Volcanic geology of Admiralty Bay, King George Island, Antarctica

Guangfu, Xing and Dezi, Wang and Qingmin, Jin and Weizhou, Shen and Kuiyuan, Tao (2002) Volcanic geology of Admiralty Bay, King George Island, Antarctica. Advances in Polar Science, 13 (2). pp. 89-102.

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Abstract

At Admiralty Bay of central King George Island, Keller Peninsula, Ullman Spur and Point Hennequin are main Tertiary volcanic terranes. Field investigation and isotopic datings indicate that, there occurred three periods of eruptions (three volcanic cycles) and accompanying N-toward migration of the volcanic center on Keller Peninsula. After the second period of eruptions, the crater collapsed and a caldera was formed, then later eruptions were limited at the northern end of the peninsula and finally migrated to Ullman Spur. Thus Keller Peninsula is a revived caldera, and its volcanism migrated toward E with time. Point Hennequin volcanism happened more or less simultaneously with the above two areas, but has no clear relation in chemical evolution with them, frequently it belongs to another independent volcanic center.

Item Type:	Article
Related URLs:
Keywords:	caldera, temporal-spatial evolution, Tertiary volcanism, Admiralty Bay, King George Island.
Subjects:	Unspecified
Organizations:	Unspecified
Date Deposited:	05 May 2023 13:09
URI:	http://library.arcticportal.org/id/eprint/2240

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