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The AAPG/Datapages Combined Publications Database

AAPG Special Volumes

Abstract


Pub. Id: A106 (1969)

First Page: 724

Last Page: 733

Book Title: M 12: North Atlantic: Geology and Continental Drift

Article/Chapter: Northeast-Trending Faults of Scotland and Ireland, and Chronology of Displacements: Chapter 53: Late Orogenic Stratigraphy and Structure

Subject Group: Geologic History and Areal Geology

Spec. Pub. Type: Memoir

Pub. Year: 1969

Author(s): Wallace S. Pitcher (2)

Abstract:

The NE-trending faults of Scotland and Ireland form a structurally and chronologically coherent system of steep fractures on which there have been repeated movements, all of which exerted some control on sedimentation. At about late Early Devonian-early Middle Devonian time, important displacements variously combined dip slip of southeast throw with sinistral strike slip. Of the several periods of reactivation in which relatively minor strike slip commonly can be proved, the most important were during the Carboniferous. In some units of the system, pre-Devonian activity is suspected, and the Highland Boundary fault, in particular, marks the site of a long-established lineament which has acted as the locus of movement since pre-Arenigian time. The courses of several great aults are traced beyond Scotland, especially into Ireland, where, off the west coast, the fractures may converge into an important compound line. It should be sought on the shelf--especially in view of the possible correlation with the Cabot fault zone of eastern Canada.

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