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Journals / Gümüşhane Üniversitesi Fen Bilimleri Dergisi / 2017 / Cilt: 7 - Sayı: 2

Petrography, Mineral Chemistry and P-T Conditions of the Tertiary Hornblende-bearing Andesites in the Altınpınar (Torul-Gümüşhane)

Tersiyer Yaşlı Altınpınar Hornblendli Andezitlerinin (TorulGümüşhane) Petrografisi, Mineral Kimyası ve P-T Kristalleşme Koşulları

Cem YÜCEL
Enver AKARYALI
Emre AYDINÇAKIR
Mehmet Ali GÜCER
Pages
236–267
Publication Date
2022-10-18
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

All hornblende minerals are exclusively Ca-type with CaB >= 1.5, (Na+K)A

📌 3 Key Takeaways

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Objective & Hypothesis:In the eastern Pontides orogenic belt (NE Turkey) there are different volcanic rocks exposed thatformed under different types of magma.
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Key Findings & Data:The andesites are mainly consisting of hornblende(amphibole), plagioclase (An40-61Ab38-57Or1-5), clinopyroxene (Wo44-45En43-44Fs12), opaque (generally magnetite and pyrite) minerals, with secondary clay, sericite, calcite, chlorite minerals. .The samples commonly exhibit microlitic porphyry and vitrophyric porphyry textures.
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Conclusion & Impact:All hornblende minerals are exclusively Ca-type with CaB >= 1.5, (Na+K)A
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

In the eastern Pontides orogenic belt (NE Turkey) there are different volcanic rocks exposed thatformed under different types of magma. Tertiary volcanism consists of acidic, notr and basicvolcanic and pyroclastic rocks in Gümüşhane and surrounding area. The Eocene volcanism playedan important role during the evolution of the eastern Pontides. In this study, petrography, mineralchemistry and P-T conditions of the Tertiary hornblende-bearing andesites in the Altınpınar(Torul-Gümüşhane) are investigated. The andesites are mainly consisting of hornblende(amphibole), plagioclase (An40-61Ab38-57Or1-5), clinopyroxene (Wo44-45En43-44Fs12), opaque (generally magnetite and pyrite) minerals, with secondary clay, sericite, calcite, chlorite minerals. .The samples commonly exhibit microlitic porphyry and vitrophyric porphyry textures. Some of thehornblende aggregates, occurring in large plates, contain inclusions of plagioclase and opaqueminerals. All hornblende minerals are exclusively Ca-type with CaB >= 1.5, (Na+K)A

Özet

Doğu Pontid orojenik kuşağında (KD Türkiye) farklı magma türleri altında oluşmuş farklı volkanikkayaçlar yüzeyleme vermektedir. Tersiyer volkanizması, Gümüşhane ve çevresinde asidik, nötr vebazik volkanik ve piroklastik kayaçlardan meydana gelmektedir. Bu volkanizma doğu Pontidler'inevriminde ise önemli bir rol oynamaktadır. Bu çalışma kapsamında Altınpınar (Torul/Gümüşhane)civarında yüzeyleme veren Tersiyer yaşlı hornblendli andezitik kayaçların petrografisi, mineralkimyası ve sıcaklık-basınç koşulları irdelenmiştir. Andezitler başlıca hornblend (amfibol),plajiyoklas (An40-61Ab38-57Or1-5), klinopiroksen (Wo44-45En43-44Fs12) ve opak (genellikle magnetit vepirit) mineralleri, ikincil kil, serizit, kalsit ve klorit mineralleri içerir ve mikrolitik-porfirik vevitrofirik porfirik dokular sergiler. Bazı hornblend mineralleri iri kristalli gelişmiş olup, plajiyoklasve opak mineral kapanımları içermektedir. Tüm hornblendler CaB >= 1.5, (Na+K)A

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Cite This Article

YÜCEL, C., AKARYALI, E., AYDINÇAKIR, E., GÜCER, M. A. (2022). Petrography, Mineral Chemistry and P-T Conditions of the Tertiary Hornblende-bearing Andesites in the Altınpınar (Torul-Gümüşhane). Gümüşhane Üniversitesi Fen Bilimleri Dergisi, Cilt: 7 - Sayı: 2, 236–267. https://ajindex.com/articles/527116

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