Glacial history of the Framnes Mountains, East Antarctica.Entry ID: ASAC_1332
Abstract: Geological evidence from the Framnes Mountain, East Antarctica, will reveal changes in ice thickness from the Last Glacial Maximum 20,000 years ago to the present. A computer simulation of changes in ice thickness will show how the ice sheet interacts with climate and sea level, which is important for predicting future changes.
Cosmogenic isotope samples were taken from 29 locations including ... Welch Island (1 sample), Mawson area (1 sample), Mt Henderson area (7 samples), and the northern (13 samples), central (3 samples) and southern (2 samples) Masson ranges. No samples were taken from the Casey Range or the David Range (with the exception of the Mt Hordern area (2 samples). Mapping of the glacial geology was undertaken - few trimlines were evident and moraines where present consisted dominantly of local lithologies. The glacial clasts sampled for cosmogenic isotope analysis were felsic erratics perched on or near to stable hilltop surfaces, with clear sky exposure (conditions ideal for cosmogenic isotope dating).
Sediment analyses to support interpretations of the glacial history are being undertaken in 2004-2005.
The fields in this dataset are:
(Click for Interactive Map)
Start Date: 2001-11-15Stop Date: 2002-02-28
Quality Cosmogenic isotope analyses--> The samples taken were almost uniformly of a high quality (conditions ideal for cosmogenic isotope dating). Details of the dating undertaken will be posted once sample processing has occurred and accelerator targets have been run.
Sedimentology --> will consist of grain size analyses (Malvern laser sizer and settling tube), elemental analyses (XRF) and clay fraction analysis (XRD) to be made public domain following thesis production at start of 2006.
Surface weathering --> data were collected according to the Moriwaki scheme.
Access Constraints The sampling locations are available for download from the url given below.
The Sampling photographs are data and are not available until the beginning of 2006.
Use Constraints This data set conforms to the PICCCBY Attribution License
Data Set Progress
Distribution Media: HTTP
Distribution Size: 1349 KB
Distribution Format: word, excel, images
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Phone: +61 2 9850 8391
Fax: +61 2 9850 8420
Email: damian.gore at mq.edu.au
Department of Physical Geography Macquarie University
Province or State: New South Wales
Postal Code: 2109
Creation and Review Dates
DIF Creation Date: 2001-04-09
Last DIF Revision Date: 2008-04-10