Seismic-reflection signature of cretaceous continental breakup on the Wilkes Land margin, Antarctica
The passive (rifted) continental margin of Wilkes Land, Antarctica, is characterized on seismic reflection records by (i) in the south, a block-faulted sequence of highly stratified continental beds overlain by two distinct unconformities; (ii) a transitional, greatly thinned continental crust overlain by material interpreted to be flood basalt; and (iii) in the north, oceanic crust with a boundary ridge at its edge. The Mohorovic??ic?? discontinuity can be followed across the continent-ocean boundary and shows a progressive thinning of continental crust to a minimum of 2.5 kilometers at its northern edge.
Citation Information
Publication Year | 1985 |
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Title | Seismic-reflection signature of cretaceous continental breakup on the Wilkes Land margin, Antarctica |
Authors | S. L. Eittreim, M. A. Hampton, J.R. Childs |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Science |
Index ID | 70012810 |
Record Source | USGS Publications Warehouse |