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The onset of the Dead Sea Transform based on calcite age-strain analyses

P. Nuriel, R. Weinberger, Andrew R. C. Kylander-Clark, B. R. Hacker and J. P. Craddock
The onset of the Dead Sea Transform based on calcite age-strain analyses
Geology (Boulder) (May 2017) 45 (7): 587-590

Abstract

The onset and evolution of the Dead Sea transform are re-evaluated based on new in situ U-Pb dating and strain analyses of mechanically twinned calcites. Direct dating of 30 syn-faulting calcites from 10 different inactive fault strands of the transform indicates that the oceanic-to-continental plate boundary initiated between 20.8 and 18.5 Ma within an approximately 10-km-wide distributed deformation zone in southern Israel. Ages from the northern Dead Sea transform (17.1-12.7 Ma) suggest northward propagation and the establishment of a well-developed >500-km-long plate-bounding fault in 3 m.y. The dominant horizontal shortening direction recorded in the dated twinned calcites marks the onset of left-lateral motion along the evolving plate boundary. The observed changes in the strain field within individual fault strands cannot be simply explained by local "weakening effects" along strands of the Dead Sea transform or by gradual changes in the Euler pole through time.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 45
Serial Issue: 7
Title: The onset of the Dead Sea Transform based on calcite age-strain analyses
Affiliation: Israel Geological Survey, Jerusalem, Israel
Pages: 587-590
Published: 20170501
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 32
Accession Number: 2017-042138
Categories: Solid-earth geophysicsGeochronology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: GSA Data Repository item 2017194
Illustration Description: illus. incl. sect., geol. sketch map
N31°04'60" - N31°45'00", E35°19'60" - E35°34'60"
Secondary Affiliation: Ben-Gurion University, ISR, IsraelUniversity of California at Santa Barbara, USA, United StatesMacalester College, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 201723
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