Structural evolution of the Eastern Anatolian Basins: an example from collisional to postcollisional tectonic processes, Turkey

Ali YILMAZ; Hüseyin YILMAZ

Makale detayları

Structural evolution of the Eastern Anatolian Basins: an example from collisional to postcollisional tectonic processes, Turkey

Yazarlar:

Ali YILMAZ | Hüseyin YILMAZ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Earth Sciences 2019 Vol.28 Issue 3, pp.329-350

Belge Tipi:

Makale

Yayın Tarihi:

5/2019

Belge Dili:

Türkçe

Document ID (Org No.):

2000731025

Sıklık:

İki Aylık

eISSN:

1303-619X

pISSN:

1300-0985

Özet:

 

The Eastern Anatolian Basins (EABs) started to develop on a mosaic, made up of forearc deposits of the Eastern Pontide Arc (EPA), continental metamorphic rocks of the Anatolian-Iranian Platform (AIP), and obducted ophiolitic units of the North Anatolian Ophiolitic Belt (NAOB) and Southeastern Anatolian Ophiolitic Belt (SAOB). The basement rocks of the East Anatolian Region represent a continental fragment positioned between the EPA to the north and the Arabian Platform to the south. In appearance, it can be said that there are many different basins in the Eastern Anatolian Region. This paper reports on three of them that were studied as a part of  the  work,  defining  the  setting  and  structural  evolution  of  the  EABs  as  a  whole.  These  are,  from  north  to  south,  the  Oltu-Balkaya  Basin,  the  Tekman-Karayazı  Basin,  and  the  Muş  Basin.  The  EABs  started  to  develop  in  the  beginning  of  the  Maastrichtian  age  with  tectonic subsidence. They then evolved as collisional foreland basins on the AIP and ophiolitic units of the NAOB and SAOB during the Paleocene and Early Eocene period, as well. The fill of these basins is represented by basal conglomerate, shallow marine limestone, and clastic rock units. During deposition of this fill, syncollisional Paleocene peraluminous leucogranitic magmatism developed along the  Eastern  Pontides.  From  the  Middle  Eocene  to  the  Quaternary  age,  different  superimposed  postcollisional  basins  developed  over  the collisional foreland basin fill. In this time interval, a shallow marine-continental molasse deposition was accompanied with high-K calc-alkaline  volcanism,  which  may  be  attributed  to  postcollisional  magmatism  in  the  Eastern  Anatolian  Region.  As  a  result,  for  the  structural evolution of EABs, it can be said that the EABs represent a foreland basin in the Maastrichtian-Early Eocene and superimposed postcollisional basins in the Middle Eocene-Quaternary interval.

Makale detayları

Structural evolution of the Eastern Anatolian Basins: an example from collisional to postcollisional tectonic processes, Turkey

Yazarlar: Ali YILMAZ | Hüseyin YILMAZ

Yayıncı: TUBITAK

Dergi: Turkish Journal of Earth Sciences 2019 Vol.28 Issue 3, pp.329-350

Belge Tipi: Makale

Yayın Tarihi: 5/2019

Belge Dili: Türkçe

Document ID (Org No.): 2000731025

Sıklık: İki Aylık

eISSN: 1303-619X

pISSN: 1300-0985

Sayı

Yazarlar:

Ali YILMAZ | Hüseyin YILMAZ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Earth Sciences 2019 Vol.28 Issue 3, pp.329-350

Belge Tipi:

Makale

Yayın Tarihi:

5/2019

Belge Dili:

Türkçe

Document ID (Org No.):

2000731025

Sıklık:

İki Aylık

eISSN:

1303-619X

pISSN:

1300-0985