نتایج جستجو برای: metallogeny

تعداد نتایج: 149  

Journal: : 2022

M. Pavlun — doctor of geological sciences, professor, dean the faculty Ivan Franko National University Lviv, academician Academy Sciences Higher School Ukraine, full member Ukrainian Mineralogical Society, Shevchenko Scientific Society. Pavlun’s systematic scientific research on metallogeny and thermobarogeochemistry (TBGC) molybdenum-tungsten gold ore formations served as basis for preparation...

2001
R. F. Weinberg

Crystallization coupled with gravity removal of depleted interstitial melt has long been recognized as a mechanism of magma differentiation. Similarly, heat released by synplutonic basaltic magma intrusions has long been recognized as capable of driving convection in granite chambers. Direct evidence of these processes has seldom been described in granites. In the Tavares pluton, we mapped a nu...

Journal: :Geological Society of America Bulletin 2023

The late Mesozoic destruction of the eastern North China Craton (NCC) resulted from intense crust-mantle interaction, culminating in formation world-class gold deposits Jiaodong Peninsula at ca. 120 Ma. We present zircon U-Pb geochronological data, Hf isotopic compositions, whole-rock major and trace element, Sr-Nd-Pb compositions for two suites granitoids: one (the Linglong suite) that hosts s...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم زمین 1380

چکیده ندارد.

Journal: :Economic Geology 2022

Abstract Mineral inclusions within native gold are features of lode occurrences that preserved in detrital particles. Inclusion assemblages populations particles placers from specific localities revealed through inspection polished sections, and assimilation robust data sets permits reconstruction the source mineralogy. differ considerably according to deposit type, various approaches have been...

Journal: :Gondwana Research 2021

Gold in the Ariab district (Red Sea Hills, Sudan) is mined gossans developed over volcanogenic massive sulphide (VHMS) deposits formed context of a Tonian ensimatic arc Haiya terrane, Neoproterozoic Arabo-Nubian Shield. All primary gold occurrences belt, whatever their style (VHMS-, quartz lode- or shear-zone-hosted), appear, however, to have been syn-to late-kinematic, i.e., final Pan-African ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم زمین 1381

چکیده ندارد.

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