Geophysical investigations of the tectonic boundary between East and West Antarctica
Science
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Abstract
The Transantarctic Mountains (TAM), which separate the West Antarctic rift system from the stable shield of East Antarctica, are the largest mountains developed adjacent to a rift. The cause of uplift of mountains bordering rifts is poorly understood. One notion based on observations of troughs next to many uplifted blocks is that isostatic rebound produces a coeval uplift and subsidence. The results of an over-snow seismic experiment in Antarctica do not show evidence for a trough next to the TAM but indicate the extension of rifted mantle lithosphere under the TAM. Furthermore, stretching preceded the initiation of uplift, which suggests thermal buoyancy as the cause for uplift.
Suggested Citation
ten Brink, U., Bannister, S., Beaudoin, B.C., Stern, T., 1993, Geophysical investigations of the tectonic boundary between East and West Antarctica: Science, v. 261, no. 5117, p. 45-50, https://doi.org/10.1126/science.261.5117.45.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Geophysical investigations of the tectonic boundary between East and West Antarctica |
| Series title | Science |
| DOI | 10.1126/science.261.5117.45 |
| Volume | 261 |
| Issue | 5117 |
| Year Published | 1993 |
| Language | English |
| Publisher | American Association for the Advancement of Science |
| Contributing office(s) | Woods Hole Coastal and Marine Science Center |
| Description | 6 p. |
| First page | 45 |
| Last page | 50 |
| Other Geospatial | Antarctica |