Results 11 to 20 of about 1,484 (210)
The Neglected Involvement of Organic Matter in Forming Large and Rich Hydrothermal Orogenic Gold Deposits [PDF]
Geosciences, 2021 Orogenic gold deposits have provided most of gold to humanity. These deposits were formed by fluids carrying dissolved gold at temperatures of 200–500 °C and at crustal depths of 4–12 km.
Damien Gaboury
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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 ...
Franz Michael Meyer
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Chemical composition of tourmaline in orogenic gold deposits [PDF]
Mineralium Deposita, 2020 Tourmaline from 18 orogenic gold deposits and districts, hosted in varied country rocks and metamorphic facies, was investigated by EPMA (electron probe micro-analyzer) and LA-ICP-MS (laser ablation-inductively coupled plasma-mass spectrometry) to establish discriminant geochemical features to constrain indicator mineral surveys for gold exploration ...
Marjorie Sciuba +2 more
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Porphyry, epithermal, and orogenic gold prospectivity of Argentina
Ore Geology Reviews, 2015 This paper presents a review of the available information on the significant porphyry, epithermal, and orogenic gold districts in Argentina, including the tectonic, geological, and structural settings of large deposits or deposits that have been exploited in the past.
Ford, A. +5 more
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Orogenic gold: is a genetic association with magmatism realistic?
Mineralium Deposita, 2022 AbstractMany workers accept a metamorphic model for orogenic gold ore formation, where a gold-bearing aqueous-carbonic fluid is an inherent product of devolatilization across the greenschist-amphibolite boundary with the majority of deposits formed within the seismogenic zone at depths of 6–12 km.
Richard J. Goldfarb, Iain Pitcairn
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Predictive mapping of prospectivity for orogenic gold in Uganda [PDF]
Journal of African Earth Sciences, 2014 Integration of enhanced regional geo-datasets has facilitated new geological interpretation and modelling of prospectivity for orogenic gold in southwestern Uganda. The geo-datasets include historical geological maps, geological field data, digital terrain models, Landsat TM data and airborne geophysical data.
Herbert, Sarah +3 more
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All Earth, 2022 Using GIS-based multi-criteria decision-making techniques, i.e. mineral prospectivity mapping (MPM), specific spatial problems can be solved by combining information from different sources.
Mehdi Maleki +4 more
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Solid Earth Sciences, 2022 The Xing–Meng Orogenic Belt hosts an amount of low-sulfidation epithermal gold deposits. However, the tectonic-magmatic setting remains problematic, which hinders understanding the factors that control the gold endowment in the region.
Yongbin Wang +4 more
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Geophysical Monograph Series, Page 1-26., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst +8 more
wiley +1 more source
Frontiers in Earth Science, 2023 Introduction: The Zhangjiapingzi gold deposit, located at the western margin of the Yangtze Craton and controlled by the Jinhe-Chenghai deep fault, is a newly discovered super-large gold deposit in the Danba-Mianning metallogenic belt.
Bing Yan +6 more
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