Results 51 to 60 of about 18,330 (214)

Physicochemical conditions of the formation of the Larino granite-gneiss dome (South Ural)

Georesursy
The Larino granite-gneiss dome is located on the border of the Aramil-Sukhtelya and Magnitogorsk megazones and is a two-headed anticlinal structure, the nuclear parts of which are composed of granitoids of the Pervomai and Larino massifs, and their ...
V. I. Snachev, A. V. Snachev, V. Yu. Prokofiev   +2 more
doaj   +1 more source

Mineralogy and Formation of a Platinum Placer Deposit, Southern South Island, New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
Placer platinum group minerals (PGM), with subordinate detrital gold, have been concentrated in Pleistocene coastal sands near the present Foveaux Strait shoreline. This study characterises the PGM in what is New Zealand's only identified PGM deposit.
Marshall Palmer, Dave Craw
wiley   +1 more source

Zircon Inheritance Refines the Cambrian Orogenic Architecture of Southeast Australia

Tektonika
The Selwyn Block is one of the few accreted terranes identified in the vast Paleozoic Tasmanides of eastern Australia and its incorporation into this orogen marks a first-order event in the tectonic evolution of the Pacific margin of Gondwana.
Jacob Mulder, Jacqueline Halpin, Laura Morrissey, Yousef Zoleikhaei, John Everard, Sebastien Meffre, Mike Hall, Oliver Nebel, Peter Cawood   +8 more
doaj   +1 more source

Provenance study of Phanerozoic rocks from the Cordillera Real of Bolivia

Brazilian Journal of Geology, 2021
U/Pb ages of detrital zircon from two samples of Ordovician sediments were determined and, based on similar published data, were compared with xenocrystal inheritance of Triassic and Oligocene granitoids of the Cordillera Real in order to better ...
Alvaro Rodrigo Iriarte, Umberto Giuseppe Cordani, Miguel Basei   +2 more
doaj   +1 more source

Late Triassic Hydroclimatic Changes in Central China Linked to Evolving Mountain Topography

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract During the Late Triassic, tropical Pangea drifted northward into subtropical latitudes and became progressively drier. In contrast, South China, despite experiencing a similar latitudinal shift, transitioned from an arid to humid climate. Based on the sedimentary record of the Zigui Basin, this study constrains the arid to humid climatic shift
Rong Chai, Jianghai Yang, Peter A. Cawood, Chenguang Zhu, Yuansheng Du, Yongyun Hu, Xiang Li, Chengshan Wang   +7 more
wiley   +1 more source

Petrogenesis of Triassic granitoids in the East Kunlun Orogenic Belt, northern Tibetan Plateau and their tectonic implications.

, 2017
The East Kunlun Orogenic Belt (EKOB), an important part of the Greater Tibetan Plateau, is an ideal region for understanding the tectonic evolution of the Anyemaqen Ocean.
Fengli Shao, Y. Niu, Yi Liu, Shuo Chen, Juanjuan Kong, Meng Duan   +5 more
semanticscholar   +1 more source

Sediment‐stressed reefs over the past 420 Myr

The Depositional Record, Volume 12, Issue 1, February 2026.
In order to fully elucidate the relationship between siliciclastic sedimentation and reef development, there needs to be a significant step change in how we record ancient and recent reefs. Only through the collection of constrained quantitative data, we can progress beyond the largely conjectural associations postulated for many ancient reefal systems.
Tanja Unger, Stephen W. Lokier, Markus Aretz, Matthieu Saillol, Adrian Immenhauser   +4 more
wiley   +1 more source

Petrogenetic and geochemical characteristics of some auriferous granitoids in the Kumasi Basin, Ghana: Implications for geodynamic settings and controls of orogenic gold mineralization in the Edikan Gold Mine

Deep Underground Science and Engineering
The Edikan Mine, which consists of Fobinso and Esuajah gold deposits, lies within the Asankrangwa Gold Belt of the Birimian Supergroup in the Kumasi Basin.
Emmanuel D. Sunkari, Obed Oppong, Theophilus K. Agbenyezi   +2 more
doaj   +1 more source

Two‐Stage Mafic‐Felsic Magma Interactions and Related Magma Chamber Processes in the Arc Setting: An Example From the Enclave‐Bearing Calc‐Alkaline Plutons, Chinese Altai

Geochemistry, Geophysics, Geosystems, 2021
A systematic data set of petrography, mineralogy, geochronology, and geochemistry is reported for typical arc granitoids and associated mafic microgranular enclaves (MME) from the Chinese Altai, Central Asian Orogenic Belt.
Xing Cui, Min Sun, Guochun Zhao, Yunying Zhang, Jinlong Yao   +4 more
doaj   +1 more source

Fracture‐Assisted Pressure Solution Creep of Granite: An Example From the Mont Blanc Massif, Western Alps

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract The Mont Blanc granite, as other deformed granites, has splitting properties attributed to two perpendicular planes: one formed by aligned fractures and the other by aligned micas in foliation planes. It is shown that this microstructure results from ductile deformation with stress‐driven dissolution of quartz and feldspar that passively ...
Jean‐Pierre Gratier, Luca Menegon, François Renard   +2 more
wiley   +1 more source