Mechanical control of oceanic plate boundary geometry
Tuckwell, George W., Bull, Jonathan M. and Sanderson, David J. (1999) Mechanical control of oceanic plate boundary geometry. Tectonophysics, 313, (3), 265-270. (doi:10.1016/S0040-1951(99)00206-1).
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We present a global analysis of oceanic plate boundary geometry based on the mechanics of relative plate motion at mid-ocean ridges and transform faults. If the observed geometry formed by the first-order segmentation of oceanic plate boundaries represents a state of mechanical equilibrium, we find the relative strength of spreading ridges, and their bounding transform faults to be fundamental to its organisation. A consideration of power dissipation along adjacent lengths of spreading ridge and transform fault leads to a simple relationship between spreading obliquity and relative strength. Increased spreading rate is found to decrease the strength of spreading segments relative to transform faults. Proximity to an active hotspot reduces the relative strength of spreading ridges.
|Keywords:||mid-ocean ridge, transform fault, hotspots, spreading rate|
|Subjects:||Q Science > QE Geology
T Technology > TA Engineering (General). Civil engineering (General)
|Divisions:||University Structure - Pre August 2011 > School of Civil Engineering and the Environment
|Date Deposited:||11 Mar 2010|
|Last Modified:||25 Apr 2013 20:42|
|Contributors:||Tuckwell, George W. (Author)
Bull, Jonathan M. (Author)
Sanderson, David J. (Author)
|Date:||15 November 1999|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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