中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Geochemical and petrological characteristics of xenoliths in Mansehra Granite, NW Himalaya, Pakistan: implications for petrogenesis and tectonic settings

文献类型:期刊论文

作者Tehseen Zafar;  Munazzam Ali Mahar;  Hafiz Ur Rehman;  Muhammad Riaz;  Khalid Latif;  Abiola Oyebamiji;  Mustansar Naeem
刊名Episodes
出版日期2019
卷号42期号:4页码:263-285
英文摘要

Mansehra Granite (MG) is massive and sheared which contains light-gray to jet-black schistosed and light-gray micaceous quartzite restites. The later possess relatively higher quartz as compared with mica contents whereas the former has predominant quartz and feldspar. Enclosure of apatite and zircon in micas and absence of sillimanite in schistosed and non-foliated facies suggest that these rocks are restite in nature. Presence of abundant and larger mica flakes at contact of restites with MG indicates exposure of these flakes at relatively higher temperature of granitic melt (623.7−886.6 °C) particularly at their margins. However, central part of restites remained unaffected due lesser impact of elevated temperature. Schistose and surmicaceous restites show crenulation cleavage and preserve structural antiquity during amalgamation in felsic melt. Geochemically, restites and Tanawal Formation indicate calc-alkaline to high K calc-alkaline domain with orogenic syn-collisional settings. Geochemical characteristics and modal mineralogy of restites and Tanawal Formation are similar. This study suggests that former has been derived from the later and their field relationships and geochemical signatures provide credible evidence in favour of S-type trait of Mansehra Granite. In geochemical diagrams, MG portrayed calc-alkaline, peraluminous S-type nature and its magma was generated from heterogeneous Tanawal Formation via fractional crystallization.

语种英语
源URL[http://ir.gyig.ac.cn/handle/42920512-1/10935]  
专题地球化学研究所_环境地球化学国家重点实验室
作者单位1.Institute of Geology, University of the Punjab, Lahore, 54590, Pakistan
2.National Centre of Excellence in Geology, University of Peshawar, Peshawar, 25130, Pakistan
3.Department of Geological Sciences, University of Texas at El Paso, El Paso, TX 79968, United States
4.Department of Earth and Environmental Sciences, Kagoshima University, Kagoshima, Japan
5.Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
推荐引用方式
GB/T 7714
Tehseen Zafar;Munazzam Ali Mahar;Hafiz Ur Rehman;Muhammad Riaz;Khalid Latif;Abiola Oyebamiji;Mustansar Naeem. Geochemical and petrological characteristics of xenoliths in Mansehra Granite, NW Himalaya, Pakistan: implications for petrogenesis and tectonic settings[J]. Episodes,2019,42(4):263-285.
APA Tehseen Zafar;Munazzam Ali Mahar;Hafiz Ur Rehman;Muhammad Riaz;Khalid Latif;Abiola Oyebamiji;Mustansar Naeem.(2019).Geochemical and petrological characteristics of xenoliths in Mansehra Granite, NW Himalaya, Pakistan: implications for petrogenesis and tectonic settings.Episodes,42(4),263-285.
MLA Tehseen Zafar;Munazzam Ali Mahar;Hafiz Ur Rehman;Muhammad Riaz;Khalid Latif;Abiola Oyebamiji;Mustansar Naeem."Geochemical and petrological characteristics of xenoliths in Mansehra Granite, NW Himalaya, Pakistan: implications for petrogenesis and tectonic settings".Episodes 42.4(2019):263-285.

入库方式: OAI收割

来源:地球化学研究所

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