Search Help
Did you find what you were looking for? Yes No
Soil, relic ice, permafrost, Hart Ash and granite samples from the Lower Victoria Valley, Beacon Valley, near the Meserve Glacier in Wright Valley, and Kennar Valley to determine the deposition of this ice
Entry ID: K047_2004_2006_NZ_1


Summary
Abstract: Ancient glacial ice that has stagnated and lies buried underneath rock debris has been found in the Beacon Valley and more recently in several other valleys. This ice poses the possibility of obtaining a much older climate data than can be obtained from Antarctic ice sheet cores. Soil pits were dug above massive relic ice in the Lower Victoria Valley, Beacon Valley, near the Meserve Glacier in Wright Valley, and Kennar Valley and the ice was sampled and a core was sampled to a depth of about 1m. The core was dated using atmospheric 10Be on the >62 micron fraction of sediment from the core. The use of atmospheric 10Be dating to date ice needed its methods developed further and tested against a surface of known age. Samples of Hart Ash between the Meserve and Hart Glaciers in the Wright Valley were collected as they have a known radiometric date of 3.9Ma. Samples of relic ice were taken at 5cm intervals down the ice cores and was analysed for chemical and isotopic analysis. Resistivity soundings (one dimensional, vertical profile) were made in the Lower Victoria Valley and Beacon Valleys at selected locations where relic ice was sampled to help characterize the extent and depth of the relic ice. Samples of granite collected from the Victoria Valley, Wright Valley, Beacon Valley and Kennar Valley, used for fingerprinting were cut and placed in a laser ablated chamber attached to a multi collector mass spectrometer. Lead isotopes 204, 206 and 207 were measured in the feldspar of each sample to show areas of feldspar genesis which are unique to the magma bodies where granitic rocks crystallize. The aim was to establish the setting of these ice bodies and dating the length of time they have been in their present situation.
Geographic Coverage
 N: -77.36 S: -77.88  E: 162.35  W: 160.55
 Min Altitude: 400  Max Altitude: 1500  Min Depth: 0  Max Depth: 2
 N: -77.38 S: -77.9  E: 162.38  W: 160.43
 Min Altitude: 200  Max Altitude: 1800  Min Depth: 0  Max Depth: 2

Temporal Coverage
Start Date: 2004-11-13
Stop Date: 2004-12-10

Start Date: 2005-11-14
Stop Date: 2005-12-08


Paleo_Temporal_Coverage
Paleo Start Date: 8 Ma
Paleo Stop Date: Present
Chrono Unit:


Location Keywords
CONTINENT > ANTARCTICA
CONTINENT > ANTARCTICA > VICTORIA VALLEY
CONTINENT > ANTARCTICA > WRIGHT VALLEY
CONTINENT > ANTARCTICA > BEACON VALLEY
CONTINENT > ANTARCTICA > KENNAR VALLEY
CONTINENT > ANTARCTICA > SOUTH VICTORIA LAND
GEOGRAPHIC REGION > POLAR


Science Keywords
ATMOSPHERE >AEROSOLS >DUST/ASH/SMOKE    [Definition]
LAND SURFACE >EROSION/SEDIMENTATION >SEDIMENTS    [Definition]
LAND SURFACE >GEOMORPHIC LANDFORMS/PROCESSES >AEOLIAN PROCESSES    [Definition]
LAND SURFACE >GEOMORPHIC LANDFORMS/PROCESSES >GLACIAL PROCESSES    [Definition]
SOLID EARTH >ROCKS/MINERALS/CRYSTALS >IGNEOUS ROCKS    [Definition]
SOLID EARTH >TECTONICS >VOLCANIC ACTIVITY >ERUPTION DYNAMICS >ASH/DUST COMPOSITION    [Definition]
LAND SURFACE >FROZEN GROUND >GROUND ICE    [Definition]
LAND SURFACE >FROZEN GROUND >PERIGLACIAL PROCESSES    [Definition]
LAND SURFACE >FROZEN GROUND >PERMAFROST    [Definition]


ISO Topic Category
GEOSCIENTIFIC INFORMATION


Platform
FIELD SURVEYS    [Information]
GROUND-BASED OBSERVATIONS    [Information]
FIELD INVESTIGATION    [Information]


Instrument
SEDIMENT CORERS    [Information]
VISUAL OBSERVATIONS    [Information]


Quality
During the first season of sampling, all of the frozen samples were lost due to thawing in transit from Antarctica to New Zealand. Samples from the second season of sampling are stored at Victoria University Wellington and available for use.


Data Set Progress
IN WORK


Data Center
Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand    [Information]
Data Center URL: http://www.antarcticanz.govt.nz/

Data Center Personnel
Name: SHULAMIT GORDON
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: s.gordon at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand


Personnel
WARREN DICKINSON
Role: INVESTIGATOR
Phone: +64 4 463 6199
Fax: +64 4 463 5186
Email: Warren.Dickinson at vuw.ac.nz
Contact Address:
School of Geography
Environment and Earth Science
Victoria University of Wellington
PO BOX 600
City: Wellington
Country: NEW ZEALAND


CEISHA POIROT
Role: DIF AUTHOR
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: c.poirot at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand


SHULAMIT GORDON
Role: DIF AUTHOR
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: s.gordon at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand


Publications/References
Schiller, M., Dickinson, W., Ditchburn, R.G., Graham, I.J. and Zondervan, A. 2009. Atmospheric 10Be in an Antarctic soil: Implications for climate change. Journal of Geophysical Research 114, F01033, doi: 10.1029/2008JF001052.

Creation and Review Dates
DIF Creation Date: 2009-03-03
Last DIF Revision Date: 2016-01-27



Link to Web Site