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Petrochemistry of the Oyaca-Kedikayasi (Ankara) dacites as evidence for the post-collisional tectonic evolution of north-central Anatolia, Turkey
Date
1999-07-01
Author
Bozkurt, Erdin
Winchester, JA
Holland, G
Beyhan, A
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The Lower Miocene Oyaca and Kedikayasi dacite stocks, unconformably overlain by Plio-Quaternary sedimentary and volcanic rocks, intrude a southward-verging imbricate thrust zone within the izmir-Ankara-Erzincan Suture Zone (IAESZ), approximately 50 km SW of Ankara. These stocks crop out as two petrographically distinguishable plagioclase, hornblende and biotite-phyric dacites. Xenoliths petrographically similar to the Kedikayasi dacite occur within the Oyaca stock, suggesting that the Kedikayasi stock is older; if so, the venting from the magma chamber may have removed the upper, more evolved magma first.
Subject Keywords
Geology
,
Ankara
,
Central Anatolia
,
Turkey
,
Dacites
,
Post-collisional
URI
https://hdl.handle.net/11511/39587
Journal
GEOLOGICAL JOURNAL
DOI
https://doi.org/10.1002/(sici)1099-1034(199907/09)34:3<223::aid-gj823>3.0.co;2-b
Collections
Department of Geological Engineering, Article
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E. Bozkurt, J. Winchester, G. Holland, and A. Beyhan, “Petrochemistry of the Oyaca-Kedikayasi (Ankara) dacites as evidence for the post-collisional tectonic evolution of north-central Anatolia, Turkey,”
GEOLOGICAL JOURNAL
, pp. 223–231, 1999, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39587.