Research Information System
A. Suat Erk Jeoloji Simpozyumu, Ankara, Turkey, 2 - 05 September 1991, pp.251-264, (Full Text)
The volcanosedimentary units of Late Meso-
zoic–Tertiary age that outcrop in the Southeast Anatol-
ian orogenic belt are commonly referred to as the Mad-
en complex. There is a long-lasting controversy over its
definition, age, stratigraphic and structural position,
and the origin, and thus, the orogenic evolution. To
solve this problem, large strips across the Southeast
Anatolian orogenic belt have been studied extensively,
and different rock groups which were regarded pre-
viously as the Maden unit have been differentiated.
Their major characteristics and differences have been
identified. The Maden unit sensu stricto is here rede-
fined as a volcanosedimentary succession of Middle
Eocene age representing a short-lived back-arc basin
which reached the stage of an embryonic ocean. Pres-
ently, the Maden group occurs mainly within the lower
nappe stack of the nappe zone of the Southeast Anatol-
ian orogen. It rests stratigraphically on an amalgamated
nappe package consisting of the different metamorphic
tectonic units and, in turn, is overlain tectonically by
the upper nappe units.