TY - JOUR
TI - Geodynamic significance of the Santorini Detachment System (Cyclades, Greece)
AU - Schneider, D.A.
AU - Grasemann, B.
AU - Lion, A.
AU - Soukis, K.
AU - Draganits, E.
JO - Terra Nova
PY - 2018
VL - 30
TODO - 6
SP - 414-422
PB - Wiley-Blackwell Publishing Ltd
SN - 0954-4879, 1365-3121
TODO - 10.1111/ter.12357
TODO - argon-argon dating;  detachment fault;  foliation;  fossil;  geochronology;  geodynamics;  marble;  mica;  Miocene;  syncline;  Triassic;  uranium series dating;  zircon, Greece;  Santorini [Southern Aegean];  Southern Aegean
TODO - We present field and geochronologic evidence for a Miocene top-to-SSE detachment system on Santorini, which exhumed the Cycladic Blueschist Unit (CBU) below a package of low-grade Upper Triassic marbles that contain well-preserved Megalodon fossils forming a syncline with metaflysch in the core. White mica bundles from the mylonitic foliation in the CBU yield 40Ar/39Ar dates of 25–19 Ma and zircon (U–Th)/He dates are 11–8 Ma. A weakly foliated granitic intrusion that cross-cuts the CBU is 8.5 Ma based on zircon U–Pb geochronology. Detrital white mica from the metaflysch yields Jurassic to early Palaeogene single grain 40Ar/39Ar dates, with a dominant Palaeocene signature. Zircon (U–Th)/He dating similarly reveals dispersed ages between 36 and 15 Ma suggesting Miocene metamorphic temperatures were insufficient (<200°C) to completely reset all of the zircon cooling ages. The low-grade rocks of the hangingwall above the newly discovered Miocene low-angle Santorini Detachment System most likely belong to the Pelagonian zone with a Triassic carbonate platform discordantly transgressed by an Eocene flysch deposit. © 2018 John Wiley & Sons Ltd
ER -