Abstract
Metamorphosed supracrustal rocks in the central Ross Sea sector of the Transantarctic Mountains are of Neoproterozoic age and not Cambrian. They include pillow basalts with a mantle separation age of 700-800 Ma. In the Sklelton glacier area, these rocks experienced two strong phases of deformation that produced folds and associated foliations. Both rocks and structures are cut by a 551±4 Ma unfoliated quartz syenite (late Neoproterozoic). The deformation and limited geochemical data suggest an active Antarctic plate margin whose late Neoproterozoic history is markedly different from that of the temporally equivalent rift to drift transition recorded along the autochthonous western margin of Laurentia. If these two cratons were ever contiguous, separation occurred by c700-800 Ma. -Authors
| Original language | English (US) |
|---|---|
| Title of host publication | Journal - Geological Society (London) |
| Pages | 677-682 |
| Number of pages | 6 |
| Volume | 150 |
| Edition | 4 |
| State | Published - 1993 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Environmental Science(all)
- Geology
Cite this
An active Neoproterozoic margin : evidence from the Skelton Glacier area, Transantarctic Mountains. / Rowell, A. J.; Rees, M. N.; Duebendorfer, Ernest M; Wallin, E. T.; Van Schmus, W. R.; Smith, E. I.
Journal - Geological Society (London). Vol. 150 4. ed. 1993. p. 677-682.Research output: Chapter in Book/Report/Conference proceeding › Chapter
}
TY - CHAP
T1 - An active Neoproterozoic margin
T2 - evidence from the Skelton Glacier area, Transantarctic Mountains
AU - Rowell, A. J.
AU - Rees, M. N.
AU - Duebendorfer, Ernest M
AU - Wallin, E. T.
AU - Van Schmus, W. R.
AU - Smith, E. I.
PY - 1993
Y1 - 1993
N2 - Metamorphosed supracrustal rocks in the central Ross Sea sector of the Transantarctic Mountains are of Neoproterozoic age and not Cambrian. They include pillow basalts with a mantle separation age of 700-800 Ma. In the Sklelton glacier area, these rocks experienced two strong phases of deformation that produced folds and associated foliations. Both rocks and structures are cut by a 551±4 Ma unfoliated quartz syenite (late Neoproterozoic). The deformation and limited geochemical data suggest an active Antarctic plate margin whose late Neoproterozoic history is markedly different from that of the temporally equivalent rift to drift transition recorded along the autochthonous western margin of Laurentia. If these two cratons were ever contiguous, separation occurred by c700-800 Ma. -Authors
AB - Metamorphosed supracrustal rocks in the central Ross Sea sector of the Transantarctic Mountains are of Neoproterozoic age and not Cambrian. They include pillow basalts with a mantle separation age of 700-800 Ma. In the Sklelton glacier area, these rocks experienced two strong phases of deformation that produced folds and associated foliations. Both rocks and structures are cut by a 551±4 Ma unfoliated quartz syenite (late Neoproterozoic). The deformation and limited geochemical data suggest an active Antarctic plate margin whose late Neoproterozoic history is markedly different from that of the temporally equivalent rift to drift transition recorded along the autochthonous western margin of Laurentia. If these two cratons were ever contiguous, separation occurred by c700-800 Ma. -Authors
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UR - http://www.scopus.com/inward/citedby.url?scp=0027493701&partnerID=8YFLogxK
M3 - Chapter
AN - SCOPUS:0027493701
VL - 150
SP - 677
EP - 682
BT - Journal - Geological Society (London)
ER -