Seismic-reflection signature of cretaceous continental breakup on the Wilkes Land margin, Antarctica
Science
By: Stephen Eittreim, Monty A. Hampton, and Jonathan R. Childs
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Abstract
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 Mohorovičić 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.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Seismic-reflection signature of cretaceous continental breakup on the Wilkes Land margin, Antarctica |
| Series title | Science |
| DOI | 10.1126/science.229.4718.1082 |
| Volume | 229 |
| Issue | 4718 |
| Year Published | 1985 |
| Language | English |
| Publisher | American Association for the Advancement of Science |
| Description | 3 p. |
| First page | 1082 |
| Last page | 1084 |
| Other Geospatial | Antarctica, Wilkes Land |