Geology of the Terre Adélie Craton (135 – 146˚ E)
Open-File Report
2007-1047-SRP-048
By: R.P. Ménot, G. Duclaux, J.J. Peucat, Y. Rolland, S. Guillot, M. Fanning, J. Bascou, D. Gapais, and A. Pêcher
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Abstract
More than 15 years of field and laboratory investigations on samples from Terre Adélie to the western
part of George Vth Land (135 to 146°E) during the GEOLETA program allow a reassessment of the Terre Adélie
Craton (TAC) geology. The TAC represents the largest exposed fragment of the East Antarctic Shield preserved from
both Grenville and Ross tectono-metamorphic events. Therefore it corresponds to a well-preserved continental
segment that developed from the Neoarchean to the Paleoproterozoic. Together with the Gawler Craton in South
Australia, the TAC is considered as part of the Mawson continent, i.e. a striking piece of the Rodinia Supercontinent.
However, this craton represents one of the less studied parts of the East Antarctic Shield. The three maps presented
here clearly point out the extent of two distinct domains within the Terre Adélie Craton and suggest that the TAC was
built up through a polyphased evolution during the Neoarchean-Siderian (c.a. 2.5Ga) and the Statherian (c.a. 1.7Ga)
periods. These data support a complete re-assessment of the TAC geology and represent a valuable base for the
understanding of global geodynamics changes during Paleoproterozoic times.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Geology of the Terre Adélie Craton (135 – 146˚ E) |
| Series title | Open-File Report |
| Series number | 2007-1047-SRP-048 |
| DOI | 10.3133/ofr20071047SRP048 |
| Year Published | 2007 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Description | 5 p. |
| Larger Work Type | Report |
| Larger Work Subtype | USGS Numbered Series |
| Larger Work Title | Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007 |
| Other Geospatial | Antarctica |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |