Lambert Graben
Lambert Graben is a graben in Antarctica. It intersects the coast at Prydz Bay and contains the largest glacier in the world, Lambert Glacier. The graben is a Permian rift which contains coal beds. The graben has been correlated with the coal bearing Godavari Valley of the Indian Peninsula prior to the breakup of Gondwana.[1]
Geology
The graben is a Late Palaeozoic-Mesozoic triple junction failed rift. Precambrian metamorphic rocks, composed of granulite-facies sequences intruded by granites and pegmatites, are overlain by the Permian sedimentary Amery Group. These rocks outcrop on the Platforma Kamenistaja and Else Platform within the northern Jetty Peninsula (Jetty Oasis).[2]
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References
- Mat Harrowfield, et al., Tectonic significance of the Lambert graben, East Antarctica: Reconstructing the Gondwanan rift, Geology, March 2005, v. 33, no. 3, p. 197-200, doi:10.1130/G21081.1
- Hofmann, J. (1991). Thomson, M.R.A.; Crame, J.A.; Thomson, J.W. (eds.). Fault tectonics and magmatic ages in the Jetty Oasis area, Mac.Robertson Land: a contribution to the Lambert rift development, in Geological Evolution of Antarctica. Cambridge: Cambridge University Press. pp. 107–112. ISBN 9780521372664.
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