Al-in-hornblende thermobarometry and Sr-Nd-O-Pb isotopic compositions of the early miocene Alaçam granite in NW Anatolia (Turkey)

Altuğ HASÖZBEK, (Dokuz Eylül Üniversitesi, Meslek Yüksek Okulu , Doğal Taş Teknolojisi, İzmir, Türkiye)
Burhan ERDOĞAN, (Dokuz Eylül Üniversitesi, Mühendislik Fakültesi, Jeoloji Mühendisliği Bölümü, İzmir ,Türkiye)
Muharrem SATIR, (Universität Tübingen, Institut für Geowissenschaften, Wilhelmstrasse 56, D-72074 Tübingen, Germany)
Wolfgang SIEBEL, (Universität Tübingen, Institut für Geowissenschaften, Wilhelmstrasse 56, D-72074 Tübingen, Germany)
Erhan AKAY, (Dokuz Eylül Üniversitesi, Mühendislik Fakültesi, Jeoloji Mühendisliği Bölümü, İzmir ,Türkiye)
Güllü Deniz DOĞAN, (Hacettepe Üniversitesi, Mühendislik Fakültesi, Jeoloji Mühendisliği Bölümü, Ankara, Türkiye)
Heinrich TAUBALD (Universität Tübingen, Institut für Geowissenschaften, Wilhelmstrasse 56, D-72074 Tübingen, Germany)
Turkish Journal of Earth Sciences
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Yıl: 2012 Cilt: 21 Sayı: 1 Sayfa Aralığı: 37 - 52 Metin Dili: Türkçe İndeks Tarihi: 29-07-2022

Al-in-hornblende thermobarometry and Sr-Nd-O-Pb isotopic compositions of the early miocene Alaçam granite in NW Anatolia (Turkey)

Öz:
Özet: Neo-Tetis okyanusunun kapanmasını izleyen Anatolid-Torid Platformu’nun Sakarya Kıtası ile progresif çarpışması sırasında ve sonrasında, KB Anadolu’da yaygın bir magmatizma meydana gelmiştir. Bu magmatizma, Batı Anadolu’da yer alan kuzey Menderes Masifi boyunca KB doğrultulu bir magmatik kuşak ortaya çıkarmaktadır. Bölgenin karmaşık jeodinamik evriminden dolayı, granitoidlerin yerleşim derinliği, halen tartışmalıdır. Bu çalışmada, Erken Miyosen yaşlı Alaçam granitinin Al-hornblend barometresi sonuçları ve Sr-Nd-Pb-O izotop bileşimleri sunulmaktadır. Elde edilen sonuçlar, Alaçam granitinin, önceki çalışmaların aksine, kabuğun sığ kesimlerinde (4.7±1.6 km) yerleştiğini ve önerilen kabuğun derin, elastik-plastik deformasyon sınırında gerçekleşen bir sokulum olmadığını belirtmektedir. Bununla beraber, literatürün yeniden değerlendirilmesiyle, Alaçam granitinin ve bölgedeki diğer Erken Miyosen granitoidlerinin yerleşim mekanizmasının yeniden incelenmesine neden olmuştur. Alaçam Graniti’nin birincil izotopik değerleri; 87Sr/86Sr(I)= 0.70865–0.70915, eNd(I)= –5.8 to –6.4, δ18O= 9.5–10.5, 206Pb/204Pb= 18.87–18.90’dır. Bu izotop verileri asimilasyonun baskın olduğu bir kabuksal kristallenmeyi ve granitin daha yaşlı bir orta kabuk köken kayasından türediğini göstermektedir.
Anahtar Kelime:

Konular: Jeoloji

Erken miyosen yaşlı Alaçam Graniti'nin (KB Anadolu-Türkiye) al-hornblend termobarometresi ve Sr-Nd-Pb-O izotop bileşimleri

Öz:
Abstract: During and aft er the closure of the Neo-Tethyan Ocean and progressive collision of the Tauride-Anatolide Platform with the Sakarya Continent, widespread magmatism occurred in NW Anatolia. This magmatism is manifested in a NW-trending belt along the northern border of the Menderes Massif. Due to the complex geodynamic setting of this region, the exact emplacement depth of the granitoids is still a matter of debate. Here we present Al-in-hornblende barometrical data and Sr-Nd-Pb isotope compositions of the Early Miocene Alaçam granite. The results imply a shallow emplacement depth of this granite (4.7±1.6 km) in contrast to previous studies which suggested emplacement along the brittle-ductile boundary of the crust. Furthermore, an evaluation of literature data let us reconsider the general emplacement mechanism of the Alaçam and other Early Miocene granitoids in the region. Initial isotopic signatures of the Alaçam granite are 87Sr/86Sr(I)= 0.70865–0.70915, eNd(I)= –5.8 to –6.4, δ18O= 9.5–10.5, 206Pb/204Pb isotope ratios vary between 18.87 and 18.90. Th ese features indicate an assimilation-dominated crustal crystallization and melt derivation from an older middle crustal protolith.
Anahtar Kelime:

Konular: Jeoloji
Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
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APA HASÖZBEK A, ERDOĞAN B, SATIR M, SIEBEL W, AKAY E, DOĞAN G, TAUBALD H (2012). Al-in-hornblende thermobarometry and Sr-Nd-O-Pb isotopic compositions of the early miocene Alaçam granite in NW Anatolia (Turkey). , 37 - 52.
Chicago HASÖZBEK ALTUĞ,ERDOĞAN Burhan,SATIR Muharrem,SIEBEL Wolfgang,AKAY ERHAN,DOĞAN Güllü Deniz,TAUBALD Heinrich Al-in-hornblende thermobarometry and Sr-Nd-O-Pb isotopic compositions of the early miocene Alaçam granite in NW Anatolia (Turkey). (2012): 37 - 52.
MLA HASÖZBEK ALTUĞ,ERDOĞAN Burhan,SATIR Muharrem,SIEBEL Wolfgang,AKAY ERHAN,DOĞAN Güllü Deniz,TAUBALD Heinrich Al-in-hornblende thermobarometry and Sr-Nd-O-Pb isotopic compositions of the early miocene Alaçam granite in NW Anatolia (Turkey). , 2012, ss.37 - 52.
AMA HASÖZBEK A,ERDOĞAN B,SATIR M,SIEBEL W,AKAY E,DOĞAN G,TAUBALD H Al-in-hornblende thermobarometry and Sr-Nd-O-Pb isotopic compositions of the early miocene Alaçam granite in NW Anatolia (Turkey). . 2012; 37 - 52.
Vancouver HASÖZBEK A,ERDOĞAN B,SATIR M,SIEBEL W,AKAY E,DOĞAN G,TAUBALD H Al-in-hornblende thermobarometry and Sr-Nd-O-Pb isotopic compositions of the early miocene Alaçam granite in NW Anatolia (Turkey). . 2012; 37 - 52.
IEEE HASÖZBEK A,ERDOĞAN B,SATIR M,SIEBEL W,AKAY E,DOĞAN G,TAUBALD H "Al-in-hornblende thermobarometry and Sr-Nd-O-Pb isotopic compositions of the early miocene Alaçam granite in NW Anatolia (Turkey)." , ss.37 - 52, 2012.
ISNAD HASÖZBEK, ALTUĞ vd. "Al-in-hornblende thermobarometry and Sr-Nd-O-Pb isotopic compositions of the early miocene Alaçam granite in NW Anatolia (Turkey)". (2012), 37-52.
APA HASÖZBEK A, ERDOĞAN B, SATIR M, SIEBEL W, AKAY E, DOĞAN G, TAUBALD H (2012). Al-in-hornblende thermobarometry and Sr-Nd-O-Pb isotopic compositions of the early miocene Alaçam granite in NW Anatolia (Turkey). Turkish Journal of Earth Sciences, 21(1), 37 - 52.
Chicago HASÖZBEK ALTUĞ,ERDOĞAN Burhan,SATIR Muharrem,SIEBEL Wolfgang,AKAY ERHAN,DOĞAN Güllü Deniz,TAUBALD Heinrich Al-in-hornblende thermobarometry and Sr-Nd-O-Pb isotopic compositions of the early miocene Alaçam granite in NW Anatolia (Turkey). Turkish Journal of Earth Sciences 21, no.1 (2012): 37 - 52.
MLA HASÖZBEK ALTUĞ,ERDOĞAN Burhan,SATIR Muharrem,SIEBEL Wolfgang,AKAY ERHAN,DOĞAN Güllü Deniz,TAUBALD Heinrich Al-in-hornblende thermobarometry and Sr-Nd-O-Pb isotopic compositions of the early miocene Alaçam granite in NW Anatolia (Turkey). Turkish Journal of Earth Sciences, vol.21, no.1, 2012, ss.37 - 52.
AMA HASÖZBEK A,ERDOĞAN B,SATIR M,SIEBEL W,AKAY E,DOĞAN G,TAUBALD H Al-in-hornblende thermobarometry and Sr-Nd-O-Pb isotopic compositions of the early miocene Alaçam granite in NW Anatolia (Turkey). Turkish Journal of Earth Sciences. 2012; 21(1): 37 - 52.
Vancouver HASÖZBEK A,ERDOĞAN B,SATIR M,SIEBEL W,AKAY E,DOĞAN G,TAUBALD H Al-in-hornblende thermobarometry and Sr-Nd-O-Pb isotopic compositions of the early miocene Alaçam granite in NW Anatolia (Turkey). Turkish Journal of Earth Sciences. 2012; 21(1): 37 - 52.
IEEE HASÖZBEK A,ERDOĞAN B,SATIR M,SIEBEL W,AKAY E,DOĞAN G,TAUBALD H "Al-in-hornblende thermobarometry and Sr-Nd-O-Pb isotopic compositions of the early miocene Alaçam granite in NW Anatolia (Turkey)." Turkish Journal of Earth Sciences, 21, ss.37 - 52, 2012.
ISNAD HASÖZBEK, ALTUĞ vd. "Al-in-hornblende thermobarometry and Sr-Nd-O-Pb isotopic compositions of the early miocene Alaçam granite in NW Anatolia (Turkey)". Turkish Journal of Earth Sciences 21/1 (2012), 37-52.
Sayfa Oluşturulma Tarihi
22-04-2024 17:15

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