Orogenic gold deposit - Wikipedia
Orogenic gold deposits are responsible for approximately 75% of the world's gold production at over 1 billion ounces, when accounting that the origin of many gold placer deposits were orogenic in nature.
Formation of orogenic gold deposits by progressive movement …
2022年10月17日 · 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.
On the source of orogenic gold | Geology | GeoScienceWorld
2013年12月1日 · The vast majority of orogenic gold (excluding Witwatersrand, South Africa) is from three periods in geologic time: the Neoarchean (ca. 2700-2400 Ma), a second period in the Paleoproterozoic (ca. 2100-1800 Ma), and a third period from ca. 650 Ma continuing throughout the Phanerozoic (Goldfarb et al., 2001).
Orogenic gold and geologic time: A global synthesis
2001年1月1日 · Orogenic gold deposits have formed over more than 3 billion years of Earth's history, episodically during the Middle Archean to younger Precambrian, and continuously throughout the Phanerozoic. This class of gold deposit is characteristically associated with deformed and metamorphosed mid-crustal blocks, particularly in spatial association with ...
Parameters for the formation of orogenic gold deposits
2019年2月26日 · 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. The key parameters accounting for their formation remain under discussion.
Orogenic gold and geologic time: a global synthesis
2001年4月1日 · Orogenic gold deposits have formed over more than 3 billion years of Earth's history, episodically during the Middle Archean to younger Precambrian, and continuously throughout the Phanerozoic.
A holistic model for the origin of orogenic gold deposits and its ...
2019年6月15日 · Orogenic gold deposits are commonly vertically extensive, gold-only deposits that formed in broad thermal equilibrium with their wall rocks from low-salinity H 2 O–CO 2 ore fluids at crustal depths from 2 to 15, and arguably up to 20 km (Groves 1993; Kolb and Meyer 2002; Kolb et al. 2005a, b, 2015).
Orogenic gold: is a genetic association with magmatism realistic ...
2022年11月9日 · Orogenic gold districts in the fore-arc (Chugach Mountains) and subduction-related batholith margin (Willow Creek) overlie a basement of oceanic crust and lithospheric mantle outboard of the North American continental lithosphere.
Orogenic Gold Deposits: Mineralization Mechanism and Research ...
2023年12月12日 · Orogenic Gold Deposits: A Proposed Classification in the Context of Their Crustal Distribution and Relationship to other Gold Deposit Types. Ore Geology Reviews , 13(1 -5): 7–27. https://doi.org/10.1016/s0169-1368(97)00012-7
Orogenic gold: Common or evolving fluid and metal sources …
2015年9月15日 · Orogenic gold deposits of all ages, from Paleoarchean to Tertiary, show consistency in chemical composition. They are the products of aqueous-carbonic fluids, with typically 5–20 mol% CO 2, although unmixing during extreme pressure fluctuation can lead to entrapment of much more CO 2 -rich fluid inclusions in some cases.