作为南日耳曼群碳酸盐角变形条件指标的物种和绿泥石（斯洛伐克共和国）

Q3 Earth and Planetary Sciences

Bulletin Mineralogie Petrologie Pub Date : 2022-01-01 DOI:10.46861/bmp.30.108

Pavol Myšľan, Peter Ružička

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引用次数: 0

摘要

所研究的偏碳酸盐岩位于斯洛伐克南gemicum单元早古生代岩石中。偏碳酸盐岩是Vlachovo组(tich Voda, star Voda)和Bystrý potok组(Betliar， Čučma, mal hekerov， Smolník - Mária tersamizia, Holec)的一部分。详细的研究表明，Gelnica Group在330 - 370°C下的变质压力-温度(P-T)条件为3 - 7 kbar。用绿泥石地温计和云母地压计对计算的P-T条件进行了验证。偏碳酸盐的矿物组合由富硅(3.10 ~ 3.35 apfu)的腐殖云母、铁镁绿泥石(斜长石和色辉石)、石英、钾长石和辅氟磷灰石组成。云母和镁铁绿泥石来源于泥质原岩区域变质过程中粘土物质的变质再结晶和基性火山碎屑物质的掺入，与碳酸盐连续沉积。偏碳酸盐岩属于格尔尼卡组上部，在绿片岩相条件下变质。

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Sľudy a chlority ako indikátory podmienok metamorfózy karbonátových hornín gelnickej skupiny južného gemerika (Slovenská republika)

Investigated metacarbonates are located in the Early Paleozoic rocks of Southern Gemericum unit, Slovakia. Metacarbonates are part of Vlachovo Formation (Tichá Voda, Stará Voda) and Bystrý potok Formation (Betliar, Čučma, Malá Hekerová, Smolník - Mária Terézia, Holec). Detailed studies indicated metamorphic pressure-temperature (P-T) conditions of 3 - 7 kbar at 330 - 370 °C for the Gelnica Group. The calculated P-T conditions were verified using chlorite geothermometer and phengite geobarometer. Mineral association of metacarbonates consists of Si rich (3.10 - 3.35 apfu) phengitic micas, Fe-Mg chlorites (clinochlore and chamosite), quartz, K-feldspars and accessory fluorapatite. Micas and Mg-Fe chlorites originated from metamorphic recrystallization of clay material with incorporations of basic pyroclastic material during the regional metamorphosis of pelitic protolith, which sedimented continuously with carbonates. Metacarbonates belong to the upper parts of Gelnica Group, which were metamorphosed under the greenschist facies conditions.

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来源期刊

Bulletin Mineralogie Petrologie Earth and Planetary Sciences-Economic Geology

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期刊介绍： Bulletin Mineralogie Petrologie is a peer-reviewed journal focused especially on: mineralogy, crystal chemistry and study of crystal structures of minerals study of mineral associations and processes of their origin meteoritics, research of tectites economic geology (of ore deposits) and study of history of mining of ore deposits topographic mineralogy petrology of igneous, metamorphic and sedimentary rocks instrumental analytical methods at mineralogy and petrology mineralogy and petrology as tools for archeology and similar disciplines