Results 21 to 30 of about 58,223 (220)
Hydrous Carbonatitic Liquids Drive CO2 Recycling From Subducted Marls and Limestones
Geophysical Monograph Series, Page 209-221., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Erwin Schettino, Stefano Poli
wiley +1 more source
American Mineralogist, 2021 The source of fluids and their mechanism of metal precipitation in sediment-hosted, disseminated orogenic gold deposits are ambiguous. Pyrite texture, trace element, S, Pb, and He-Ar isotope compositions of sulfides and C-O isotope data of calcite from ...
Lin Yang +7 more
semanticscholar +1 more source
Yankuang ceshi, 2018 BACKGROUND The Zhelande gold deposit is an important orogenic gold deposit in the Irtysh tectonic belt. This deposit is hosted in the ductile shear zone.
LIU Guo-ren +6 more
doaj +1 more source
GEOCHEMICAL CHARACTERISTICS OF GOLD-BEARING GRANITOIDS AT AYANFURI IN THE KUMASI BASIN, SOUTHWESTERN GHANA: IMPLICATIONS FOR THE OROGENIC RELATED GOLD SYSTEMS [PDF]
Earth Science Malaysia, 2020 This study investigates auriferous granitoids from the Esuajah and Fobinso pits within the Ayanfuri environment in the Paleoproterozoic Kumasi basin.
Theophilus K. Agbenyezi +2 more
doaj +1 more source
BSGF - Earth Sciences Bulletin, 2021 In the Brioude-Massiac district (French Massif Central: FMC), a network of W-As-Bi-Au quartz veins constitutes the Bonnac deposit, where tungsten is the major economic element, together with high-grade gold (up to 15 g/t Au).
Cheval-Garabédian Florent +3 more
doaj +1 more source
Case Histories of Orogenic Gold Deposits
Minerals, 2023 This review compares genetic parameters of 12 orogenic gold deposits. The set of examples is considered to represent largely the variability of orogenic gold deposit (OGD) characteristics. The data are presented in tables and include following definitive parameters: regional geologic settings, nature of hosts rocks and mineralization, ore controlling ...
openaire +2 more sources
Parameters for the formation of orogenic gold deposits [PDF]
Applied Earth Science, 2019 Orogenic gold deposits are the main source of gold for humanity. These deposits formed from the Archaean to Phanerozoic at crustal depths of more than 4 km.
openaire +2 more sources
JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2017 Recently, in Indonesia gold exploration activities are not only focused along volcanic-magmatic belts, but also starting to shift along metamorphic and sedimentary terrains.
Hasria Hasria +2 more
doaj +1 more source
Ore Geology Reviews, 2021 Abstract The Pangjiahe deposit is an orogenic gold deposit located on the northwestern margin of the Fengtai Basin and has proven reserves of 38 t Au at an average grade of 6.3 g/t. Phyllite is widely distributed in the mining area with Triassic granite porphyry and diabase dykes intruded in faults crosscutting it.
Jian Ma +8 more
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Journal of Economic Geology, 2021 Introduction Gold deposits formed during mountain-building processes in Phanerozoic terranes that formed in metamorphic environment have a great dispensation in the world (Goldfarb et al., 2001).
Monire Sakhdari +4 more
doaj +1 more source