Τίτλος:
Along-strike consistency of an extensional detachment system, West Cyclades, Greece
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
The Lavrion district of the Attica Peninsula, Greece, exposes the West Cycladic Detachment System (WCDS), a low-angle crustal-scale extensional fault system separating tectonostratigraphic units of the Cycladic Blueschist Unit. New multiple single-grain fusion and step-heated white mica 40Ar/39Ar ages integrated with existing (U–Th)/He ages and independent paleothermometry resolves a syn- to post-orogenic deformation history. A structurally higher unit records Oligocene greenschist facies deformation that evolved into brittle conditions by the middle Miocene, and shares a similar history to Serifos at the southern end of the detachment system. The structurally lowest unit remained ductile until the late Miocene, preserving pervasive post-orogenic structures, similar to along-strike structures at the centre, deepest part of the fault. The similarities of structural styles and the timing of deformation across > 150 km of strike length of the detachment system indicates tens of kilometers of offset and extraordinary potential for correlating observations along Cycladic-style detachment systems. © 2019 John Wiley & Sons Ltd
Συγγραφείς:
Coleman, M.
Dubosq, R.
Schneider, D.A.
Grasemann, B.
Soukis, K.
Εκδότης:
Wiley-Blackwell Publishing Ltd
Λέξεις-κλειδιά:
argon-argon dating; deformation mechanism; detachment fault; extensional tectonics; greenschist facies; paleotemperature; strike-slip fault; structural geology; tectonic evolution; tectonic setting; tectonostratigraphy, Aegean Islands; Attica; Cyclades; Greece; Lavrion
