uppermost pelagic-claystone interval (123—125 cm

a. 446-39-1, 120—147 cm. Complete Bouma sequence in turbidite sandstone,showing basal graded interval (133—147 cm) with pebble imbrication, theoverlying parallel-laminated interval (131—133 cm), the overlying micro-cross-laminated and convolute-laminated interval (127—131 cm), theinterbedded siltstone and claystone interval (125—127 cm), and theuppermost pelagic-claystone interval (123—125 cm). Resedimentedsandstone facies.

b. 445-36-4, 62—103 cm. Slump-faulted partial Bouma sequence in resedi-mented foraminifer-nannoplankton chalk, showing basal graded andparallel-laminated interval (96—103 cm), the overlying parallel-laminatedchalk and clayey chalk interval (81—96 cm), and the uppermost clayeynannoplankton chalk interval (62—81 cm). Resedimented carbonatefacies.

c. 445-36-4, 82—103 cm. Close-up of slump-faulted partial Bouma sequencein resedimented foraminifer-nannoplankton chalk shown in b. Basalgraded and parallel-laminated interval (96—103 cm) is overlain by parallel-laminated chalk and clayey chalk (82—96 cm). Slump faults were formedafter resedimentation of carbonate deposits. Resedimented carbonatefacies.

d. 445-71-1, 45—65 cm. Turbidite sandstone, showing part of a Boumasequence, with uppermost zone of basal graded interval (63—65 cm), theparallel-laminated interval (58—63 cm), and the convolute-laminatedand micro-cross-laminated interval (45—58 cm). Resedimented sandstonefacies.

8 8

LOCO

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8

40

Initial Reportsof the

Deep Sea Drilling Project

A Project Planned by and Carried Out With the Advice of theJOINT OCEANOGRAPHIC INSTITUTIONS FOR DEEP EARTH SAMPLING (JOIDES)

VOLUME LVIII

covering Leg 58 of the cruises of the Drilling Vessel Glomar ChallengerYokohama, Japan to Okinawa, Japan

December 1977 — January 1978

PARTICIPATING SCIENTISTS

George deVries Klein, Kazuo Kobayashi,Hervé Chamley, Doris Curtis, Henry Dick,

Dorothy Jung Echols, David M. Fountain, Hajimu Kinoshita, Nicholas G. Marsh,Atsuyuki Mizuno, Gennady V. Nisterenko, Hisatake Okada, Jon R. Sloan,

Douglas Waples, and Stan M. White

SHIPBOARD SCIENCE REPRESENTATIVE

Stan M. White

SCIENCE EDITOR

Larry N. Stout

Prepared for theNATIONAL SCIENCE FOUNDATION

National Ocean Sediment Coring ProgramUnder Contract C-482

By theUNIVERSITY OF CALIFORNIA

Scripps Institution of OceanographyPrime Contractor for the Project

This material is based upon research supported by the NationalScience Foundation under Contract No. C-482.

Any opinions, findings, and conclusions or recommendations ex-pressed in this publication are those of the author(s) and do notnecessarily reflect the views of the National Science Foundation.

It is recommended that reference to all or to part of this volume bemade in one of the following forms, as appropriate:

deVries Klein, G., Kobayashi, K., et al., 1980. Initial Reports ofthe Deep Sea Drilling Project, v. 58: Washington (U.S. Govern-ment Printing Office).

Baker, E.W., and Louda, J.W., 1980. Geochemistry of tetra-pyrrole pigments in sediments of the North Philippine Sea, DeepSea Drilling Project Leg 58. In deVries Klein, G., Kobayashi, K.,et al., Initial Reports of the Deep Sea Drilling Project, v. 58:Washington (U.S. Government Printing Office), p. 737-740.

Effective Publication Dates of DSDP Initial Reports

According to the International Code of Zoological Nomenclature, the date ofpublication of a work and of a contained name or statement affecting nomenclatureis the date on which the publication was mailed to subscribers, placed on sale, or,where the whole edition is distributed free of charge, mailed to institutions and in-dividuals to whom free copies are distributed. The mailing date is the correct date,not the printed date.

Mailing dates of the more recent Initial Reports of the Deep Sea Drilling Projectare as follows:

Volume 43 — February, 1979Volume 47 — Part 1, September, 1979Volume 47 — Part 2, November, 1979Volume 48 — August, 1979Volume 49 — March, 1979Volume 51, 52, 53 — Part 1, January, 1980Volume 51, 52, 53 — Part 2, February, 1980Supplement to Volumes 38-41 — January, 1979

Printed August 1980

Library of Congress Catalog Card Number 74—603338

For sale by the Superintendent of Documents, U.S. Government Printing OfficeWashington, D.C. 20402

IV

Foreword

For the three and one-half years between1872 and 1876, the H.M.S. CHALLENGER—after which D/V GLOMAR CHALLENGER isnamed—undertook the world's first majoroceanographic expedition. It is fitting that ourcentury should have its counterpart to thatfamous ship a century ago whose voyageshelped establish oceanography as a science. It isequally fitting that GLOMAR CHALLENGERshould be plying the same waters one centurylater seeking answers to new questions concern-ing the history of our planet and the life it sup-ports. The fundamental advancement of ourknowledge of the earth will lead to enhancedcapabilities to understand its processes and touse its natural resources intelligently.

The Deep Sea Drilling Project is beingundertaken within the context of the NationalScience Foundation^ Ocean Sediment CoringProgram. The Foundation is funding the pro-ject by means of a contract with the Universityof California, and the Scripps Institution ofOceanography is responsible for its manage-ment. The University has, in turn, subcon-tracted with Global Marine Incorporated forthe services of the drilling ship, GLOMARCHALLENGER.

Scientific planning is conducted under theauspices of the Joint Oceanographic Institu-tions for Deep Earth Sampling (JOIDES). TheJOIDES consortium has convened advisorypanels for that purpose, consisting of a largenumber of distinguished scientists from theacademic institutions, Government agencies,and private industry of many countries.Altogether, the project has involved the activeinterest and participation of many of theworld's best scientists and technologists.

The first ocean coring operations for theDeep Sea Drilling Project began on August 11,1968. During the ensuing years of drillingoperations in the Atlantic, Pacific, and IndianOceans, the Gulf of Mexico, Caribbean Sea,and Mediterranean Sea, and Antarctic waters,the scientific objectives that had been set forthwere successfully accomplished. Primarily, theage of the ocean basins and their processes ofdevelopment were determined. Emphasis wasplaced on broad reconnaissance and on testingthe involvement of the mid-oceanic rise systemsin the development of the ocean basins.

From these concepts come major inter-pretations of the results of the drilling as theybear on patterns of sedimentation and physicaland chemical characteristics of the ancientoceans.

As a result of the success of the Deep SeaDrilling Project, the National Science Founda-tion extended its contract with the Universityof California to encompass an additional 36months of drilling, allowing GLOMAR CHAL-LENGER to continue operations throughoutthe oceans of the world in exploring the deepocean floors for a period presently extendingone full decade. Scientific interest will involvemajor effort in drilling deeply into the oceaniccrustal igneous rocks to study the processes andmechanisms leading to the formation of theoceanic crust.

These reports contain the results of initialstudies of the recovered core material and theassociated geophysical information. The con-tribution to knowledge has been exceedinglylarge and future studies of the core materialover many years will contribute much more.

The importance of the work of the DeepSea Drilling Project and D/V GLOMARCHALLENGER is internationally recognized.In response to this recognition, a number of na-tions are providing partial support. EffectiveJanuary 1974, the USSR and the FederalRepublic of Germany entered into agreementswith the United States for participation andsupport. Similar arrangements were agreed toby Japan in July 1975, the United Kingdom inSeptember 1975, and France in January 1976.

All people, in their lives, activities, and in-dustry, should benefit greatly from the project—from the technological advances that arebeing made and through the information beingobtained on natural resources.

Richard C. AtkinsonDirector

Washington, D.C.October 1976

Recognizing the need in the oceanographiccommunity for scientific planning of a programto obtain deep sedimentary cores from theocean bottoms, four of the major oceanogra-phic institutions that had strong interests andprograms in the fields of marine geology andgeophysics, formed in May 1964, the JointOceanographic Institutions for Deep EarthSampling (JOIDES). This group, Lamont-Doherty Geological Observatory; RosenstielSchool of Marine and Atmospheric Science,University of Miami; the Scripps Institution of

- p _p g~tg^ Oceanography, University of California at SanA~A V3ICLO(3 Diego; and the Woods Hole Oceanographic In-

stitution, expressed an interest in undertakingscientific planning and guidance of thesedimentary drilling program. It was the pur-pose of this group to foster programs to in-vestigate the sediments and rocks beneath thedeep oceans by drilling and coring. Themembership of this original group was laterenlarged in 1968 when the University ofWashington became a member, and again in1975 when University of Hawaii Institute ofGeophysics, the Oregon State UniversitySchool of Oceanography, the University ofRhode Island Graduate School of Oceanogra-phy, and Texas A&M University Department ofOceanography became members. In accordancewith international agreements, institutionsof participating nations became members ofJOIDES. Thus, during 1974 to 1976, theBundesanstalt für Geowissenschaften undRohstoffe of the Federal Republic of Germany,the Centre National pour PExploitation desOceans of France, the National EnvironmentalResearch Council of the United Kingdom, theUniversity of Tokyo of Japan, and Academy ofSciences of the USSR became JOIDES members.

Through discussions sponsored by theJOIDES organization, with support from theNational Science Foundation, ColumbiaUniversity's Lamont-Doherty GeologicalObservatory operated a drilling program in thesummer of 1965, on the Blake Plateau regionoff Jacksonville, Florida.

Vll

With this success in hand, planning beganfor a more extensive deep sea effort. Thisresulted in the award of a contract by theNational Science Foundation to the Scripps In-stitution of Oceanography, University of Cali-fornia at San Diego for an eighteen-monthdrilling program in the Atlantic and PacificOceans, termed the Deep Sea Drilling Project(DSDP). Operations at sea began in August1968, using the now-famous drilling vessel, theGlomar Challenger.

The goal of the Deep Sea Drilling Projectis to gather scientific information that will helpdetermine the age and processes of develop-ment of the ocean basins. The primary strategyis to drill deep holes into the ocean floor, rely-ing largely on technology developed by thepetroleum industry.

Through the efforts of the principal or-ganizations and of the panel members whichwere drawn from a large cross section of lead-ing earth scientists and associates, a scientificprogram was developed.

Cores recovered from deep beneath theocean floor provide reference material for amultitude of studies in fields such as biostratig-raphy, physical stratigraphy, and Paleomag-netism, that afford a new scope for studies ofthe physical and chemical aspects of sedimentprovenance, transportation, deposition, anddiagenesis. In-hole measurements, as feasible,provide petrophysical data to permit inferenceof lithology of intervals from which no coreswere recovered.

A report, describing the core materials andinformation obtained both at sea and in lab-oratories on shore, is published after the com-pletion of each cruise. These reports are acooperative effort of the scientists participatingin the cruise and are intended primarily to be acompilation of results which, it is hoped, will bethe starting point for many future new andexciting research programs. Preliminary in-terpretations of the data and observationstaken at sea, are also included.

Core materials and data collected on eachcruise will be made available to qualifiedscientists through the Curator of the Deep Sea

Drilling Project, following a Sample Distribu-tion Policy (p. xix) approved by the NationalScience Foundation.

The advent of Glomar Challenger, with itsdeep-water drilling ability, is exceedinglytimely. It has come when geophysical investi-gation of the oceans has matured through 20 to30 years of vigorous growth to the point wherewe have some knowledge about much of theformerly unknown oceanic areas of our planet.About one million miles of traverses had beenmade which tell us much about the global pat-tern of gravity, magnetic and thermalanomalies, and about the composition, thick-ness, and stratigraphy of the sedimentary coverof the deep-sea and continental margin. Thecoverage with such data has enabled the siteselection panels to pick choice locations fordrilling. The knowledge gained from each holecan be extended into the surrounding area.Detailed geophysical surveys were made formost of the selected locations prior to drilling.

The earth sciences have recently maturedfrom an empirical status to one in which sub-stantial theories and hypotheses about majortectonic processes are flourishing. Theoriesabout the origin of magnetic fields and mag-netic reversals, about ocean floor spreadingand continental drift, and about the thermalhistory of our planet, have led to specificpredictions that could be tested best by an en-lightened program of sampling of deep-sea andcontinental margin sediments and underlyingrocks.

In October 1975, the International Phaseof Ocean Drilling (IPOD) began. This in-ternational interest, and the true participationof both the scientists and governments of anumber of nations, is elegant testimony of theimportance of the work being done by the DeepSea Drilling Project.

The members of JOIDES and DSDP andthe scientists from all interested organizationsand nations who have served on the variousadvisory panels are proud to have been ofservice and believe that the information andcore materials that have been obtained will beof value to students of earth sciences and allhumanity for many years to come.

V l l l

Deep SeaDrilling Project

MEMBER ORGANIZATIONS OF THE JOINTOCEANOGRAPHIC INSTITUTIONS FORDEEP EARTH SAMPLING (JOIDES):*

Bundesanstalt für Geowissenschaften und Rohstoffe,Federal Republic of Germany

University of California at San Diego,Scripps Institution of Oceanography

Centre National pour PExploitation des Oceans,Paris

Columbia University, Lamont-Doherty GeologicalObservatory

University of Hawaii, Hawaii Institute ofGeophysics

University of Miami, Rosenstiel School ofMarine and Atmospheric Science

Natural Environment Research Council,London

Oregon State University, School ofOceanography

University of Rhode Island, GraduateSchool of Oceanography

Texas A&M University, Department ofOceanography

University of Tokyo, Ocean ResearchInstitute

USSR Academy of Sciences

University of Washington, Departmentof Oceanography

Woods Hole Oceanographic Institution

* Includes member organizations duringtime of the cruise.

OPERATING INSTITUTION:

Scripps Institution of OceanographyUniversity of California at San DiegoLa Jolla, CaliforniaW. A. Nierenberg, Director

DEEP SEA DRILLING PROJECT

Dr. M.N.A. PetersonProject Manager andPrincipal Investigator

Mr. Frank C. MacTernanPrincipal Engineer andDeputy Project Manager

Dr. David G. MooreChief Scientist

Dr. Stan M. WhiteAssociate Chief Scientist forScience Operations

Dr. John L. UsherAssociate Chief Scientist forScience Services

Dr. William R. RiedelCurator

Mr. Stanley T. SerockiProject Development Engineer

Mr. Valdemar LarsonOperations Manager

Mr. William T. SoderstromFinance Administrator

Mr. Robert OlivasLogistics Officer

Mr. Robert S. BowerContracts Officer

Ms. Sue StrainPersonnel Officer

IX

Participants aboard.GLOMAR CHALLENGER for Leg Fifty Eight

Dr. George deVries KleinCo-Chief Scientist

Department of GeologyUniversity of IllinoisUrbana, Illinois 61801

Dr. Kazuo KobayashiCo-Chief Scientist

Ocean Research InstituteUniversity of TokyoNakano, Tokyo 164Japan

Dr. Hervé ChamleySedimentologist

Laboratoire de Géologie MarineCentre d'OcéanographieCentre Universitaire de Luminy13288 MarseilleFrance

Dr. Doris CurtisSedimentologist

Bellaire Research CenterShell Development CompanyP.O. Box 481Houston, Texas 77001

Dr. Henry DickIgneous PetrologistDepartment of Geology and Geophysics

Woods Hole Oceanographic InstitutionWoods Hole, Massachusetts 02543

Ms. Dorothy Jung EcholsPaleontologist (Foraminifers)

Department of Earth and Planetary SciencesWashington UniversitySt. Louis, Missouri 63130

Dr. David M. FountainPhysical Properties Specialist

Department of GeologyUniversity of MontanaMissoula, Montana 59812

Dr. Hajimu KinoshitaPaleomagnestist

Department of Earth SciencesFaculty of ScienceChiba UniversityYayoi-choChibaJapan

Mr. Nicholas G. MarchIgneous Petrologist and Geochemist

Department of Geological SciencesUniversity of BirminghamBirmingham B15 2TTEngland

Dr. Atsuyuki MizunoSedimentologist

Geological Survey of Japan135 Hisamoto, Takatsu-kuKawasaki 213Japan

Dr. Gennady V. NisterenkoIgneous Petrologist

Vernadsky Institute of Geochemistryand Analytical Chemistry

USSR Academy of SciencesMoscowUSSR

Dr. Hisatake OkadaPaleontologist (Nannofossils)

Department of GeologyFaculty of ScienceYamagata UniversityYamagata 990Japan

Mr. Jon R. SloanPaleontologist (Radiolarians)

Department of GeologyUniversity of CaliforniaDavis, California 95616

Dr. Douglas WaplesOrganic Geochemist

Chemistry and Geochemistry DepartmentColorado School of MinesGolden, Colorado 80401

Dr. Stan M. WhiteStaff Representative and

Shipboard Science RepresentativeDeep Sea Drilling Project, A-031Scripps Institution of OceanographyLa Jolla, California 92093

Mr. Robert KnappCruise Operations Manager

Deep Sea Drilling Project, A-031Scripps Institution of OceanographyLa Jolla, California 92093

XI

Mr. Robert ConnollyWeatherman

NOAA — National Weather Service439 West York StreetNorfolk, Virginia 23510

Captain Loyd DillCaptain of the Drilling Vessel

Global Marine, Inc.Los Angeles, California 90017

Mr. Cotten GuessDrilling Superintendent

Global Marine, Inc.Los Angeles, California 90017

Mr. Ted GustafsonLaboratory Officer


Mr. James PineChemist


Mr. William MillsCuratorial Representative

Deep Sea Drilling Project, A-031Scripps Institute of OceanographyLa Jolla, California 92093

Mr. Dennis GrahamMarine Technician


Mr. Craig HallmanMarine Technnician


Mr. Richard MyersMarine Technician


Mr. Phillip StottsMarine Technician


Mr. Robert ByrneElectronics Technician


Mr. Paul LaughlinElectronics Technician


Mr. Victor SoteloPhotographer


Ms. Louise HenryYeoperson


Deep Sea Drilling Project Publications Staff

Publications ManagerMarianna Lee

Science EditorsSusan OrlofskyRobert PowellJames ShambachLarry N. Stout

Production ManagerRaymond F. Silk

Production AssistantsElaine M. BruerMadeleine A. Mahnken

Production CoordinatorsMary A. YoungJanice E. Bowman

Art SupervisorVirginia L. Roman

IllustratorsMyrtali AnagnostopoulosTommy F. Hilliard (this volume)Elizabeth R. PetersKathleen SandersonAlice N. Thompson

xn

JOIDES AdvisoryGroups

Executive CommitteeDr. Maurice Rattray, Jr.

University of Washington

Professor Dr. F. Bender

Bundesanstalt für Geowissenschaften und Rohstoffe

Dr. John V. ByrneOregon State University

Dr. William W. HayRosenstiel School of Marine and Atmospheric Science

Dr. Charles E. Helsley

Hawaii Institute of Geophysics

Sir Peter Kent, F.R.S.

Natural Environment Research Council

Dr. John A Knauss

University of Rhode Island

Monsieur Yves La Prairie

CNEXO

Dr. Ryuzo Marumo

University of Tokyo

Dr. William A. Nierenberg

Scripps Institution of Oceanography

Dr. Worth D. Nowlin, Jr.

Texas A&M University

Dr. M.N.A. Peterson (ex-officio)


Academician A. V. Sidorenko

Academy of Sciences of the USSR

Dr. John Steele


Dr. Manik TalwaniLamont-Doherty Geological Observatory

Planning CommitteeDr. Joe S. Creager


Dr. Helmut BeiersdorfBundesanstalt für Geowissenschaften und Rohstoffe

Dr. William R. Bryant


Dr. C.G.A. Harrison

Rosenstiel School of Marine and Atmospheric Science

Dr. Dennis E. Hayes

Lamont-Doherty Geological Observatory

Dr. James R. HeirtzlerWoods Hole Oceanographic Institution

Dr. James P. KennettUniversity of Rhode Island

Dr. LaVern D. Kulm

Oregon State University

Dr. Anthony S. Laughton

Institute of Oceanographic Sciences

Dr. Xavier LePichon

CNEXO

Dr. Ralph Moberly


Dr. David G. Moore (ex-officio)Scripps Institution of Oceanography

Dr. Noriyuki NasuUniversity of Tokyo

Dr. William Riedel (ex-officio)


Dr. Gleb UdintsevAcademy of Sciences of the USSR

Dr. E. L. WintererScripps Institution of Oceanography

Advisory Panel on Sedimentary Petrologyand Physical Properties

Dr. A. RichardsLehigh University

Dr. R. BennettNOAA

Mr. R. E. Boyce (ex-officio)


Dr. William R. Bryant (ex-officio)Texas A&M University

Dr. S. E. CalvertInstitute of Oceanographic Sciences

Dr. C. J. ClausenNorges Geotekniske Institutt

Dr. J. ConollyEra North America Inc.

Dr. G. R. HeathUniversity of Rhode Island

Dr. A. P. LisitzinAcademy of Sciences of the USSR

Dr. Frederic MéliéresUniversite Pierre et Marie Curie

Dr. G. MlillerLaboratorium für Sedimentforschung, Heidelberg

xin

Advisory Panel on Organic GeochemistryDr. Keith Kvenvolden

U.S. Geological Survey

Dr. Earl W. BakerNortheast Louisiana University

Dr. Ellis E. Bray

Mobil Oil Company, Inc.

Dr. Geoffrey Eglinton

University of Bristol

Dr. J. Gordon Erdman

Phillips Petroleum Company

Dr. Eric M. Galimov


Dr. John M. Hunt


Dr. Richard D. Mclver

£"550 Production Research Laboratory

Professor Vladimir Scherbina


Dr. Erwin Suess


Dr. B. Tissot

Institut Francois du Pétrole

Dr. Dietrich WelteLehrstuhl für Geologie, Geochemie, und Lagerstattendes Erdöls und der Kohle

Mr. Oscar Weser (ex-officio)


Dr. E. L. Winterer (ex-officio)Scripps Institution of Oceanography

Advisory Panel on Information HandlingDr. M. A. Rosenfeld

Woods Hole Oceanographic InstitutionDr. D. W. Appleman

Smithsonian InstitutionMr. J. G. Barr

Standard Oil Company of CaliforniaDr. Joe S. Creager (ex-officio)

University of WashingtonDr. H. Glashoff

Bundesanstalt für Geowissenschaften und RohstoffeDr. J. C. Kelley

San Francisco State CollegeDr. A. Loeblich, Jr.

University of California, Los AngelesProfessor L. Sitnikov


Dr. J. Usher (ex-officio)Scripps Institution of Oceanography

Advisory Panel on Pollution Preventionand SafetyDr. Louis E. Garrison


Dr. George Claypool


Dr. Joe S. Creager (ex-officio)


Dr. Joseph R. CurrayScripps Institution of Oceanography

Dr. H. Grant GoodellUniversity of Virginia

Dr. Arthur E. GreenExxon Production Research Laboratory

Dr. Brian T. R. Lewis (ex-officio)University of Washington

Dr. A. Mayer-Gurr

Waldheimstrasse 25, Hannover

Dr. Maurice Rattray, Jr. (ex-officio)University of Washington

Dr. Seiya UyedaUniversity of Tokyo

Mr. Oscar E. WeserScripps Institution of Oceanography

Advisory Panel on Inorganic Geochemistry

Dr. Joris M. GieskesScripps Institution of Oceanography

Dr. Wallace S. BroeckerLamont-Doherty Geological Observatory

Dr. D. S. CronanRoyal School of Mines, London

Mr. John I. Ewing (ex-officio)Woods Hole Oceanographic Institution

Dr. Heinrich D. Holland

Harvard University

Dr. Ian R. Kaplan

University of California, Los Angeles

Dr. Frank T. Manheim


Dr. Erwin SuessOregon State University

Dr. K. K. TurekianYale University

Dr. I. M. Varentsov


Dr. K. H. WedepohlGeochemisches Institut der Universitat, Gottingen

xiv

Industrial Liaison PanelMr. W. A. Roberts

Phillips Petroleum Company

Mr. R. L. Adams

Continental Oil Company

Professor Vsevolod V. Fedynskiy

Ministry of Geology of the USSR

Mr. Melvin J. Hill

Gulf Oil Corporation

Dr. Ing. Guenter Peterson

Deutsche Schachtbau und Tiefl>orhrgesellschaft mbH

Monsieur Gilbert Rutman

Societe Nationale des Pet roles d'Aquitaine

Mr. G. WilliamsUK Offshore Operators Association, ltd.

Advisory Panel on Ocean CrustDr. J. R. Cann

University of East Anglia

Dr. J. L. Bischoff


Dr. Leonid V. Dmitriev


Dr. Paul J. Fox

State University of New York at Albany

Dr. Jean Francheteau

CNEXODr. J. M. Hall

Dal ho us ie University

Dr. C. G. A. Harrison (ex-officio)

Rosenstiel School of Marine and Atmospheric Sciences

Dr. James R. Heirtzler (ex-officio)Woods Hole Oceanographic Institution

Dr. E. D. Jackson*U.S. Geological Survey

Dr. Roger L. LarsonLamont-Doherty Geological Observatory

Dr. James H. Natland (ex-officio)


Dr. John Orcutt


Dr. M, Ozima

University of Tokyo

Dr. H. U. Schmincke

Ruhr-Universitat, Bochum

Dr. M. TreuilInstitut Physique du Globe

* Deceased

Advisory Panel on Ocean Margin (Active)

Dr. Seiya UyedaUniversity of Tokyo

Dr. Michael Audley-Charles

Royal School of Mines, London

Dr. Rene Blanchet

Universilé de Bretagne Occident ale

Dr. Creighton Burk

University of Texas, Austin

Dr. Joe S. Creager (ex-officio)


Dr. Daniel Karig

Cornell University

Dr. Kazuo Kobayashi

University of Tokyo

Dr. I. P. Kosminskaya


Dr. Loren W. Kroenke


Dr. LaVern D. Kulm (ex-officio)


Dr. Keith Kvenvolden (ex-officio)


Dr. William J. Ludwig


Dr. David G. Moore (ex-officio)


Dr. James H. Natland


Dr. Gordon Packham

University of Sydney

Dr. Roland von Huene

U. S. Geological Survey

Dr. H. W. WaltherBundesanstalt für Geowissenschaften und RohstoffeAdvisory Panel on Ocean Margin (Passive)

Dr. Joseph A. CurrayScripps Institution of Oceanography

Dr. E. V. ArtyushkovInstitute of Physics of the Earth

Dr. A. W. Bally

Shell Oil Company

Dr. Helmut Beiersdorf (ex-officio)Bundesanstalt fiir Geowissenschaften und Rohstoffe

Professor Dr. D. BernoulliGeologisch-Palaontologisches Institut, Basel

Mr. John I. Ewing (ex-officio)Woods Hole Oceanographic Institution

Dr. K. HinzBundesanstalt fiir Geowissenschaften und Rohstoffe

xv

Dr. John M. Hunt (ex-officio)Woods Hole Oceanographic Institution

Dr. H. Kagami

University of Tokyo

Dr. L. Montadert

Institut Français du Pétrole

Dr. David G. Moore (ex-officio)


Dr. D. G. Roberts

Institute of Oceanographic Sciences

Professor Dr. E. Seibold

Universitat Kiel

Dr. Robert E. Sheridan

University of Delaware

Dr. J. Thiede

Universitetett Oslo

Dr. Artem D. YunovInstitute of Marine Geology, Riga

Advisory Panel on Ocean PaleoenvironmentDr. Yves Lancelot

CNEXODr. Wolfgang Berger


Dr. P. L. Bezrukov


Dr. Geoffrey Eglinton (ex-officio)

University of Bristol

Professor B. M. Funnell

University of East Anglia

Dr. Kenneth Hsu

Eidg. Technische Hochschule, Zurich

Dr. James C. Ingle

Stanford University

Dr. J. Kennett (ex-officio)


Dr. V. Krasheninnikov


Dr. T. C. Moore, Jr.


Dr. Michael Sarnthein

Universitat Kiel

Dr. N. Shackleton

University of Cambridge

Mr. W. V. Sliter


Dr. Y. Takayanagi

Tohoku University

Dr. H. Thierstein


Dr. J. Usher (ex-officio)Scripps Institution of Oceanography

Dr. E. L. Winterer (ex-officio)Scripps Institution of Oceanography

Advisory Panel on Site Surveying

Dr. Brian T. R. LewisUniversity of Washington

Dr. William R. Bryant (ex-officio)


Dr. Elizabeth T. Bunce


Dr. LeRoy M. Dorman


Dr. Edgar S. Driver

Golf Science and Technology Company

Dr. Davis A. FahlquistTexas A&M University

Dr. Dennis E. HayesLamont-Doherty Geological Observatory

Dr. K. HinzBundesanstalt fiir Geowissenschaften und Rohstoffe

Dr. Donald M. HussongHawaii Institute of Geophysics

Dr. L. KoganSouthern Branch of the Institute of Oceanology, USSR

Dr. I. P. KosminskayaAcademy of Sciences of the USSR

Dr. Marcus G. Langseth (ex-officio)


Dr. Ralph Moberly (ex-officio)


Dr. Shozaburo Nagumo

University of Tokyo

Dr. Vince Renard

Centre Oceánologique de Bretagne

Dr. Roland SchlichObservatoire Géophysique du Pare St.-Maw

Dr. G. StoberDeminex, Dusseldorf

Dr. Roland von HueneU.S. Geological Survey

Dr. Joel WatkinsUniversity of Texas, Austin

Dr. S. White (ex-officio)Scripps Institution of Oceanography

Stratigraphic Correlations PanelDr. R. H. Benson

Smithsonian Institution

Dr. W. A. BerggrenWoods Hole Oceanographic Institution

xvi

Professor Dr. H. M. BolliEidg. Technische Hochschule, Zurich

Dr. D. Bukry


Dr. P. Cepek

Bundesanstalt für Geowissenschaften und Rohstoffe

Dr. R. G. Douglas

University of Southern California

Dr. Stefan Gartner


Dr. S. R. Hammond


Dr. C. Helsley (ex-officio)


Dr. N. Hughes

Sedgwick Museum, Cambridge

Dr. M. Petrushevskaya


Dr. W. R. Riedel


Dr. T. Saito


Dr. J. B. Saunders

Naturhistorisches Museum, Basel

Dr. N. F. Sohl


Dr. J. L. Usher (ex-officio)Scripps Institution of Oceanography

Downhole Measurements PanelDr. R. Hyndman

Victoria Geophysical Observatory

Dr. Heinz Beckmann

Technische Universitat Clausthal

Dr. N. Christensen


Dr. James R. Heirtzler (ex-officio)Woods Hole Oceanographic Institution

Dr. A. H. JagelerAmoco Production Research Company

Dr. R. James Kirkpatrick (ex-officio)Scripps Institution of Oceanography

Dr. Y. Neprochnov


Dr. A. Richards

Lehigh University

Dr. O. SerraELF-ERAP

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Deep Sea Drilling ProjectSAMPLE DISTRIBUTION POLICY

Distribution of Deep Sea Drilling samples for investi-gation will be undertaken in order to (1) providesupplementary data to support GLOMAR CHAL-LENGER scientists in achieving the scientific objec-tives of their particular cruise, and in addition toserve as a mechanism for contributions to the InitialReports; (2) provide individual investigators withmaterials that are stored with samples for referenceand comparison purposes.

The National Science Foundation has established aSample Distribution Panel to advise on the distribu-tion of core materials. This panel is chosen in accor-dance with usual Foundation practices, in a mannerthat will assure advice in the various disciplines lead-ing to a complete and adequate study of the cores andtheir contents. Funding for the proposed researchmust be secured separately by the investigator. Itcannot be provided through the Deep Sea DrillingProject.

The Deep Sea Drilling Projecfs Curator is respon-sible for distributing the samples and controllingtheir quality, as well as preserving and conservingcore material. He also is responsible for maintaininga record of all samples that have been distributed,shipboard and subsequent, indicating the recipient,and the nature of the proposed investigation. Thisinformation is made available to all investigators ofDSDP materials as well as other interested research-ers on request.

The distribution of samples is made directly from oneof the two existing repositories, Lamont-DohertyGeological Observatory and Scripps Institution ofOceanography, by the Curator or his designatedrepresentative.

1. Distribution of Samples for Research Leading toContributions to Initial Reports

Any investigator who wishes to contribute a paper toa given volume of the Initial Reports may write tothe Chief Scientist, Deep Sea Drilling Project (A-031)Scripps Institution of Oceanography, University ofCalifornia at San Diego, La Jolla, California 92093,U.S.A., requesting samples from a forthcomingcruise. Requests for a specific cruise should be re-ceived by the Chief Scientists two months in advanceof the departure of the cruise in order to allow timefor the review and consideration of all requests andto establish a suitable shipboard sampling program.The request should include a statement of the nature

of the study proposed, size and approximate numberof samples required to complete the study, and anyparticular sampling technique or equipment thatmight be required. The requests will be reviewed bythe Chief Scientist of the Project and the cruiseco-chief scientists; approval will be given in accor-dance with the scientific requirements of the cruiseas determined by the appropriate JODIES AdvisoryPanel(s). If approved, the requested samples willbe taken, either by the shipboard party if the work-load permits, or by the curatorial staff shortlyfollowing the return of the cores to the repository.Proposals must be of a scope to ensure that samplescan be processed and a contribution completed intime for publication in the Initial Reports. Exceptfor rare, specific instances involving ephermeralproperties, sampling will not exceed one-quarter ofthe volume of core recovered, with no interval beingdepleted and one-half of all core being retained asan archive. Shipboard sampling shall not exceedapproximately 100 igneous samples per investigator;in all cases co-chief scientists are requested to keepsampling to a minimum.

The co-chief scientists may elect to have specialstudies of selected core samples made by other inves-tigators. In this event the names of these investigatorsand complete listings of all materials loaned or distri-buted must be forwarded, if possible, prior to thecruise or, as soon as possible following the cruise, tothe Chief Scientist through the DSDP Staff ScienceRepresentative for that particular cruise. In suchcases, all requirements of the Sample DistributionPolicy shall also apply.

If a dispute arises or if a decision cannot be reachedin the manner prescribed, the NSF Sample Distribu-tion Panel will conduct the final arbitration.

Any publication of results other than in the InitialReports within twelve (12) months of the completionof the cruise must be approved and authored by thewhole shipboard party and, where appropriate,shore-based investigators. After twelve months, in-dividual investigators may submit related papers foropen publication provided they have submitted theircontributions to the Initial Reports. Investigationsnot completed in time for inclusion in the InitialReports for a specific cruise may not be published inother journals until final publication of that InitialReport for which it was intended. Notice of sub-mission to other journals and a copy of the articleshould be sent to the DSDP Chief Science Editor.

* Revised October 1976

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2. Distribution of Samples for Research leading toPublication other than in Initial Reports

A. Researchers intending to request samples forstudies beyond the scope of the Initial Reportsshould first obtain sample request forms fromthe Curator, Deep Sea Drilling Project(A-031), Scripps Institution of Oceanogra-phy, University of California at San Diego,La Jolla, California 92093, U.S.A. On theforms the researcher is requested to specifythe quantities and intervals of the corerequired, make a clear statement of the pro-posed research, state time required to com-plete and submit results for publication,specify the status of funding and the availa-bility of equipment and space foreseen forthe research.

In order to ensure that all requests for highlydesirable but limited samples can be con-sidered, approval of requests and distributionof samples will not be made prior to 2 monthsafter publication of the Initial Core Descrip-tions (LCD.). ICD's are required to be pub-lished within 10 months following each cruise.The only exceptions to this policy will be forspecific instances involving ephemeral proper-ties. Requests for samples can be based on theInitial Core Descriptions, copies of which areon file at various institutions throughout theworld. Copies of original core logs and dataare kept on open file at DSDP and at theRepository at Lamont-Doherty GeologicalObservatory, Palisades, New York. Requestsfor samples from researchers in industriallaboratories will be handled in the samemanner as those from academic organiza-tions, with the same obligation to publishresults promptly.

B. (1) The DSDP Curator is authorized to dis-tribute samples to 50ml per meter of core.Requests for volumes of material in excess ofthis amount will be referred to the NSFSample Distribution Panel for review andapproval. Experience has shown that most in-vestigations can be accomplished with 10mlsized samples or less. All investigators areencouraged to be as judicious as possible withregard to sample size and, especially, fre-quency within any given core interval. TheCurator will not automatically distribute anyparts of the cores which appear to be in parti-cularly high demand; requests for such partswill be referred to the Sample DistributionPanel for review. Requests for samples from

thin layers or important stratigraphic bound-aries will also require Panel review.

(2) If investigators wish to study certainproperties which may deteriorate prior to thenormal availability of the samples, they mayrequest that the normal waiting period notapply. All such requests must be reviewed bythe curators and approved by the NSF SampleDistribution Panel.

C. Samples will not be provided prior to assur-ance that funding for sample studies eitherexists or is not needed. However, neitherformal approval of sample requests nor distri-bution of samples will be made until theappropriate time (Item A). If a sample requestis dependent, either wholly or in part, onproposed funding, the Curator is prepared toprovide to the organization to whom the fund-ing proposal has been submitted any informa-tion on the availability (or potential availabil-ity) of samples that it may request.

D. Investigators receiving samples are respon-sible for:

(1) publishing significant results; howevercontributions shall not be submitted for pub-lication prior to 12 months following the ter-mination of the appropriate leg;

(2) acknowledging, in publications, thatsamples were supplied through the assistanceof the U.S. National Science Foundation andothers as appropriate;

(3) submitting five (5) copies (for distributionto the Curator's file, the DSDP Repositories,the GLOMAR CHALLENGERS Library,and the National Science Foundation) of allreprints of published results to the Curator,Deep Sea Drilling Project (A-031), ScrippsInstitution of Oceanography, University ofCalifornia at San Diego, La Jolla, California92093, U.S.A.;

(4) returning, in good condition, the remain-ders of samples after termination of research,if requested by the Curator.

E. Cores are made available at repositories forinvestigators to examine and to specify exactsamples in such instances as may be necessaryfor the scientific purposes of the sampling,subject to the limitations of B (1 and 2) and D,above, with specific permission of the Curatoror his delegate.

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F. Shipboard-produced smear slides of sedi-ments and thin sections of indurated sedi-ments, igneous and metamorphic rocks, willbe returned to the appropriate repository atthe end of each cruise or at the publicationof the Initial Reports for that cruise. Thesesmear slides and thin sections will form areference collection of the cores stored ateach repository and may be viewed at therespective repositories as an aid in the selec-tion of core samples.

3. Reference Centers

As a separate and special category, samples will bedistributed for the purpose of establishing up to fivereference centers where paleontologic materials willbe available for reference and comparison purposes.The first of these reference centers has been approvedat Basel, Switzerland.

Data Distribution Policy

Data gathered on board D/V Glomar Challengerand in DSDP shore laboratories are available to allresearchers 12 months after the completion of eachcruise. The files are part of a coordinated computerdatabase, fully searchable and coordinated to otherfiles. Data sets representing a variety of geologicenvironments can be arranged for researchers whomay wish to manipulate the database directly.

Most data requests are filled free of charge, exceptif they are unusually large or complex and directcosts exceed $50.

When data are used for publication, the NationalScience Foundation must be acknowledged andDSDP provided with five reprints for inclusion inthe DSDP index of publications and investigations.Requests for data should be submitted to:

Data Manager, Deep Sea Drilling ProjectScripps Institution of Oceanography (A-031)University of California, San DiegoLa Jolla, California 92093

Telephone: (714) 452-3526Cable Address: SIOCEAN

I. The database includes files generally availableboth in digital form on magnetic tape and asmicrofilm copies of the original observationforms.

A. Geophysical data include underway bathy-metry, magnetics, and sub-bottom profiles;bathymetry data exist both as 12-kHz and3.5-kHz records. Underway data are proc-cessed by DSDP and the Geological DataCenter at Scripps Institution of Oceanography(SIO). Seismic records are available in micro-film and photographic prints.

B. Physical property data obtained on boardGlomar Challenger include:

Analytical water content, porosity, anddensity

Density and porosity by Gamma Ray At-tenuation Porosity Evaluator (GRAPE)

Acoustic velocity by Hamilton FrameMethod

Thermal conductivityHeat flow (in situ)Natural gamma radiation (discontinued

after Leg 19)Well logs

C. Sediment data obtained on board ship andfrom core samples in DSDP shore labora-tories include:

Core photographsVisual core descriptionsSmear slide descriptionsX-ray diffractionX-ray fluorescenceTotal carbon, organic carbon, and carbon-

ate determinationsGrain-size determinations (sand, silt, clay)Interstitial water chemistryGas chromatography

D. Igneous rock data include:Core photographsVisual core descriptionsRock chemistryPaleomagneticsThin-section descriptions

E. Paleontologic data include fossil names,abundance, preservation, and age of sampleand are available, for selected sites, for Ter-

tiary and Mesozoic taxa. Range charts can begenerated from the database, using the lineprinter. A glossary of fossil names is availableon microfiche or magnetic tape.

F. Ancillary files include:Site positionsSub-bottom depths of coresMaster Guide File (a searchable core data

summary file)

II. Additional publications, aids to research, areperiodically updated and distributed to libraries.Single copies, at no charge, are distributed onmicrofiche at 48X magnification, except for theData Datas (see below), which are at 24X. Theyinclude:

A. Guides to DSDP Core Materials, a series ofprinted summaries containing maxima, min-ima, and typical values for selected obser-vations. Guides are available for each of themajor ocean basins and for Phases I, II, andIII of the drilling program. The source datasummary file is also available.

B. Index to Initial Reports and SubsequentPublications and Investigations is a compre-hensive key word index to chapters of theInitial Reports, and to papers and investiga-tions in progress which cite DSDP samples or

data. The Index and its annotated biblio-graphy serve to inform researchers of otherinvestigators working on similar projects.Each paper is assigned key words for field ofstudy, material, geographic area, and geo-logic age. A complete citation, including theassigned key words, is printed in the biblio-graphy. Key words are permuted to form acomprehensive cross-index to the authorreference list.

C. Data Data, a series of informal memorandaproviding a quick reference to accessible data,is available on microfiche. Also available is asite position map to assist researchers in large-area studies. (Site positions are plotted on abathymetry map compiled by the SIOGeologic Data Center.)

D. Data Retrieval and Application ComputerPrograms to perform data management andretrieval functions and a set of programsdesigned to provide special graphic displaysof data are available; they may be of limiteduse because of differences in computer hard-ware. All current programs are written inALGOL for a Burroughs 7800 computer sys-tem. Software inquiries may be addressed tothe Data Manager.

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CONTENTS

Chapter

PART I: INTRODUCTION

Page

1

Chapter Page

1. INTRODUCTION AND EXPLANATORYNOTES, DEEP SEA DRILLING PROJECTLEG 58 3George deVries Klein, Kazuo Kobayashi, andStan M. White

PART II: SITE REPORTS 19

2. SITE 442, SHIKOKU BASIN, DEEP SEADRILLING PROJECT LEG 58 21The Shipboard Scientific Party



5. SITE 445, DAITO RIDGE, DEEP SEADRILLING PROJECT LEG 58 283The Shipboard Scientific Party

6. SITE 446, DAITO BASIN, DEEP SEADRILLING PROJECT LEG 58 401The Shipboard Scientific Party

PART III: BIOSTRATIGRAPHY 547

7. CALCAREOUS NANNOFOSSILS FROMDEEP SEA DRILLING PROJECT SITES442 THROUGH 446, PHILIPPINE SEA 549Hisatake Okada

11. TRACE FOSSILS IN DEEP SEA DRILLINGPROJECT LEG 58 CORES 601A. A. Ekdale

PART IV: SEDIMENTOLOGY 607

12.

13.

14.

15.

16.

17.

FORAMINIFER BIOSTRATIGRAPHY,NORTH PHILIPPINE SEA, DEEP SEADRILLING PROJECT LEG 58Dorothy J. Echols

56718.

9. RADIOLARIANS FROM SEDIMENTS OFTHE PHILIPPINE SEA, DEEP SEA DRILL-ING PROJECT LEG 58 587Jon Sloan

10. PALYNOLOGICAL STUDY OFPALEOGENE SEDIMENTS FROM DEEPSEA DRILLING PROJECT SITES 445 AND446, PHILIPPINE SEA 597Shigemoto Tokunaga

19.

PETROLOGY AND DIAGENESIS OFSANDSTONES, DEEP SEA DRILLINGPROJECT SITE 445, DAITO RIDGE 609George deVries Klein, Richard L. McConville,Janet M. Harris, and C. K. Steffensen

PETROGRAPHIC AND GEOCHEMICALPROPERTIES OF TEPHRAS IN DEEP SEADRILLING PROJECT CORES FROM THENORTH PHILIPPINE SEA 617Toshio Furuta and Fusao Arai

CONGLOMERATE AND SANDSTONEPETROGRAPHY, DEEP SEA DRILLINGPROJECT SITE 445, PHILIPPINE SEA . . .Hidekazu Tokuyama, Makoto Yuasa, andAtsuyuki Mizuno

629

ANALYSIS OF CONGLOMERATES ANDASSOCIATED SEDIMENTARY ROCKS OFTHE DAITO RIDGE, DEEP SEA DRILLINGPROJECT SITE 445 643William Mills

IGNEOUS ROCKS FROM THE CON-GLOMERATES OF DEEP SEA DRILLINGPROJECT HOLE 445 659G. V. Nisterenko

HEAVY-MINERAL COMPOSITION OFTERTIARY SEDIMENTS AT DEEP SEADRILLING PROJECT SITES 445 AND 446,NORTHEASTERN PHILIPPINE SEA 661Yoshiaki Sato

CLAY SEDIMENTATION AND PALEOEN-VIRONMENT IN THE SHIKOKU BASINSINCE THE MIDDLE MIOCENE (DEEPSEA DRILLING PROJECT LEG 58, NORTHPHILIPPINE SEA) 669Hervé Chamley

CLAY SEDIMENTATION AND PALEOEN-VIRONMENT IN THE AREA OF DAITORIDGE (NORTHWESTERN PHILIPPINESEA) SINCE THE EARLY EOCENE 683Hervé Chamley

xxiii

Chapter Page Chapter Page

20. RHODOCHROSITE REPLACEMENT OFINTERNAL MOLDS OF FORAMINIFERS(?) 695D. J. Echols, L. Ross, and E. Ringer, Jr.

21. LITHOFACIES OF THE SHIKOKU ANDPARECE VELA BASINS 701Doris M. Curtis and Dorothy J. Echols

22. GRAIN-SIZE AND CARBON-CARBONATEANALYSES, LEG 58 711Stan M. White

PARTV: GEOCHEMISTRY OF SEDIMENTS . . 717

23. MAJOR-ELEMENT CHEMISTRY OFARGILLACEOUS SEDIMENTS AT DEEPSEA DRILLING PROJECT SITES 442, 443,AND 444, SHIKOKU BASIN 719Ryuichi Sugisaki

24. GEOCHEMISTRY OF TETRAPYRROLEPIGMENTS IN SEDIMENTS OF THENORTH PHILIPPINE SEA, DEEP SEADRILLING PROJECT LEG 58Earl W. Baker and J. William Louda

29.

30.

31.

DETAILS OF MAGNETIC-POLARITYTRANSITIONS RECORDED IN SEDIMENTCORES FROM DEEP SEA DRILLINGPROJECT SITE 445, PHILIPPINE SEA 769Hajimu Kinoshita

PALEOMAGNETISM OF A PISTON CORECOLLECTED IN THE DAITO BASIN NEARDEEP SEA DRILLING PROJECT SITE 446 . 777Shoji Tonouchi and Kazuo Kobayashi

MAGNETIC LINEATIONS IN THESHIKOKU BASINTai-chang Shih

783

PART VII: GEOCHEMISTRY ANDPETROLOGY OF BASALTS

32.

25. AGE OF BASALT INTRUSIONESTIMATED BY ORGANICGEOCHEMISTRYDouglas W. Waples

737

741

33.

26. CARBON AND NITROGEN PROFILES INDEEP-SEA SEDIMENTS: NEW EVIDENCEFOR BACTERIAL DIAGENESIS AT GREATDEPTHS OF BURIAL 745Douglas W. Waples and Jon R. Sloan

27. ORGANIC PETROGRAPHY AND EX-TRACTABLE HYDROCARBONS OFSEDIMENTS FROM THE NORTHERNPHILIPPINE SEA, DEEP SEA DRILLINGPROJECT LEG 58 755Jurgen Rullkötter, Pierre Flekken, and DietrichH. Welte

PART VI: MAGNETISM OF SEDIMENTS 763

28. PALEOMAGNETISM OF SEDIMENTCORES FROM DEEP SEA DRILLINGPROJECT LEG 58, PHILIPPINE SEA 765Hajimu Kinoshita

34.

35.

36.

PETROCHEMISTRY ANDGEOCHEMISTRY OF BASALTS IN THESHIKOKU BASIN AND DAITO BASIN,PHILIPPINE SEAG. V. Nisterenko

789

791

GEOCHEMISTRY OF BASALTS FROMTHE SHIKOKU AND DAITO BASINS,DEEP SEA DRILLING PROJECT LEG 58 . . . 805Nicholas G. Marsh, Andrew D. Saunders, JohnTarney, and Henry J. B. Dick

DEEP SEA DRILLING PROJECT LEG 58ABYSSAL BASALTS FROM THE SHIKOKUBASIN: THEIR PETROLOGY AND MAJOR-ELEMENT GEOGHEMISTRY 843Henry J. B. Dick, Nicholas G. Marsh, andThomas D. Bullen

MAJOR- AND TRACE-ELEMENT VARIA-TIONS IN BASALTS FROM THE NORTHPHILIPPINE SEA DRILLED DURINGDEEP SEA DRILLING PROJECT LEG 58:A COMPARATIVE STUDY OF BACK-ARC-BASIN BASALTS WITH LAVA SERIESFROM JAPAN AND MID-OCEAN RIDGES .D. A. Wood, J.-L. Joron, N. G. Marsh,J. Tarney, and M. Treuil

873

VESICULARITY OF SHIKOKU BASINBASALT: A POSSIBLE CORRELATIONWITH THE ANOMALOUS DEPTH OFBACK-ARC BASINSHenry J. B. Dick

895

Chapter Page Chapter Page

37. STABLE-ISOTOPE EVIDENCE FOR THEORIGIN OF SECONDARY CARBONATEVEINS IN DEEP SEA DRILLING PROJECTLEG 58 BASALTS 905Thomas F. Anderson

38. TEMPERATURE OF FORMATION ANDISOTOPIC COMPOSITION OF CARBONAND OXYGEN OF CARBONATE VEINS INBASALTS, DEEP SEA DRILLINGPROJECT SITES 443 AND 446 913G. V. Nisterenko, L. A. Bannikova, L. S.Medvedeva, and V. B. Naumov

PART VIII: PHYSICAL PROPERTIES ANDAGES OF BASALTS 915

39 Ar_ Ar GEOCHRONOLOGICALSTUDIES ON ROCKS OF DEEP SEA DRILL-ING PROJECT SITES 443, 445, AND 446 . . . . 917M. Ozima, Y. Takigami, and I. Kaneoka

40. K-Ar AGES OF BASALT SILLS FROM DEEPSEA DRILLING PROJECT SITES 444 AND446, SHIKOKU BASIN AND DAITO BASIN,PHILIPPINE SEA 921Edwin H. McKee and Paul R. Klock

41. MAGNETIC PROPERTIES OF IGNEOUSROCKS OF THE PHILIPPINE SEA, DEEPSEA DRILLING PROJECT LEG 58 923T. Furuta, K. Kobayashi, and K. Momose

42. INFLUENCE OF POROSITY AND WATERSATURATION ON THECOMPRESSIONAL-WAVE VELOCITIESOF BASALTS FROM THE NORTH PHILIP-PINE SEA 935David M. Fountain

PART IX: UNDERWAY GEOPHYSICS 941

43. UNDERWAY GEOPHYSICAL DATA,DEEP SEA DRILLING PROJECT LEG 58,FROM YOKOHAMA, JAPAN, TO NAHA,OKINAWA, IN THE NORTH PHILIPPINESEA 943Kazuo Kobayashi

PART X: SUMMARY 949

44. GEOLOGICAL SUMMARY OF THENORTH PHILIPPINE SEA, BASED ONDEEP SEA DRILLING PROJECT LEG 58RESULTS 951George deVries Klein and Kazuo Kobayashi

45. SEDIMENT SYNTHESIS: DEEP SEADRILLING PROJECT LEG 58, PHILIPPINESEA 963Stan M. White, Hervé Chamley, Doris Curtis,George deVries Klein, and Atsuyuki Mizuno,with a special contribution on physical proper-ties by David M. Fountain

INDEX 1015

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