White, Duanne A; Bennike, Ole; Berg, Sonja; Harley, S; Fink, David; Kiernan, Kevin W; McConnell, Anne; Wagner, Bernd (2009): Weathering characteristics and lithology of samples from the Rauer Group, Antarctica, obtained in February/March 2007, and conducted with field support of POLARSTERN cruise ANT-XXIII/9 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.858210, Supplement to: White, DA et al. (2009): Geomorphology and glacial history of Rauer Group, East Antarctica. Quaternary Research, 72(1), 80-90, https://doi.org/10.1016/j.yqres.2009.04.001
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Abstract:
The presence of glacial sediments across the Rauer Group indicates that the East Antarctic ice sheet formerly covered the entire archipelago and has since retreated at least 15 km from its maximum extent. The degree of weathering of these glacial sediments suggests that ice retreat from this maximum position occurred sometime during the latter half of the last glacial cycle. Following this phase of retreat, the ice sheet margin has not expanded more than ~1 km seaward of its present position. This pattern of ice sheet change matches that recorded in Vestfold Hills, providing further evidence that the diminutive Marine Isotope Stage 2 ice sheet advance in the nearby Larsemann Hills may have been influenced by local factors rather than a regional ice-sheet response to climate and sea-level change.
Project(s):
Funding:
German Research Foundation (DFG), grant/award no. 5472008: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Coverage:
Median Latitude: -68.835470 * Median Longitude: 77.869126 * South-bound Latitude: -68.921500 * West-bound Longitude: 77.688360 * North-bound Latitude: -68.782500 * East-bound Longitude: 77.969600
Date/Time Start: 2007-02-25T00:00:00 * Date/Time End: 2007-03-16T00:00:00
Minimum Elevation: 8.0 m * Maximum Elevation: 90.0 m
Event(s):
DW-RI07-5 (Filla_Is_S12) * Latitude: -68.806630 * Longitude: 77.778310 * Date/Time: 2007-03-01T00:00:00 * Elevation: 42.0 m * Location: Filla Island, Rauer Group, Antarctica * Campaign: ANT-XXIII/9 (PS69) * Basis: Polarstern * Method/Device: Geological sample (GEOS) * Comment: samples: 1 rock, 3 erratics
DW-RI07-7 (Filla_Is_S6) * Latitude: -68.815180 * Longitude: 77.833500 * Date/Time: 2007-03-01T00:00:00 * Elevation: 70.0 m * Location: Filla Island, Rauer Group, Antarctica * Campaign: ANT-XXIII/9 (PS69) * Basis: Polarstern * Method/Device: Geological sample (GEOS) * Comment: samples: 1 rock, 2 erratics
DW-RI07-15 (Filla_Is_S1) * Latitude: -68.808930 * Longitude: 77.898480 * Date/Time: 2007-03-01T00:00:00 * Elevation: 46.0 m * Location: Filla Island, Rauer Group, Antarctica * Campaign: ANT-XXIII/9 (PS69) * Basis: Polarstern * Method/Device: Geological sample (GEOS) * Comment: samples: 1 rock, 3 erratics
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | White, Duanne A | |||
| 2 | Optional event label | Event 2 | White, Duanne A | |||
| 3 | Date/Time of event | Date/Time | White, Duanne A | |||
| 4 | Date/Time of event 2 | Date/Time 2 | White, Duanne A | |||
| 5 | Latitude of event | Latitude | White, Duanne A | |||
| 6 | Longitude of event | Longitude | White, Duanne A | |||
| 7 | Elevation of event | Elevation | m | White, Duanne A | ||
| 8 | Area/locality | Area | White, Duanne A | *inofficial name | ||
| 9 | Deposit type | Deposit type | White, Duanne A | |||
| 10 | Distance | Distance | km | White, Duanne A | to ice sheet | |
| 11 | Number | No | White, Duanne A | Schmidt hammer bedrock rebound | erratics | |
| 12 | Standard deviation | Std dev | ± | White, Duanne A | Schmidt hammer bedrock rebound | |
| 13 | Comment | Comment | White, Duanne A | for rebound value | ||
| 14 | Weathering Index | W.I. | White, Duanne A | Moriwaki Degree of Weathering (MDoW) | ||
| 15 | Gneiss | Gnei | % | White, Duanne A | quartz rich | |
| 16 | Gneiss | Gnei | % | White, Duanne A | felsig | |
| 17 | Gneiss | Gnei | % | White, Duanne A | mafic | |
| 18 | Gneiss | Gnei | % | White, Duanne A | garnet rich | |
| 19 | Gneiss | Gnei | % | White, Duanne A | other | |
| 20 | Comment | Comment | White, Duanne A | for gneiss lithology |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
438 data points