Results 81 to 90 of about 6,789 (230)

Superimposed Gold Mineralization Events in the Tuanshanbei Orogenic Gold Deposit, Central Jiangnan Orogen, South China

Economic Geology
Abstract The Jiangnan orogen, one of the largest gold-producing areas in China, has experienced multiple orogenic events with complex structural overprinting that is marked by multiple stages of magmatism, deformation, metamorphism, and orogenic gold mineralization.
Cheng Wang, Yong-Jun Shao, Richard Goldfarb, Shi-Min Tan, Ji Sun, Chao Zhou, Han Zheng, Qing-Quan Liu, Yi-Qu Xiong   +8 more
openaire   +1 more source

Environmental evolution of cover deposits on chemically distinctive bare ground, New Zealand: review and temporal contexts

New Zealand Journal of Geology and Geophysics, Volume 68, Issue 5, Page 1120-1152, December 2025.
ABSTRACT Chemically distinctive features such as high salinity, low nutrient contents, and extremes of pH can limit the development of a vegetation cover on soil‐free bare ground. This study synthesises our previous work on the geoecology of numerous chemically distinctive bare sites in the South Island and adds a temporal component within the last ...
Dave Craw, Cathy Rufaut
wiley   +1 more source

Carbonate alteration of ophiolitic rocks in the Arabian–Nubian Shield of Egypt: sources and compositions of the carbonating fluid and implications for the formation of Au deposits [PDF]

, 2016
Ultramafic portions of ophiolitic fragments in the Arabian–Nubian Shield (ANS) show pervasive carbonate alteration forming various degrees of carbonated serpentinites and listvenitic rocks.
Azer, Mokhles K., Boskabadi, Arman, Boyce, Adrian, Broman, Curt, Cooper, Matthew J., Majka, Jaroslaw, Mohamed, Fathy H., Pitcairn, Iain K., Stern, Robert J., Teagle, Damon A.H.   +9 more
core   +2 more sources

Genesis of the Xiaotazigou gold deposit in the northern margin of the north China craton: constraints from sulfur isotopes, rare earth elements, and trace elements

Frontiers in Earth Science
The Xiaotazigou gold deposit is located in the eastern section of the Chifeng–Chaoyang gold metallogenic belt on the northern margin of the North China Craton. In this study, rare earth and trace element compositions of ores and host rocks, together with
He Yuan, He Yuan, Lichun Fu, Lichun Fu, Yinzeng Bai, Qiang Wei, Zejiao Wang, Yongtao Zhao, Jingyao Sun, Jingyao Sun   +9 more
doaj   +1 more source

Tectonics, geology and origins of Te Riu‐a‐Māui / Zealandia

New Zealand Journal of Geology and Geophysics, Volume 68, Issue 4, Page 531-567, December 2025.
ABSTRACT Te Riu‐a‐Māui / Zealandia is a 95% submerged, five million square km southern hemisphere continent that includes the islands of New Zealand and New Caledonia. For the last 45 million years (Ma) Zealandia has been cut by the Pacific‐Australian plate boundary which today changes character from a west‐dipping subduction zone in the north to ...
Nick Mortimer
wiley   +1 more source

3D gravity modelling of the Aguablanca Stock, tectonic control and emplacement of a Variscan gabbronorite bearing a Ni–Cu–PGE ore, SW Iberia [PDF]

, 2008
The Aguablanca stock is a Variscan mafic pluton located in the Ossa-Morena zone, southern Iberian Massif, hosting an unusual Ni–Cu–PGE mineralization associated with magmatic breccia pipes which intruded its northern part.
Bachiller, Casquet, Dallmeyer, Evans-Lamswood, Forrest, Galindo, I. ROMEO, Liñán, Lunar, Montero, Ortega, Ortega, Piña, Piña, Piña, Quesada, Quesada, Quesada, R. CAPOTE, R. LUNAR, R. TEJERO, Reavy, Ribeiro, Romeo, Santos, Tornos, Vauchez   +26 more
core   +1 more source

U-Pb SHRIMP and 40Ar/39Ar constraints on the timing of mineralization in the Paleoproterozoic Caxias orogenic gold deposit, São Luís cratonic fragment, Brazil

Brazilian Journal of Geology
Caxias is an orogenic gold deposit in the São Luís cratonic fragment, which is correlated with the Rhyacian terranes of the West-African Craton. The deposit postdates peak metamorphism (estimated at 2100 ± 15 Ma) and is hosted in a shear zone that cuts ...
Evandro Luiz Klein, Colombo Celso Gaeta Tassinari, Paulo Marcos Vasconcelos   +2 more
doaj   +1 more source

Gold Fineness in the Jiangnan Orogenic Belt of South China: Correlations with Geological Characteristics and Fluid Conditions [PDF]

Lithosphere
A large number of Au deposits in the Jiangnan Orogenic Belt (JOB) are characterized by producing the bonanza-style gold with extremely high gold fineness (GF) in orogenic Au deposits and intrusion-related Au deposits.
Yi Liang, Huaiyi Zhang, Haonan Huang, Qiuming Pei, Hangfei Ge, Xingyu Jiao   +5 more
doaj   +1 more source

Tracking Sediment Mixing Along the Lower Danube River From the Carpathians to the Black Sea

Terra Nova, Volume 37, Issue 6, Page 413-420, December 2025.
ABSTRACT We use detrital zircon U–Pb geochronology as a sediment provenance tracer in modern river sands to better understand how tectonic, climatic, and anthropogenic processes modulate sediment transport dynamics of the Carpathians to the Black Sea source to sink system.
Iulian Pojar, Tomas Capaldi, Cornel Olariu, Andrei‐Gabriel Dragoș, Relu Dumitru Roban, Mihaela C. Melinte Dobrinescu   +5 more
wiley   +1 more source

Mining revival [PDF]

, 2010
In relation to its size the United Kingdom (UK) is remarkably well-endowed with mineral resources as a result of its complex geological history. Their extraction and use have played an important role in the development of the UK economy over many years ...
Lusty, Paul
core