LacCoreLacCoreNational Lacustrine Core RepositoryNational Lacustrine Core Repository

Anders Noren, Curator

LacCore History

• Limnological Research Center (LRC): 1959 -• provided many services prior to LacCore

LacCore History

• Limnological Research Center (LRC): 1959 -• provided many services prior to LacCore

• Repository founded at U of MN coincident with first GLAD project (2000)

LacCore History

• Limnological Research Center (LRC): 1959 -• provided many services prior to LacCore

• Repository founded at U of MN coincident with first GLAD project (2000)

• Need for core processing capacity• Equipment upgrades

LacCore History

• Limnological Research Center (LRC): 1959 -• provided many services prior to LacCore

• Repository founded at U of MN coincident with first GLAD project (2000)

• Need for core processing capacity• Equipment upgrades

• Expand scope to include smaller projects (2003)

LacCore History

•Facilities/equipment driven by Global Lake Drilling (GLAD) program

• Encourage use by other researchers• Adapt to needs of all projects at all scales• Support all phases of research

StaffCurator: Anders NorenLab Manager: Amy Myrbo Assistant Curator: Kristina BradyTechnicians: 5 to 15 (unsalaried)

Director: Emi ItoCo-PI: Steve Colman, Director,

LLO, DuluthCo-PI: Bryan Shuman, U.

WyomingEAG: 7 membersFunding: NSF-IF; University of

Minnesota

Components

1. Planning2. Field3. Core processing/Initial Core

Description4. Sample prep/Analysis5. Archiving

Components1. PLANNING for all project

phasesa. Budgetb. Timec. Equipment and supplies

needsd. Shippinge. Trainingf. Analytical possibilitiesg. Curation

Components1. PLANNING for all project

phases

• Submit collaborative proposals

Components1. Planning2. FIELD

a. Equipment rentalb. Equipment training,

operationc. Supplies (core liner, etc.)d. Core handlinge. Core storagef. Core transport

Field Equipment1.Surface cores: push, gravity, freeze,

Hongve, Eckman dredge2.Long cores: Kullenberg, Livingstone (with

or without single-use liner modification), Mackereth, Nesje, vibracorer

3.Vessels: 18-foot row/motorboat, 4 canoes, two Carolina Skiff boats for Kullenberg (23-foot tower), pontoon, cataraft, innertube. (All moonpooled)

4.GPR5.Water sampling and analysis6.Climate-controlled shipping container7.Two 4x4 trucks

Components1. Planning2. Field3. CORE PROCESSING / ICD

a. Multisensor loggingi. gamma densityii. acoustic velocityiii. electrical resistivityiv. magnetic susceptibility

(loop and high-resolution point sensors)

v. natural gamma radiation

Geotek Geotek MSCLMSCL

Geotek XYZ-Geotek XYZ-MSCLMSCL

Components1. Planning2. Field3. CORE PROCESSING / ICD

a. Multisensor loggingb. High-resolution digital

imaging

DMT CoreScanDMT CoreScanGeotek GeoScan Geotek GeoScan IIIIII

10 pix/mm10 pix/mm

20 20 p/mp/mmm

Components1. Planning2. Field3. CORE PROCESSING / ICD

a. Multisensor loggingb. High-resolution digital

imagingc. Description

i. macro-scale: color, texture, structureii. micro-scale: mineralogical and biological components

Initial Core Description

Smear slidesSmear slides

CoreWallCoreWall

Components1. Planning2. Field3. Core processing/ICD4. SAMPLE PREP/ANALYSIS

a.Dedicated stations for each analysis

b.Technicians available

Services / Stations / Equipment• Smear slides

• Sampling• LOI• Carbon coulometry• Sulfur coulometry• Biogenic silica• Grain size• Pollen prep• XRD prep• Thin section prep

• Isotope prep• Diatom prep• AMS 14C prep• Charcoal prep• Centrifuges• Drying ovens• Desiccators • Fume hoods• Microscopes: pollen,

diatom, petrographic, binocular

ITRAX XRF core scannerX-radiographyLLO

Components1. Planning2. Field3. Core processing/ICD4. Sample prep/Analysis5. ARCHIVING

a. Physical curation: storage, labeling

b. Metadata / database management

c. Sample preservation / management

d. Depth scale generatione. Sampling

Repository PolicyAccession old or new cores,

given:• Adequate metadata• Known sampling history• Good condition

Repository PolicySampling moratorium• Two years from core retrieval• Original PIs only• At conclusion: Cores available

for sampling, ICD data & images made public

Repository PolicySample requests• Core IDs, depths, spl volume• Purpose / intended research• Sampling protocol

Collection• 10,400 m of core (stored at

LacCore)• 8,400 m drill cores• 2,000 m short cores

Future: • 2,500 m El’gygytgyn• Accession old collections

3320 ft2 / 310 m2

Virtual Repository• Store metadata / data for cores

not located at LacCore• Rapid assessment of previous

work done in a geographical region, or on a proxy

• Possible sample access• Simplify transition to

permanent storage

DatabaseStores all metadata for

expeditions, holes, cores, sections, samples; analytical data

DatabaseStores all metadata for

expeditions, holes, cores, sections, samples; analytical data

Mathematically corrects depth scale for gaps and gas expansion

Provides multiple uniform corrected depth scales for all samples/analyses

DatabaseStores all metadata for

expeditions, holes, cores, sections, samples; analytical data

Mathematically corrects depth scale for gaps and gas expansion

Provides multiple uniform corrected depth scales for all samples/analyses

In-progress: Online/searchable; Corelyzer integration; ICDP Curation DIS; ??

Online table, .csv, .kml

Other Services• Perform multisensor logging

prior to user arrival or after departure

9/1/06 – 9/1/07MSCL: 220 days

XYZ-MSCL: 175 days

• Perform multisensor logging prior to user arrival or after departure

• Train visitors in equipment operation, core description

Other Services

• Perform multisensor logging prior to user arrival or after departure

• Train visitors in equipment operation, core description

• Provide workshops, short courses

Other Services

• Perform multisensor logging prior to user arrival or after departure

• Train visitors in equipment operation, core description

• Provide workshops, short courses

• Sell supplies (field, lab, curatorial) at cost

Other Services

• Perform multisensor logging prior to user arrival or after departure

• Train visitors in equipment operation, core description

• Provide workshops, short courses

• Sell supplies (field, lab, curatorial) at cost

• Produce recipes/SOPs, distribute on web

Other Services

Costs / Fees

• field equipment rental• shipping• sample prep / analysis• sampling• supplies consumed

VisitorsVisitors

Year

2003 2004 2005 2006 2007

Vis

ito

rs

0

20

40

60

80

100

120

140

550-700 visitor-days annually

VisitorsVisitors

Distance Visitors Travel

on-campus, 20.2%

<400mi, 35.2%

400-1500mi, 33.9%

>1500mi, 10.7%

Project Size

0-50m, 56.9%

50-100m, 16.3%

>100m, 26.9%

Core ProcessedCore Processed

Year

1998 1999 2000 2001 2002 2003 2004 2005 2006 2007

Met

ers

0

400

800

1200

1600

Repositorynon-Repository

Samples DisbursedSamples Disbursed

Year

2001 2002 2003 2004 2005 2006 2007

Th

ou

san

ds

0

2

4

6

8

10

12

14

16

18

20