446 OLR (1983)30(6)

good. Univ. of Rhode Island, Kingston, RI 02881, USA.

C240. Corrosion

83:3289 Kristoffersen, Anne, Gunnar Rolla, Torleif Sonju

and Erik Jantzen, 1982. The organic film devel- oped on metal surlaces exposed to seawater:

chemical studies. J. Colloid Interface Sci., 90( 1): 191-196.

Because the organic film adsorbed onto submerged metal surfaces constitutes a substrate for marine organisms, understanding the biofouling process depends upon understanding film chemistry. Anal- ysis of films formed on Fe, AI, and Cu during 2 hours' immersion in seawater disclosed similar constituents for all films, including 15 different amino acids, two monosaccharides, and several fatty acids. Norwegian Council of Sci. and Tech., Oslo, Norway. (dlf)

D. SUBMARINE GEOLOGY AND GEOPHYSICS

D10. Apparatus and methods

83:3290 Shaub, Yu.B., 1981/82. Mapping the upper layer of

the ocean floor from specific conductance. Phys. solid Earth (a translation of Fiz. Zemli), 17(11): 896-901.

A simplified electrical exploration method is de- tailed. A 'single multi-electrode sensing element' may be deployed from either a light boat or a self-contained unit. The mathematics for reducing the data, assuming a 2-layer floor, are developed. Possible applications are discussed. Acad. of Sci., Pacific Oceanol. Inst. DVNTs, Moscow, USSR. (bas)

83:3291 Tanaka, T. and A. Masuda, 1982. The La-Ce

geochronometer: a new dating method. Nature, Lond., 300(5892):515-518.

Using La-Ce dating, an internal La-Ce isochron of a gabbro from the upper zone of the Bushveld, South Africa, yields an age of 2390 + 480 m.y. agreeing with the Sm-Nd isochron age (2050___ 90 m.y.) obtained from the same sample solution (within the uncer- tainties of ~38La half-life and isotopic measurement). Geol. Surv. of Japan, Higashi 1-1-3 Yatabe, Ibaraki 305, Japan.

83:3292 Werner, Friedrich and Andreas Wetzel, 1982. Inter-

pretation of biogenic structures in oceanic sedl-

ments. Bull. Inst. Gdol. Bassin Aquitaine, 31/32: 275-288.

Basic concepts and problems in applying ichno- logical nomenclature to the description of deep- water bioturbation patterns are illustrated. A 'storey model' is introduced to explain such patterns as the 'condensation' of structures of different ages within a single layer and the tendency for the 'displacement' of structures from upper to lower stories. Ichno- faunal associations and storey zonation vary with sedimentation rate, nutrient availability, grain size, and redox conditions. Geol.-Palaontol. Inst. Olshau- senstr. 40/60, D-2300 Kiel, FRG. (hbf)

D40. Area studies, surveys, bathymetry

83:3293 Jacobi, R.D., 1982. Microphysiography of the south-

eastern North Atlantic and its implications for the distribution of near-bottom processes and related sedimentary facies. Bull. Inst. Gdol. Bassin Aq- uitaine, 31/32: 3 ! -46.

Reflectivity data and the microphysiography of the NW African margin (3°-23°N) indicate the distri- bution and relative effectiveness of turbidity flows, sediment slides, and geostrophic bottom currents in shaping the continental rise. The largest turbidity flow pathway, the Cayar Canyon system, extends 900 kin. Sediment slides are common; bottom currents are widespread but weaker now than in the

OLR (1983) 30 (6) D. Submarine Geology and Geophysics 447

past. A depositional model for the area is proposed. Dept. of Geol. Sci., SUNY, 4240 Ridge Lea Rd., Amherst, N.Y. 14226, USA. (hbf)

83:3294 Klein, G. DeV., Y.A. Park, J.H. Chang and C.S.

Kim, 1982. Sedimentology of a subtidal, tide- dominated sand body in the Yellow Sea, south- west Korea. Mar. Geol., 50(3):221-240. Dept. of Geol., Univ. of Illinois, 1301 W. Green St., Urbana, Ill. 61801, USA.

83:3295 Mitchell-Tapping, H.J., 1982. Wave-climate x-ray

study of modern marine carbonate sediment around Water Island, U.S.V.I. Carib. J. Sci., 18(1/4):113-114. Dept. of Geol., Florida State Univ., Tallahassee, Fla. 32306, USA.

83:3296 Pettinga, J.R., 1982. Upper Cenozoic structural

history, coastal southern Hawke's Bay, New Zealand. N.Z. Jl Geol. Geophys., 25(2): 149-191. Includes maps, diagrams, sections. Dept. of Geol., Univ. of Canterbury, Private Bag, Christ- church 1, New Zealand.

D50. Subsurface structure

83:3297 Davey, F.J., D.J. Bennett and R.E. Houtz, 1982.

Sedimentary basins of the Ross Sea, Antarctica. N.Z. Jl Geol. Geophys., 25(2):245-255.

Three major sedimentary basins were surveyed with seismic refraction and variable angle reflection sonobuoy measurements. Beneath the continental shelf the Eastern Basin, with up to 4 km of sedimentary fill, probably represents downwarping under the load of Late Cenozoic glaciomarine sediments. The Central Trough, also containing ~4 km of fill, appears to be a failed rift formed during Eocene spreading. The Victoria Land Basin, and its 3 km of sediments, probably resulted from uplift of the Transantarctic Mountains. Geophys. Div., DSIR, P.O. Box 1320, Wellington, New Zealand. (hbf)

83:3298 Knox, G.J., 1982. Taranaki Basin INew Zealand]

structural style and tectonic setting. N.Z. Jl Geol. Geophys., 25(2):125-140. Includes maps, dia- grams, seismic sections. Exploration Dept., Thai Shell Explor. and Prod. Co. Ltd., P.O. Box 345, 10 Soonthornkosa Rd., Bangkok 10110, Thai- land.

D60. Geomorphology (fans, canyons, etc.)

83:3299 Bouma, A.H., 1982. Submarine canyon-fan systems

in a diapirically controlled area, Guff of Mexico. Bull. Inst. G~ol. Bassin Aquitaine, 31/32:111-125. Gulf Science & Tech. Co., P.O. Box 2038, Pittsburgh, Pa. 15230, USA.

83:3300 Cremer, Michel, 1982. Quaternary sedimentation of

the Cap-Ferret deep-sea fan. Bull. Inst. G6ol. Bassin Aquitaine, 31/32:73-88. (In French, Eng- lish abstract.)

Wllrm and Holocene deposits are mainly silty turbidites, distributions of which are controlled by fan morphology. Fan construction is the result of several sedimentary cycles attributed to glacio- eustatic sea level variations. Inst. de Geol. du Bassin d'Aquitaine, Univ. de Bordeaux I, 351 cours de la Liberation, 33405, Talence Cedex, France.

83:3301 Lewis, D.W., 1982. Channels across continental

shelves: co-requisites of canyon-fan systems and potential petroleum conduits. N.Z. Jl Geol. Geophys., 25(2):209-225.

Shelf channels result from erosion or retrogressive mass failures on the slope. Channel-filling sediments commonly include permeable rocks capable of acting as reservoirs. Because the channel-canyon-fan system taps a wide range of potential hydrocarbon source rocks, shelf channels are likely petroleum conduits or traps. Geol. Dept., Univ. of Canterbury, Private Bag, Christchurch, New Zealand.

83:3302 Monaco, Andr6 et al., 1982. The Ebro and Rhone

deep-sea fans: an attempt to define the mecha- nisms of supply. Bull. Inst. Gdol. Bassin Aquitaine, 31/32:99-109. (In French, English abstract.)

Ebro Fan is composed of several linear and laterally coalescent lobes, each fed by shallow canyons incised in a narrow and steep slope. In contrast, Rhone Fan is formed by several superimposed depositional lobes that are aggrading from a major canyon and fan valley system that begins on the upper slope. Late Quaternary stratigraphy shows a sharp change from Pleistocene turbidite deposition to Holocene hemipelagic deposition with shifting of the depocenter to the inner shelf deltas. Whereas the Rhone Fan accords with previously described examples of modern deep-sea fans, the Ebro Fan system sharply contrasts and provides new insights