Age of the Black Prince Volcanics in the Central Admiralty Mountains and Possibly Related Hypabyssal Rocks in the Millen Range, Northern Victoria Land, Antarctica
- Edmund Stump
Published Online: 16 MAR 2013
Copyright 1986 by the American Geophysical Union.
Geological Investigations in Northern Victoria Land
How to Cite
Adams, C. J., Whitla, P. F., Findlay, R. H. and Field, B. F. (1986) Age of the Black Prince Volcanics in the Central Admiralty Mountains and Possibly Related Hypabyssal Rocks in the Millen Range, Northern Victoria Land, Antarctica, in Geological Investigations in Northern Victoria Land (ed E. Stump), American Geophysical Union, Washington, D. C.. doi: 10.1002/9781118664957.ch8
- Published Online: 16 MAR 2013
- Published Print: 1 JAN 1986
Print ISBN: 9780875901978
Online ISBN: 9781118664957
- Geology—Antarctic regions—Victoria Land
Potassium-argon (K-Ar) total-rock ages are reported for two andesites at Mount Black Prince (Admiralty Mountains) and five andesite-rhyodacite dikes, one from the Admiralty Mountains and four from the Millen Range, in northern Victoria Land, Antarctica. Five of the ages determined, including those of the Black Prince flows, are in the range 323–382 Ma; the other results are 300 Ma and 307 Ma. The older ages in the range 350–382 Ma are a minimum estimate for the Black Prince Volcanics and associated intrusives and confirm the mid-Devonian to early Carboniferous age deduced from plant fossils in intercalated volcaniclastic sediments. The volcanics may be part of the igneous cycle that produced widespread granite plutons in this region during the period late Devonian to early Carboniferous.