Jurassic Tholeiites in the Region of The Upper Rennick Glacier, North Victoria Land

  1. Edmund Stump
  1. D. H. Elliot,
  2. M. A. Siders and
  3. M. A. Haban

Published Online: 16 MAR 2013

DOI: 10.1002/9781118664957.ch11

Geological Investigations in Northern Victoria Land

Geological Investigations in Northern Victoria Land

How to Cite

Elliot, D. H., Siders, M. A. and Haban, M. A. (1986) Jurassic Tholeiites in the Region of The Upper Rennick Glacier, North Victoria Land, in Geological Investigations in Northern Victoria Land (ed E. Stump), American Geophysical Union, Washington, D. C.. doi: 10.1002/9781118664957.ch11

Author Information

  1. Institute Of Polar Studies And Department Of Geology And Mineralogy, The Ohio State University, Columbus, Ohio 43210

Publication History

  1. Published Online: 16 MAR 2013
  2. Published Print: 1 JAN 1986

ISBN Information

Print ISBN: 9780875901978

Online ISBN: 9781118664957

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Keywords:

  • Geology—Antarctic regions—Victoria Land

Summary

Lavas of the Kirkpatrick Basalt form a prominent series of mesas in the Rennick Glacier region. The stratigraphic thickness is about 780 m, consisting of up to 40 flows ranging from less than 1 m to as much as 135 m thick. Interbeds in the sequence occur sparsely and include both fossiliferous lacustrine beds and volcanogenic rocks. The lavas cover topography of at least 50 m. Correlative diabase sills of the Ferrar Dolerite, which intrude Beacon strata, occur near the southern end of Gair Mesa, along the plateau escarpment to the west, and to the east of Aeronaut Glacier. The structure at the southern end of Gair Mesa is a broad, shallow syncline; to the north a major fault separates the lavas from the escarpment to the west. Regionally, the lavas also form an isolated outcrop in the lower Rennick Glacier, whereas the diabase sills occur over a wide area. The Rennick graben postdates the Jurassic magmatism.