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Episodic rifting of phanerozoic rocks in the Victoria Land basin, Western Ross Sea, Antarctica

Science

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Abstract

Multichannel seismic-reflection data show that the Victoria Land basin, unlike other sedimentary basins in the Ross Sea, includes a rift-depression 15 to 25 kilometers wide that parallels the Transantarctic Mountains and contains up to 12 kilometers of possible Paleozoic to Holocene age sedimentary rocks. An unconformity separates the previously identified Cenozoic sedimentary section from the underlying strata of possible Mesozoic and Paleozoic age. Late Cenozoic volcanic rocks intrude into the entire section along the eastern flank of the basin. The Victoria Land basin is probably part of a more extensive rift system that has been active episodically since Paleozoic time. Inferred rifting and basin subsidence during Mesozoic and Cenozoic time may be associated with regional crustal extension and uplift of the nearby Transantarctic Mountains.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Episodic rifting of phanerozoic rocks in the Victoria Land basin, Western Ross Sea, Antarctica
Series title:
Science
Volume
229
Issue:
4718
Year Published:
1985
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Science
First page:
1085
Last page:
1087
Number of Pages:
3