Evidence for sinistral shear associated with the emplacement of the early Devonian Etive dyke swarm

Autor:	D. H. W. Hutton, George A. Morris
Rok vydání:	1993
Předmět:	Intrusion Sinistral and dextral Shear (geology) Swarm behaviour Geology Petrology Seismology Devonian
Zdroj:	Scottish Journal of Geology. 29:69-72
ISSN:	2041-4951 0036-9276
DOI:	10.1144/sjg29010069
Popis:	Synopsis Examination of dykes in a c. 25 km2 area of the Caledonoid Etive dyke swarm (c. 400 Ma) reveals from matching contact re-entrants, oblique dyke offshoots, asymmetric dyke terminations, oblique bridges and actual dated fault displacements, that sinistral shear was associated with the dyke emplacement mechanisms. Larger scale en-echelon and stepping patterns confirm that sinistral shear was an important component in the intrusion of the swarm as a whole.
Databáze:	OpenAIRE
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