A mechanism for decoupling within the oceanic lithosphere revealed in the Troodos Ophiolite

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doi: 10.1038/374232a0
Authors:Agar, Susan M.; Klitgord, Kim D.
Author Affiliations:Primary:
Northwestern University, Evanston, IL, United States
Other:
U. S. Geological Survey, United States
Volume Title:Nature (London)
Source:Nature (London), 374(6519), p.232-238. Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028-0836
Publication Date:1995
Note:In English. 61 refs.; illus., incl. sects., geol. sketch maps
Summary:A kinetic model is presented for the generation of linked, rift-bounding faults and sub-horizontal decoupling surfaces during sea-floor spreading. Low-strain intracrustal decoupling in the brittle regime at the dyke-pluton transition is inherent to the model, which contrasts with extension models involving a high-strain, low-angle shear zone that detaches along the brittle-ductile transition. The model for this generation of multiple, horizontal decoupling horizons linked by planar normal faults shows new possibilities for the kinematic and rheological significance of seismic reflectors in oceanic lithosphere. [R.K.H.]
Subjects:Cross sections; Crust; Decoupling; Deformation; Dikes; Faults; Gabbros; Igneous rocks; Intrusions; Kinematics; Lithosphere; Mechanical properties; Mechanism; Normal faults; Oceanic crust; Ophiolite complexes; Plutonic rocks; Polyphase processes; Rheology; Shear zones; Sheeted dikes; Spreading centers; Structural analysis; Troodos Ophiolite; Windows; Asia; Cyprus; Middle East; Agros Window
Abstract Numbers:95M/4773
Record ID:1995028516
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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