کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8959577 1646328 2018 80 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The connection between hydrothermal fluids, mineralization, tectonics and magmatism in a continental rift setting: Fluorite Sm-Nd and hematite and carbonates U-Pb geochronology from the Rhinegraben in SW Germany
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
The connection between hydrothermal fluids, mineralization, tectonics and magmatism in a continental rift setting: Fluorite Sm-Nd and hematite and carbonates U-Pb geochronology from the Rhinegraben in SW Germany
چکیده انگلیسی
Fluid properties changed after the deposition of Middle Triassic Muschelkalk evaporites from low salinity, high temperature (1-6 wt.% NaCleq, 200-270 °C, cooling late-metamorphic basement fluids) to high salinity, moderate temperature (20-26 wt.% (NaCl + CaCl2), 50-170 °C, mixture of a modified bittern brine (“basement brine”) with halite dissolution brine). This change led to large scale ore deposition (fluorite-barite-quartz with Pb-Zn-Cu, Bi-Co-Ni-Ag-U, Fe-Mn ores). During the Paleogene and Neogene, previously separated aquifers from various sedimentary units were connected by juxtaposition of the fluid source rocks during Rhinegraben rifting, which resulted in variable salinity and temperature fluids (1-26 wt. % (NaCl + CaCl2), 50-350 °C) by a multi-component fluid mixing process. Typical mineralization related to this shows barren or Pb-Zn-Cu veins with large amounts of barite.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geochimica et Cosmochimica Acta - Volume 240, 1 November 2018, Pages 11-42
نویسندگان
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