Margins declassified
Article Abstract:
The binary classification of continental margins as either volcanic or non-volcanic oversimplifies the Earth's activities, and cannot account for many margins. New research suggests that margin of the US East Coast is neither non-volcanic or volcanic, in the hot-spot sense of the term. While the dipping reflectors and high-velocity dip layer would suggest a volcanic margin, there is no evidence of hot-spot activity. A better understanding of the geological boundaries of the Earth are as essential to the knowledge of margins as volcanic activity, as the East Coast margin shows.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
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Hot, fat and falling apart?
Article Abstract:
B. Taylor and colleagues have shown that the ruptures that cause the rifting of continental lithosphere occur through a sort of progressive unzipping rather than a synchronous rupturing along a great length of the lithosphere. The westward narrowing of the western Woodlark basin, associated with the progressive termination of older sea-floor magnetic lineations, has been presented as evidence of this process. The propagation started 5 million years ago, taking an east to west direction.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
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Analogies to oceanic behaviour in the continental breakup of the western Woodlark basin
Article Abstract:
The Woodlark basin northeast of Papua New Guinea provides a brief view of active rifting and continental breakup. Continental breakup, rifting and the formation of oceanic lithosphere usually involve rupture caused by a rift tip. Several tectonic elements in the western Woodlark intracontinental system are recognized. A kinematic development which can be seen as an extrapolation of oceanic tectonics is also noted.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
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