GEOLOGY AND PETROGRAPHY OF OYMAAÃAÇ (BEYPAZARI ANKARA) GRANITOID

Oğuz ZOROĞLU; Yusuf KADIĞOLU

Article Details

GEOLOGY AND PETROGRAPHY OF OYMAAÃAÇ (BEYPAZARI ANKARA) GRANITOID

Authors:

Oğuz ZOROĞLU | Yusuf KADIĞOLU

Publisher:

Gazi University

Journal:

Gazi University Journal of Science 2003 Vol.16 Issue 2, pp.299-308

Document Type:

Article

Publication Date:

8/2010

Document Language:

English

Document ID (Org No.):

2000430470

eISSN:

2147-1762

Abstract:

 


ABSTRACT

The study area comprises a part of the Beypazarı granitoids and is exposed in Oymaağaç and its vicinity, appoximately to 50 km south of Beypazarı (Ankara).On the basis of field observation and petrographical features, the granitoid is differentiated into Oymaağaç granodiorite, İsmailkayası granodiorite, Tavuktaşı granodiorite and Çayırpınar alkali feldspar granite. The latter forms the youngest unit, cutting all the other subunits in the form of aplitic dykes. The abudance of amphibole minerals decrease from Oymaağaç granodiorite at the rim of the pluton towards İsmailkayası and Tavuktaşı granodiorite at the inner part of the pluton respectively. Mafic microgranular enclaves are observed within Oymaağaç granodiorite, İsmailkayası granodiorite and Tavuktaşı granodiorite and their compositions change from diorite to quartz diorite and monzodiorite respectively. Acicular apatite, poiklitic megacrysts of feldspars and sharp contact with the host rock are the main common features of the mafic enclaves, suggesting magma mixing/mingling origin for the enclaves.

 

Key Words: Beypazarı, oymaağaç, granite, enclave, petrography

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Article Details

GEOLOGY AND PETROGRAPHY OF OYMAAÃAÇ (BEYPAZARI ANKARA) GRANITOID

Authors: Oğuz ZOROĞLU | Yusuf KADIĞOLU

Publisher: Gazi University

Journal: Gazi University Journal of Science 2003 Vol.16 Issue 2, pp.299-308

Document Type: Article

Publication Date: 8/2010

Document Language: English

Document ID (Org No.): 2000430470

eISSN: 2147-1762

Issues

GEOLOGY AND PETROGRAPHY OF OYMAAÃAÇ (BEYPAZARI ANKARA) GRANITOID

Authors:

Oğuz ZOROĞLU | Yusuf KADIĞOLU

Publisher:

Gazi University

Journal:

Gazi University Journal of Science 2003 Vol.16 Issue 2, pp.299-308

Document Type:

Article

Publication Date:

8/2010

Document Language:

English

Document ID (Org No.):

2000430470

eISSN:

2147-1762