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The AAPG/Datapages Combined Publications Database

AAPG Special Volumes

Abstract


Pub. Id: A156 (1989)

First Page: 471

Last Page: 500

Book Title: M 46: Extensional Tectonics and Stratigraphy of the Previous HitNorthNext Hit Atlantic Margins

Article/Chapter: Evolution of Previous HitNorthNext Hit Previous HitSeaNext Hit Rift System: Chapter 31: Previous HitNorthNext Hit Previous HitSeaNext Hit and Barents Shelf

Subject Group: Structure, Tectonics, Paleostructure

Spec. Pub. Type: Memoir

Pub. Year: 1989

Author(s): P. A. Ziegler (*), B. van Hoorn

Abstract:

The Mesozoic Previous HitNorthNext Hit Previous HitSeaNext Hit rift forms an integral part of the Arctic-Previous HitNorthNext Hit Atlantic rift system. Rifting activity in the Previous HitNorthNext Hit Previous HitSeaNext Hit commenced during the earliest Triassic, peaked during the Late Jurassic-earliest Cretaceous, and terminated during the Paleocene. During the early Middle Jurassic a major rift dome developed in the central Previous HitNorthNext Hit Previous HitSeaNext Hit. Geophysical data indicate an important discrepancy between upper and lower crustal thinning across the Previous HitNorthNext Hit Previous HitSeaTop rift system. This raises doubts about the concept that during rifting the crust is thinned by mechanical stretching only. It is argued that during the rifting process the Moho-discontinuity can be seriously destabilized.

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