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Tectonic evolution of the Greenland-Scotland Ridge during the Paleogene; new constraints

L. Geoffroy, F. Bergerat and J. Angelier
Tectonic evolution of the Greenland-Scotland Ridge during the Paleogene; new constraints
Geology (Boulder) (July 1994) 22 (7): 653-656

Abstract

Understanding the early history of the North Atlantic Ocean is made difficult by a lack of detailed tectonic information from its margins. Analysis of brittle deformation in the basalts of the Faeroe Islands constrains ages, types, and orientations of tectonic movements related to the North Atlantic Paleogene kinematic evolution. Three synmagmatic tectonic episodes affected the Faeroe area between chrons 26r and 24, followed by postmagmatic transtension. Changes in trends of minimum horizontal stress are consistent with variations in the directions of North Atlantic early opening, and this tectonic history is correlated with the Greenland drift episodes in Paleogene time. Although transtensional strike-slip faulting dominated, unexpected reverse faulting with N60 degrees E-trending compression occurred between chrons 25 and 24, corresponding to a major kinematic change in the Labrador Sea opening.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 22
Serial Issue: 7
Title: Tectonic evolution of the Greenland-Scotland Ridge during the Paleogene; new constraints
Affiliation: Universite Pierre et Marie Curie, Laboratoire de Tectonique Quantitative, Paris, France
Pages: 653-656
Published: 199407
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 22
Accession Number: 1994-038200
Categories: Solid-earth geophysicsOceanography
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sketch maps
N61°19'60" - N62°30'00", W08°00'00" - W06°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 199418
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