Dataset Information
Erosion History and Sediment Provenance of East Antarctica from Multi-method Detrital Geo- and Thermochronology
Data DOI:
Cite as
Gehrels, G., Reiners, P., & Thomson, S. (2012) "Erosion History and Sediment Provenance of East Antarctica from Multi-method Detrital Geo- and Thermochronology" U.S. Antarctic Program (USAP) Data Center. doi:
AMD - DIF Record(s)
Much of the inventory of East Antarctic bedrock geochronology, as well as a record of its erosional history, is preserved in Cenozoic sediments around its margin. This project is to use these sediments to understand their sub-ice provenance and the erosional history of the shield by measuring ages of multiple geo- and thermochronometers on single detrital crystals and on multiple crystals in detrital clasts (U/Pb, fission-track, and (U-Th)/He dating of zircon and apatite, and 40Ar/39Ar dating of hornblende, mica, and feldspar). The combination of multi-chronometer ages in single grains and clasts provides a powerful fingerprint of bedrock sources, allowing us to trace provenance in Eocene fluvial sandstones through Quaternary diamicts around the margin. Multiple thermochronometric (cooling) ages in the same grains and clasts also allows us to interpret the timing and rates of erosion from these bedrock sources. Delineating a distribution of bedrock age units, their sediment transport connections, and their erosional histories over the Cenozoic, will in turn allow us to test tectonic models bearing on: (1) the origin of the Gamburtsev Subglacial Mountains, (2) fluvial and topographic evolution, and (3) the history of glacial growth and erosion.
Gehrels, George; Reiners, Peter; Thompson, Stuart
Date Created:
USAP-DC (current) - LDEO-LEGACY (original)
Spatial Extent(s)
West: 61.9, East: 75.08, South: -73.7, North: -67.28
Temporal Extent(s)
Start: 2009-06-15 - End: 2012-05-31
Data Files
4.3 kB

MD5 Checksum: c337a2d60936ded4e6c6e0876112c4f0 File Type: HyperText Markup Language (HTML)

535.6 kB

MD5 Checksum: 88f7ef71bb983078ef89aef5c85ba63d File Type: Microsoft Excel

1.9 kB

MD5 Checksum: b8d1ca58ffe3a97276cbb6e16493ac28 File Type: HyperText Markup Language (HTML)

1.0 MB

MD5 Checksum: b30fcfcc0e3bfce69ea841a9f949ed36 File Type: Binary File; Microsoft Excel

This dataset has been downloaded 0 times since March 2017 (based on unique date-IP combinations)