antarctic drilling and the corewall suite · antarctic drilling and the corewall suite richard levy...
TRANSCRIPT
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ANtarctic DRILLing and the CoreWall Suite
Richard LevyANDRILL Science Management OfficeUniv. of Nebraska-Lincoln
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1. Introduction and Brief Overview of ANDRILL Program
OUTLINE
2. Inaugural ANDRILL Projects and CoreWallProject schedule - drilling and post drillingResearch locations - on and off-iceCore flow and integration of data
3. Education and OutreachARISECoreWall ‘Lite’
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Recovering proximal records of ice sheet and climate history to complete the global climate puzzle
http://andrill.org
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BUILDING ON A LEGACY
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PROXIMAL RECORDS
GLACIALEUSTASY
ARGINS
• Obtain new and unique records of Cenozoic environmental change, proximal to ice sheets
• Test and calibrate chemostratigraphic and sequence stratigraphic proxy records
• Provide geological data input to glacial and climate models.
ANTARCTICCRYO-CYCLOSTRATIGRAPHY
DEEP-SEA OXYGENISOTOPE RECORD
SEQUENCE STRATIGRAPHYFROM CONTINENTAL MARGINS
DISTAL PROXIES
NATURE AND TIMING OF ICE SHEET VARIABILITY
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INAUGURAL PROJECTS
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The key aim of the MIS Project is to determine past ice shelf responses to climate forcing, including variability at a range of timescales.
?1 Ma
?5 Ma
MCMURDO ICE-SHELF PROJECT - 2006
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The key aim of the SMS Project is to establish a robust middle Miocene to recent history of past Antarctic ice sheet variation and climate evolution
SMS-X
1.0
0.9
0.8
0.7
0.6
0.5TWT (s)
1.1
1.2
Unit 3b: Lithofacies likely include muddy sandstone and sandy mudstone; finer grained, pelagic sediments increasing in the downdip direction.
Unit 3c: Sandy mudstone, muddy sandstone, minor pelagic sediments.
Unit 4: Diamitite, sandy mudstone, muddy sandstone in the upper section, and sandy mudstone in the lower section.
Unit 5: Diamitite and fine grained sediment.
Unit 6: Volcanic sand and glacial sediment; muddy sandstone and sandy mudstone.
Expected lithofacies.
3b
3c
5
4
6
SOUTHERN MCMURDO SOUND PROJECT - 2007
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DRILLING TECHNOLOGY
Alex Pyne - VUW
Leon Holloway
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100_???? T Falconer
Hot Water Drill Boilers/Hoses/Tanks
Guy wires for mast
Power pack
Rod ramp Catwalk
Drill fluids & cementing
Outriggers
Workshop
Generators
Plan view of Drill System
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Outriggers
Containers butt up against catwalk (L to R):
Cementing/water
Drill fluids (mud) x2
Workshop
Generators
Power pack
DRILL RIG, PLATFORM, AND CATWALK
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Sea riser max. depth of 1000m (water & ice)
Max depth of HWT (PQ) drill string 1230m
Max depth of HQ drill string 1700m
Max depth of NQ drill string 2500m
Sea floor: Detail of nesting sea riser and drill strings
(ANDRILL system at right)
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THROUGH THE ICE-SHELF
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MIS DRILLING BEGINS SOON
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RESEARCH LOCATIONS - DRILLING PHASE
45+
~10
30+
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TRANSPORT TO MCMURDO STATION
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CoreStorageFacility
CSEC Phase 2
S+SF
Albert P. Crary Science and Engineering Center (CSEC)
SCIENCE OPS - MCMURDO STATION
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SPLITTING FACILITY
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SCANNING FACILITY
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LOGGING
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PSICAT
Paleontological Stratigraphic Interval Construction and Analysis Tool
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CORE TOUR AND SAMPLING
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COREWALL ‘HOPES’ - OCTOBER 2006
ID: 555667
Massimo Pompilio
Univ. of Pisa
Clast and fabric
1. High resolution core images (inc. CoreScan)2. Integration - PSICAT3. Sample identification and details - ARF database(?)4. Ability to share data (securely) in ‘near-real time’
between all research sites
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COREWALL ‘HOPES’ - MARCH/APRIL 2007
ID: 555667
Massimo Pompilio
Univ. of Pisa
Clast and fabric
LAUNDRY LIST: e.g. clast count curve (total number per meter), downhole geophysics suite, rock petrophysics suite, XRF, paleomag, diatom abundance curves, CONOP, etc, etc.
A. ingens??
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CORE WORKSHOP AND INITIAL REPORT
CoreWall here!
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COREWALL ‘LITE’