Hydrothermal alteration of tourmaline from pegmatitic rocks enclosed in serpentinites: Multistage processes with distinct fluid sources
نویسندگان
چکیده
منابع مشابه
Unraveling alteration histories in serpentinites and associated ultramafic rocks with magnetite (U-Th)/He geochronology
Serpentinization is a widespread process that affects large-scale geodynamic processes along plate boundaries, including continental breakup, seafloor spreading, and subduction. Documenting the timing of serpentinization is critical for our understanding of these processes, but direct dating of serpentinites has been challenging or impossible. We present the first application of magnetite (U-Th...
متن کاملهمیافتی تورمالین-فیروزه در منطقه‌ی دگرسانی فیلیک، کانسار مس-طلای منطقه‌ی کوه زر، جنوب سمنان
Torud-Chah Shirine magmatic arc is located in south of Semnan. This arc is composed of Cenozoic volcanic, pyroclastic and intrusive rocks. The Kuh-Zar in manning province of Bagho is outstanding with Cu-Au mineralization. Mining is restricted to hydrothermal alteration zones in the area. Alteration zones includes propylitic, phyllic, advanced argillic and silicic. The rare association of tourma...
متن کاملژئوشیمی تورمالین‌های موجود در دایک‌های پگماتیتی و آپلیتی مجموعه پلوتونیک الوند و سنگ‌های دگرگون منطقه همدان
The pegmatitic and aplitic dikes in the Alvand plutonic complex and metamorphic rocks of its contact aureole (hornfelses) are the latest magmatic phase in this area. In addition, at distances away from the Alvand plutonic complex, various pegmatitic-aplitic dikes intruded in the regional metamorphic rocks. Tourmalines from Alvand dikes, observed as nodules and sometimes with graphic intergrowth...
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The area of interest is located on the eastern flank of the Andean Cordillera, San Juan province, Argentina. The 3600 km2 area is characterized by Siluro-Devonian to Neogene sedimentary and igneous rocks and unconsolidated Quaternary sediments. Epithermal, porphyry-related, and magmatic-hydrothermal breccia-hosted ore deposits, common in this part of the Frontal Cordillera, are associated with ...
متن کاملGeologic Framework of Jurassic Reservoir Rocks in the Dixie Valley Geothermal Field, Nevada: Implications from Hydrothermal Alteration and Stratigraphy
The main reservoir in the Dixie Valley geothermal field of Nevada is hosted in fractured Jurassic rocks within the hanging wall of the Stillwater fault. Within the Jurassic sequence, at least four major stages of alteration related to the fault system can be identified. The paragenetic sequence from oldest to youngest consists of Stage I) biotite-potassium feldspar veins, and epidote-chlorite-c...
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ژورنال
عنوان ژورنال: Lithos
سال: 2021
ISSN: 0024-4937
DOI: 10.1016/j.lithos.2020.105823