Results 61 to 70 of about 462 (183)

Geology, fluid inclusions, mineral and (S-O) isotope chemistry of the Badran orogenic Au deposit, Yana-Kolyma belt, eastern Siberia: implications for ore genesis

Frontiers in Earth Science
The Badran orogenic gold deposit is located in the Yana-Kolyma belt, Eastern Siberia; it has proven reserves of ∼9.3 t of gold and an average grade of 7.8 ppm. The total gold production at the Badran deposit since 1984 amounts to ∼34 t.
Valery Fridovsky, Sergey Kryazhev, Sergey Kryazhev, Lena Polufuntikova, Maxim Kudrin, Galina Anisimova   +5 more
doaj   +1 more source

Basement Domains Recorded in the Zircon Geochemistry of the Northern Sierra Nevada Batholith

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 11, November 2025.
Abstract The northern Sierra Nevada batholith was emplaced into and across a series of accreted crustal belts that vary considerably in their ages and lithologies. Unlike batholithic segments to the south, the northern Sierra comprises smaller, spatially distinct plutons where geologic relations with the host basement can be observed.
Joella Campbell, M. Robinson Cecil, Jade Star Lackey   +2 more
wiley   +1 more source

Research dynamics and frontier trends of orogenic gold deposits: a knowledge map based on bibliometrics

Frontiers in Earth Science
Orogenic gold deposits represent a vital component of global gold reserves, functioning as both significant sources of gold and essential indicators for understanding crustal metallogeny within collisional tectonic environments.
KeXin Liu, Nan Jiang, YongQiang Zhang
doaj   +1 more source

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

Petrophysical Signatures and Mineral Endowment: The Piché Group, Augmitto–Bouzan Sector, Québec, Canada

Geophysical Prospecting, Volume 73, Issue 9, November 2025.
ABSTRACT Hydrothermal alteration plays a crucial role in the precipitation of gold and other metals, particularly within orogenic gold deposits hosted in mafic and ultramafic rocks. This alteration significantly modifies the rock matrix, leading to changes in its petrophysical properties.
Yasaman Nemati, J. Christian Dupuis, Bernard Giroux, Richard Smith, Rita Rodrigues, Bertrand Rottier, Georges Beaudoin   +6 more
wiley   +1 more source

Evolution of Mayflies (Ephemeroptera) Across the Palearctic Mountains: The Biogeographical Links Between the Caucasus and Adjacent Ranges, Central Asia and the Himalayas

Zoologica Scripta, Volume 54, Issue 6, Page 870-883, November 2025.
ABSTRACT The biodiversity of the highest Palearctic mountains is extraordinary, yet its evolution and biogeographic links from a global perspective remain poorly understood. This study focuses on the diversification and biogeography of mayflies (Ephemeroptera) distributed across several prominent mountain ranges, including the Caucasus and adjacent ...
Ľuboš Hrivniak, Pavel Sroka, Roman J. Godunko, Dmitry M. Palatov, Alexander V. Martynov, Jindřiška Bojková   +5 more
wiley   +1 more source

Metallogenic potential and prospecting of orogenic gold deposits in the Shuihouling area of the Dabie Orogenic Belt: A geochemical evidence from stream sediment anomalies

Solid Earth Sciences
The Shuihouling ductile shear zone, located in the core of the Dabie Orogenic Belt spanning Anhui and Hubei provinces, is a key structural unit with notable mineral potential. Situated within the Wudang-Tongbai-Dabie Mo-REE-Au-Ag-Pb-Zn polymetallic belt,
Xiandong Luo, Lei Chen, Jinlai Tang, Xiaoyong Yang   +3 more
doaj   +1 more source

New orogenic type gold occurrences in the Uyanga ore knot (Central Mongolia)

Mongolian Geoscientist, 2018
The Uyanga ore knot district of the Khangay metallogenic zone are hosted by the lower-middle Devonian volcanogenic-sedimentary Erdenetsogt formation.
Ariunbileg Sodov, Olga Gaskova, Altansukh Gankhuyag, Dagva-Ochir Lkhagvasuren, Otgonbaatar Dorjsuren, Oyunchimeg Tumen-Ulzii, Battushig Altanbaatar   +6 more
doaj   +1 more source

Lithosphere architecture characterized by crust-mantle decoupling controls the formation of orogenic gold deposits. [PDF]

Natl Sci Rev, 2023
Hou Z, Wang Q, Zhang H, Xu B, Yu N, Wang R, Groves DI, Zheng Y, Han S, Gao L, Yang L.   +10 more
europepmc   +1 more source

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
R.J Goldfarb, D.I Groves, S Gardoll
openaire   +1 more source