Deep crustal and local rheological controls on the siting and reactivation of fault and shear zones, northeastern Newfoundland

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doi: 10.1144/gsjgs.154.1.0117
Authors:D'Lemos, R. S.; Schofield, D. I.; Holdsworth, R. E.; King, T. R.
Author Affiliations:Primary:
Oxford Brookes University, Geology & Carography Division, Oxford, United Kingdom
University of Durham, United Kingdom
Durham University, United Kingdom
Volume Title:role of basement reactivation in continental deformation
Volume Authors:Butler, R. W. H., editor; Lloyd, G. E.
Source:Journal of the Geological Society of London, Vol.154 (Part 1), p.117-121; Discussion meeting on The role of basement reactivation in continental deformation, Burlington House, United Kingdom, March 6-7, 1996, edited by R. W. H. Butler, R. E. Holdsworth and G. E. Lloyd. Publisher: Geological Society of London, London, United Kingdom. ISSN: 0016-7649
Publication Date:1997
Note:In English. 24 refs.; block diag., sect., sketch map
Summary:The siting of an ∼ 25 km wide, transpressive, high-strain zone at the E margin of the Gander zone of NE Newfoundland corresponds with the trace of a fundamental contact between two Gondwanan basement blocks displaced sinistrally relative to one another during Silurian orogenesis. The authors consider that granite magmas exploited shear zones within the crust to aid ascent, and in so doing enhanced local deformation; cessation of magma supply and/or cooling of magmas within conduits caused deformation to relocate elsewhere. [R.A.H.]
Subjects:Crust; Deformation; Emplacement; Fault zones; Faults; Kinematics; Lower crust; Magmas; Reactivation; Rheology; Shear zones; Strain; Transpression; Canada; Eastern Canada; Gander Zone; Newfoundland; Newfoundland Island; Northeastern Newfoundland
Abstract Numbers:97M/3011
Record ID:1997056634
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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