LacCore National Lacustrine Core Facility
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Transcript of LacCore National Lacustrine Core Facility
LacCoreLacCoreNational Lacustrine Core FacilityNational Lacustrine Core Facility
Anders Noren, Curator
StaffCurator: Anders NorenLab Manager: Amy Myrbo Assistant Curator: Kristina BradyTechnicians: 5 to 15 (unsalaried)
Director: Emi ItoCo-PI: Steve Colman, Director,
LLO, DuluthEAG: 7 membersFunding: NSF-IF; University of
Minnesota
9th Year
•Facilities & equipment driven by Global Lake Drilling/GLAD program
• Adapt to needs of all projects at all scales• Support all phases of research
• Recognize differing needs/expectations
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. 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
Components1. Planning2. Field3. CORE PROCESSING / ICD
a. Multisensor loggingb. High-resolution digital
imaging
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
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
Collection• 2,400 holes• 11,500 m of core (stored at
LacCore)• 8,900 m drill cores• 2,600 m short cores (+freeze,
permafrost)
Future: • Hominid Sites and Paleolakes
Drilling Project (Ethiopia): 1000m?
• Billions of small projects• Accession old collections
3320 ft2 / 310 m2
Data Repository• Store metadata / data for cores
stored at other institutions• Rapid assessment of previous work
done in a geographical region, or on a proxy
• Sample access• Simplify transition to permanent
storage
DatabaseFileMaker Pro• Stores 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
DIS / ICDP…working on a new system:
consistent; fast; online
Online table,
.csv, .kml
• Perform multisensor logging prior to user arrival or after departure
• Train visitors in equipment operation, core description
• Provide workshops, short courses• Sell supplies/equipment (field, lab,
curatorial) at cost• Produce recipes/SOPs, distribute on
web
Other Services
Costs / Fees
• field equipment rental• shipping• sampling• sample prep / analysis• supplies
StatsVISITORS: 1200 visits per year (200
unique)
CONTACTS: 4000 contacts per year (500 unique)( US, Canada, Mexico, Europe)
CORES: 1500m per year / 1000m archived
SAMPLES: 10,000-12,000 per year• more requests / small batches• greater use of online resources for
discovery
Project 1: Student
• Graduate student from UC-Berkeley• 12m of Holocene core from remote lake
in British Columbia• Advisor experienced in coring,
processing; student needed training in ICD
• Minimal local facilities: MSCL, linescan cameras, scope camera, sample prep
• Shipped cores to Minneapolis, spent five days
• Archived half of each core
Project 2: Faculty
• Geomorphologist from Macalester College
• Use new methods to measure past glacier fluctuations with lake sediment
• No experience with cores• One staff assisted throughout project• 20m of core analyzed and archived
Project 3: El’gygytgyn• Major international expedition:
~50 people from US, Germany, Russia, Canada
Camp
Ice road
Doubled ice thickness to
increase load capacity
120 miles from nearest roadAll materials hauled overland
No crane? No problem!
Platform base
Platform walls
Storm
• 400m sediment; 110m impact rock• 3.6Myr climate record
LacCore: field curation; permanent archiving