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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract

Volume: 61 (1977)

Issue: 9. (September)

First Page: 1483

Last Page: 1492

Title: Continental Slope and Upper Rise off Western Nova Scotia and Georges Bank

Author(s): Elazar Uchupi, R. D. Ballard, J. P. Ellis (2)

Abstract:

The continental margin from western Nova Scotia to the western edge of Georges Bank consists of two sedimentary wedges, one beneath the shelf and the other beneath the continental rise. Most of the upper rise sequence was deposited by turbidity currents modified to some extent by bottom currents. Off Nova Scotia, vertical migration of salt has formed a ridge along the entire length of the Nova Scotia Rise. The diapiric ridge terminates southwestward against a basement high beneath the continental slope south of Georges Bank. This basement high initially blocked the southwestern flow of the invading Tethys sea, but as the Atlantic basin continued to widen and deepen, the high was breached and evaporite deposition ceased.

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