Results 1 to 10 of about 501 (179)
Lower crustal resistivity signature of an orogenic gold system [PDF]
Scientific Reports, 2021 Orogenic gold deposits provide a significant source of the world’s gold and form along faults over a wide range of crustal depths spanning sub-greenschist to granulite grade faces, but the source depths of the gold remains poorly understood.
Graham Heinson +6 more
doaj +6 more sources
Formation of orogenic gold deposits by progressive movement of a fault-fracture mesh through the upper crustal brittle-ductile transition zone [PDF]
Scientific Reports, 2022 Orogenic gold deposits are comprised of complex quartz vein arrays that form as a result of fluid flow along transcrustal fault zones in active orogenic belts.
Miguel Tavares Nassif +6 more
doaj +2 more sources
Parameters for the formation of orogenic gold deposits [PDF]
Applied Earth Science: Transactions of the Institute of Mining and Metallurgy, 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.
Damien Gaboury
exaly +3 more sources
Late-orogenic gold deposits of Egypt
Горные науки и технологии, 2018 Egypt belongs to states developing its mineral resource base. Gold-bearing territory of Egypt is located within the Nubian-Arabian shield in the Neoproterozoic collision zone of transverse thrusts.
Hani Sharafeldin Elsayed
doaj +3 more sources
Lithospheric conductors reveal source regions of convergent margin mineral systems [PDF]
Scientific Reports, 2022 The clean energy transition will require a vast increase in metal supply, yet new mineral deposit discoveries are declining, due in part to challenges associated with exploring under sedimentary and volcanic cover.
Alison Kirkby +7 more
doaj +2 more sources
Mesozoic orogenic gold deposits in Mexico
Ore Geology Reviews, 2017 Abstract Although orogenic gold deposits in Mexico were mostly formed during the Cenozoic, they started forming during the Late Cretaceous, or perhaps even earlier. Mylonitic zones in the Oaxacan metamorphic complex span either Permo-Triassic or Triassic-Jurassic ages, but none of these have been formally associated with the existing orogenic gold ...
Aldo Izaguirre +2 more
exaly +2 more sources
Orogenic gold and geologic time: a global synthesis
Ore Geology Reviews, 2001 AbstractOrogenic gold deposits have formed over more than 3 billion years of Earth’s history, episodically during the MiddleArchean to younger Precambrian, and continuously throughout the Phanerozoic. This class of gold deposit is characteristi-cally associated with deformed and metamorphosed mid-crustal blocks, particularly in spatial association with
D I Groves
exaly +2 more sources
Antimony in rutile as a pathfinder for orogenic gold deposits
Ore Geology Reviews, 2019 Abstract In our study we explore the applicability of rutile as a pathfinder for orogenic gold deposits, which are an important source of this metal worldwide. We analysed rutile associated with orogenic Au deposits from three different Precambrian terranes, the Capricorn Orogen, the Barberton Greenstone Belt and the Ashanti Belt, all of which formed
Andrea Agangi +2 more
exaly +3 more sources
Minerals of bismuth and antimony in original deposits of zarmitan gold zone, located in granitoid intrusion (Uzbekistan) [PDF]
E3S Web of Conferences, 2023 Modern methods of nanomineralogy (electron microscopy, electron probe microanalysis) were used to study the ores of one of the largest industrial facilities of Uzbekistan - the Zarmitan gold zone, which includes the Zarmitan, Urtalik, Guzhumsay deposits,
Umarov Akromiddin +5 more
doaj +1 more source