Models of fracture orientation at oblique spreading centres

Tuckwell, G.W., Bull, J.M. and Sanderson, D.J. (1996) Models of fracture orientation at oblique spreading centres. Journal of Geological Society, 153, (2), 185-189. (doi:10.1144/gsjgs.153.2.0185).


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Three models are proposed for the orientation of extensional faults and dykes at mid-ocean ridges based on their relationship to the ridge axis and the relative plate separation vector. These models predict four ridge geometries allowing them to be tested by orientation data from 17 different sites within the Earth's oceans. A transtensional model is shown to be generally applicable to the structure of mid-ocean ridges, with special conditions required for a departure from it. Spreading rate influences ridge geometry with intermediate and fast spreading ridges more likely to have an orthogonal spreading geometry, which is an end member case of the transtensional model

Item Type: Article
Digital Object Identifier (DOI): doi:10.1144/gsjgs.153.2.0185
ISSNs: 0016-7649
Keywords: Mid-ocean ridges, structural geology, transtension, spreading centres, faults
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
G Geography. Anthropology. Recreation > GC Oceanography
Q Science > QE Geology
Divisions : University Structure - Pre August 2011 > School of Civil Engineering and the Environment
University Structure - Pre August 2011 > School of Ocean & Earth Science (SOC/SOES)
ePrint ID: 76144
Accepted Date and Publication Date:
April 1996Published
Date Deposited: 11 Mar 2010
Last Modified: 31 Mar 2016 13:09

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