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Fast rift propagation at a slow-spreading ridge

Martin C. Kleinrock, Brian E. Tucholke, Jian Lin and Maurice A. Tivey
Fast rift propagation at a slow-spreading ridge
Geology (Boulder) (July 1997) 25 (7): 639-642

Abstract

Bathymetric, magnetic, gravity, and morphologic data from the flank of the slow-spreading Mid-Atlantic Ridge reveal obliquely oriented features that offset magnetic isochrons and morphological patterns within individual ridge segments. These features form angles of approximately 10 degrees -40 degrees with the isochrons and are inferred to result from rift propagation at rates several times the spreading rate, representing the fastest propagators yet observed at a slow-spreading ridge. These fast propagators appear to have formed as a result of tectonic extension migrating along ridge segments as the segments change from more magmatic to less magmatic periods of spreading.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 25
Serial Issue: 7
Title: Fast rift propagation at a slow-spreading ridge
Affiliation: Vanderbilt University, Department of Geology, Nashville, TN, United States
Pages: 639-642
Published: 199707
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 27
Accession Number: 1997-056021
Categories: Solid-earth geophysicsOceanography
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Woods Hole Oceanogr. Inst., Contrib. No. 9360
Illustration Description: illus. incl. sketch maps
N25°40'00" - N26°19'60", W47°30'00" - W46°00'00"
Secondary Affiliation: Woods Hole Oceanographic Institution, Woods Hole, MA, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 199718
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