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

Toksoy-Koksal F., Goncuoglu M., Yaliniz M.

INTERNATIONAL GEOLOGY REVIEW, cilt.43, sa.7, ss.624-639, 2001 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 43 Sayı: 7
  • Basım Tarihi: 2001
  • Doi Numarası: 10.1080/00206810109465037
  • Dergi Adı: INTERNATIONAL GEOLOGY REVIEW
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.624-639
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

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)).