K. Boronkay et T. Doutsos, TRANSPRESSION AND TRANSTENSION WITHIN DIFFERENT STRUCTURAL LEVELS IN THE CENTRAL AEGEAN REGION, Journal of structural geology, 16(11), 1994, pp. 1555-1573
In the central Aegean region, shortening structures within the Miocene
molasse are known since long ago. Nevertheless recently, most authors
have recognized extensional structures within Middle to Upper Miocene
granitoids, proposing a Basin and Range type model for the Late Cenoz
oic evolution of the area. To resolve this problem, structural mapping
and mesoscopic analysis of 900 faults sampled from 12 islands have be
en carried out. Late orogenic uplift of the central Aegean region is t
he result of a continuous convergence and indentation of the Pelagonia
n plate by the Apulian plate, that took place throughout the Miocene.
Formation of core-complexes can be associated with: (a) large oblique-
upthrusts, (b) steeply dipping strike-slip faults, and (c) low-angle n
ormal faults. The latter are produced by low, multidirectional extensi
on, which has affected small crustal regions as adjacent areas underwe
nt transpression. In the late stages of collision the overthickened cr
ust began to collapse due to transtension which was replaced by extens
ion caused by the roll-back of the Hellenic subduction zone in the Low
er Pliocene time. This extensional regime has lasted until the present
day.