Results 51 to 60 of about 6,789 (230)

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

Origins of the Pangkaimen Au Deposit in the Northern Great Xing'an Range, China: Evidence From Geochronological, Geochemical, Fluid Inclusion, and H–O–S–Pb Isotope Data

Geological Journal, EarlyView.
The Pangkaimen Au–Ag deposits belong to the epithermal Au deposits, which are of great significance for guiding the research and development of this type of gold deposit. Metallogenic model diagram of Pangkaimen Au–Ag deposit. ABSTRACT The gold (Au) metallogenic belt in the northern Great Xing'an Range is characterised by the wide occurrence of the ...
Sheng Lu, Hongpeng Chen, Chenglu Li, Ye Wang, Tiesheng Li, Rigen Wu, Zengtao Li, Zhichao Song, Xiannan Zhu   +8 more
wiley   +1 more source

Reflectance spectroscopy applied to mapping the hydrothermal alteration at the Mamão gold deposit, Andorinhas Greenstone Belt, Carajás Mineral Province, Northern Brazil [PDF]

Brazilian Journal of Geology
The Mamão gold deposit is located in the eastern portion of the Amazonian Craton, Northern Brazil, and hosted in Archean metamafic rocks of the Andorinhas greenstone belt. Troy Resources Ltd.
Sebastião Rodrigo Cortez de Souza, Diego Fernando Ducart, Nilson Francisquini Botelho   +2 more
doaj   +1 more source

Soil geochemical prospecting prediction method based on deep convolutional neural networks-Taking Daqiao Gold Deposit in Gansu Province, China as an example

China Geology, 2022
A method is proposed for the prospecting prediction of subsurface mineral deposits based on soil geochemistry data and a deep convolutional neural network model.
Yong-sheng Li, Chong Peng, Xiang-jin Ran, Lin-Fu Xue, She-li Chai   +4 more
doaj   +1 more source

Notable Impact of Paleotectonic Stress on Gold Mineralisation in the West Qinling Orogen

Geological Journal, EarlyView.
By applying fuzzy clustering and multiple inverse methods, we systematically processed the data of vein and fault slip in this ore deposit to reveal the transition of orogenic geological environment and paleotectonic stress field. Our research results show two different stress states: the northwest–southeast extensional stress field and the northeast ...
Hongyan Wang, Aibing Chen, Jian Yang, Yuan Zhang   +3 more
wiley   +1 more source

Geology, geochemistry, fluid inclusion data, stable isotope characteristics, and ore genesis of the Barout Aghaji gold deposit, NW Zanjan, Iran

Journal of Asian Earth Sciences: X, 2023
The Barout Aghaji gold deposit is located ∼90 km northwest of Zanjan, within the Takab-Takht-e-Soleyman subzone of the Sanandaj-Sirjan metamorphosed-deformed zone.
Babak Asli, Mir Ali Asghar Mokhtari, Hemayat Jamali   +2 more
doaj   +1 more source

Giant Porphyry Copper Deposits Caused by a Slab Jamming in the Mantle Transition Zone

Terra Nova, EarlyView.
ABSTRACT Two giant porphyry copper deposits in the Southern Central Andes formed during the Miocene–Pliocene transition when a bend in the subducting Juan de Fernández hotspot chain jammed in the mantle transition zone, causing mega‐scale slab‐kinking. This geometry implies mechanical resistance that caused East–West compression and eventually a thrust‐
Nipaporn Nakrong, Marnie Forster, Wim Spakman, Hielke Jelsma, Francois Gaboury, Gordon Lister   +5 more
wiley   +1 more source

Geology, geochronology and isotopic geochemistry of the Xiaoliugou W-Mo ore field in the Qilian Orogen, NW China : case study of a skarn system formed during continental collision [PDF]

, 2017
This study is financially supported by the National Natural Science Foundation of China (41502068).The Xiaoliugou W-Mo ore field lies within the mid-Paleozoic North Qilian Orogen, NW China, and hosts a W resource of 48.8 Mt @ 0.4% and 412.6 Mt of Mo @ 0 ...
Cawood, Peter Anthony, Ding, Zhenju, Yue, Suwei, Zheng, Yi   +3 more
core   +1 more source

Ghana airborne geophysics project in the Volta and Keta Basin : BGS final report [PDF]

, 2009
This report describes the work undertaken by BGS between November 2006 and March 2009 in collaboration with Fugro Airborne Surveys Pty Ltd on an airborne geophysical survey and ground reconnaissance mapping of the Volta River and Keta Basins, Ghana ...
Carney, J.N., Jordan, C.J., McDonnell, P., Thomas, C.W.   +3 more
core  

Characterization of ore-forming systems - advances and challenges [PDF]

, 2018
Economically viable concentrations of mineral resources are uncommon among the predominantly silicate-dominated rocks in Earth's crust. Most ore deposits that were mined in the past or are currently being extracted were found at or near Earth's surface ...
Blenkinsop, Thomas, Gessner, Klaus, Sorjonen-Ward, Peter   +2 more
core   +2 more sources