Güneydoğu Anadolu orojenik kuşağında Maden grubunun tektonik konumu ve jeolojik önemi


YİĞİTBAŞ E. , GENC Ş. C. , YILMAZ Y.

A. Suat Erk Jeoloji Simpozyumu, Ankara, Turkey, 2 - 05 September 1991, pp.251-264

  • Publication Type: Conference Paper / Full Text
  • City: Ankara
  • Country: Turkey
  • Page Numbers: pp.251-264

Abstract

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.