Samuel S. Goldich, A. O. Nier, A. L. Washburn
Abstract
Biotite from paragneiss of Gneiss Point, McMurdo Sound, Antarctica is dated at 520 m y by the A40/K40 method. Metamorphism of Precambrian sediments at the close of Precambrian or in Cambrian time is indicated, but additional work is needed.
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Biotite from paragneiss of Gneiss Point, McMurdo Sound, Antarctica is dated at 520 m y by the A40/K40 method. Metamorphism of Precambrian sediments at the close of Precambrian or in Cambrian time is indicated, but additional work is needed.
Key concepts: Precambrian, Gneiss, Geology, Metamorphism, Sound (geography), Biotite, Geochemistry, Metamorphic rock