Civanadağ Bölgesi (Güğü-Balıkesir) Piroklastik Kayaçlarının Jeolojik, Petrografik ve Jeokimyasal Özellikleri, KB-Türkiye

Murat Kalkan; Yahya Ozpinar

doi:10.29002/asujse.331754

EN TR

Geological, Petrographical and Geochemical Properties of Pyroclastic Rocks in the Civanadag Region (Gugu-Balikesir), NW Turkey

Abstract

The study area is located between Balikesir-Dursunbey and Kutahya-Simav districts. According to the field studies and petrographic studies on Civanadag tuffs, it is determined that this unit is formed by two different facies as Upper (fine-grained laminated facies) and Lower (pumice accumulation facies) facies. Lower facies begins with tuffs which are rich by pumice contains metamorphic gravel. Upper level of facies, size of pumice and lithic components decrease. The fine-grained laminated upper facies begins with pink-colored lithic-vitric tuff, vitric tuffs and whitish-gray lithic-vitric tuffs. The uppermost level is represented by abundant green coloured biotite crystal-vitric tuffs. Tuffs end with agglomerates. Pyrogen minerals determined in the petrographic investigations of Civanadag tuffs; quartz +sanidine +plagioclase +biotite ± amphibole. Major, trace and rare earth element contents of Civanadag tuff, which is characterized by their rhyolite, dacite composition, calc-alkaline, show fractional crystallization process which is chiefly controlled by K-feldspar and plagioclase. Also high K and Rb contents in the spider diagram indicate the presence of crustal contamination and magma mixing.

Keywords

Civanadağ Bölgesi (Güğü-Balıkesir) Piroklastik Kayaçlarının Jeolojik, Petrografik ve Jeokimyasal Özellikleri, KB-Türkiye

Öz

Çalışma alanı Balıkesir-Dursunbey ile Kütahya-Simav ilçeleri arasında yer almaktadır. Civanadağ tüfleri üzerinde yapılan arazi ve petrografik çalışmalara göre, birimin alt (pomza yığışım fasiyesi) ve üst (ince taneli laminalı fasiyes) fasiyes olmak üzere iki farklı fasiyesten oluştuğu belirlenmiştir. Alt fasiyes, metamorfik çakıl içerikli pomzaca zengin tüfler ile başlamakta olup, üst seviyelerde pomza ve litik bileşen boyutu azalmaktadır. İnce taneli ve yer yer laminalanma gösteren üst fasiyes ise, pembe renkli, litik-vitrik tüf, vitrik tüfler ve beyazımsı gri renkli litik-vitrik tüfler ile başlamaktadır. Beyaz renkli kristal-vitrik tüf ve vitrik-kristal tüf ile devam etmektedir. En üst seviyesi ise, yeşil renkli bol biyotitli kristal-vitrik tüfler ile temsil edilmektedir. Tüfler, aglomeralar ile son bulmaktadır. Civanadağ tüflerinin petrografik incelemelerinde saptanan pirojen mineraller; kuvars +sanidin +plajioklas +biyotit ±amfiboldür. Riyolit, dasit bileşimli kalkalkalen karakterli özelliğe sahip Civanadağ tüflerinin ana oksit, iz ve nadir toprak element içerikleri tüfün gelişiminde fraksiyonel kristallenmenin önemli bir rol oynadığını, bu kristallenmenin başlıca K-feldispat ve plajiyoklas tarafından kontrol edildiğini göstermektedir. Ayrıca örümcek diyagramındaki yüksek K ve Rb içeriği, kabuk kirlenmesi ve magma karışımının varlığına işaret etmektedir.

Anahtar Kelimeler

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Details

Primary Language

Turkish

Subjects

Engineering

Journal Section

Research Article

Authors

Murat Kalkan ^*
AKSARAY ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ, JEOLOJİ MÜHENDİSLİĞİ BÖLÜMÜ
Türkiye

Yahya Ozpinar
Türkiye

Publication Date

December 29, 2018

Submission Date

July 30, 2017

Acceptance Date

February 6, 2018

Published in Issue

Year 2018 Volume: 2 Number: 2

DOI

https://doi.org/10.29002/asujse.331754

IZ

https://izlik.org/JA86ZS56EA

Cite

RIS / Bibtex

APA

Kalkan, M., & Ozpinar, Y. (2018). Civanadağ Bölgesi (Güğü-Balıkesir) Piroklastik Kayaçlarının Jeolojik, Petrografik ve Jeokimyasal Özellikleri, KB-Türkiye. Aksaray University Journal of Science and Engineering, 2(2), 95-115. https://doi.org/10.29002/asujse.331754

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