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Synorogenic eocene leucogranite magmatism in the southern menderes massif and its tectonic significance
Date
2015-04-06
Author
Bozkurt, Erdin
Quentin G, Crowley
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Güney Menderes Masifi’nde üst düzeylerin güneye hareket ettiği normal bileşenli Güney Menderes makaslama zonunun (GMMZ) taban bloğunda yer alan ortognayslar ile onları yapısal olarak üzerleyen metasedimanlar lökogranit kütleleri tarafından kesilirler. Bu lökogranit kütlelerinden birisi geç Orta Eosen (U-Pb zirkon yaşı) yaşındadır. Bu veri GMMZ’ndaki sinorojenik normal hareketin başlama yaşı olarak yorumlanmıştır. En yaşlı uyumsuz sedimanlar masifin erken Miyosen’de yüzeye çıktığını göstermektedir. Ortognasylar üstten normal bileşenli GMMS, alttan ise bir bindirme fayı (Büyük Menderes bindirme fayı, BMBF) ile sınırlanırlar; bu kayaçlar üst düzeylerin KKD’ya hareket ettiği sıkışmalı üst düzeylerin GGB’ya hareketini veren genişlemeli fabrikler olmak üzere iki farklı yapı sunarlar. Bu yapıların dağılımı ve ilişkileri ile ArAr mika yaşları iki farklı yöne hareket veren fabriklerin mekan ve zamanda birlikte geliştiklerini önermektedir. Dolayısıyla, yapısal ve jeokronolojik veriler ışığında: (i) normal bileşenli GMMZ’nun yeniden hareket kazanmış bir bindirme fayı, (ii) ortognayslar ise yeniden mobilize olmuş Prekambriyen granitlerinden oluşan ve kuzeye doğru hareket eden bir ekstrüzyon kaması şeklinde yorumlanmıştır. Bu modelde, ortognayslar bir gnays domunun yüzeydeki çekirdeğini temsil ederler.
Subject Keywords
Lökogranit
,
Sinorojenik genişleme
,
Ekstrüzyon kaması
,
Gnays domu
,
Menderes Masif
,
Leucogranite
,
Synorogenic extension
,
Extrusion wedge
,
Gneiss dome
,
Menderes Massif
URI
https://hdl.handle.net/11511/87651
https://www.jmo.org.tr/etkinlikler/kurultay/etkinlik_bildirileri_detay.php?etkinlikkod=106&bilkod=3116
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Granitoid rocks of the southern Menderes Massif, SW Turkey include widespread possibly Ediacaran high-grade granitic orthogneisses and younger (Tertiary) sheets, sills and/or dikes of variably deformed tourmaline-bearing leucogranites. The latter are confined to the immediate footwall of the regional-scale ductile southern Menderes shear zone. Although both sets of granitoid rocks are essentially calc-alkaline and peraluminous, the syn- to post-collisional tourmaline-bearing leucogranites are chemically dis...
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E. Bozkurt and C. Quentin G, “Synorogenic eocene leucogranite magmatism in the southern menderes massif and its tectonic significance,” 2015, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/87651.