IMMEDIATELY north of the village of Karacayir, vilayet Sivas, Turkey, a small intrusion of rather coarse-grained syenite occurs in a banded marble formation of unknown age. Here I had occasion to ...
Letter Published: 12 March 1955 Age Measurements on a Pegmatitic Mica from the Rhodesian Shield G. D. L. SCHREINER, R. T. JAMIESON & B. F. J. SCHONLAND Nature 175, 464 (1955) Cite this article ...
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