Petrology of the Kurancali phlogopitic metagabbro: An island arc-type ophiolitic sliver in the Central Anatolian Crystalline Complex

Date

2001-07-01

Author

Toksoy-Köksal, Fatma
Göncüoğlu, Mehmet Cemal
Yalınız, Mustafa Kenan

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The Kurancali metagabbro occurs as an isolated body in the central part of the Central Anatolian Crystalline Complex. It has been emplaced along a steep S-vergent thrust-plane onto the uppermost units of the Central Anatolian Metamorphics. The main body of the Kurancali metagabbro is characterized by distinct compositional layering. The layered gabbros comprise pyroxene and hornblende gabbros. Phlogopite-rich, plagioclase-hornblende gabbro occurs mainly as pegmatitic dikes intruding the layered gabbro sequence. The layered gabbros, in general, consist mainly of diopsidic augites, brown hornblendes, and plagioclase. Secondary phases are phlogopitic mica, brownish-green hornblende replacing clinopyroxenes, and fibrous, greenish actinolitic hornblende partially or completely replacing brown homblende. The primary dark micas are phlogopitic in the range of phlogopite((57-70)) and annite((30-43)). The analyzed pyroxenes are diopsidic (En(32)Fs(19)Wo(49)En(35)Fs(18)Wo(48)).

Subject Keywords

Upper-mantle, Geochemical discrimination, Subduction zones, Volcanic-rocks, Trace-elements, Central Turkey, Magma genesis, Metasomatism, Petrogenesis, Xenoliths

URI

https://hdl.handle.net/11511/32404

Journal

INTERNATIONAL GEOLOGY REVIEW

DOI

https://doi.org/10.1080/00206810109465037

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Graduate School of Natural and Applied Sciences, Article

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Citation Formats

F. Toksoy-Köksal, M. C. Göncüoğlu, and M. K. Yalınız, “Petrology of the Kurancali phlogopitic metagabbro: An island arc-type ophiolitic sliver in the Central Anatolian Crystalline Complex,” INTERNATIONAL GEOLOGY REVIEW, pp. 624–639, 2001, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32404.