Results 41 to 50 of about 1,204 (166)

Garnet–Clinopyroxene Double‐Layered Coronae in a Metagabbronorite From the High‐Grade Metamorphic Gföhl Unit, Moldanubian Zone

Journal of Metamorphic Geology, Volume 44, Issue 4, Page 311-336, May 2026.
ABSTRACT This study investigates garnet–clinopyroxene double‐layered coronae in a metagabbronorite from the high‐grade metamorphic Gföhl Unit (Bohemian Massif). The coronae formed at the interfaces between relic magmatic orthopyroxene, still preserved in the cores of the coronae, and the plagioclase‐rich rock matrix.
Rene Asenbaum, Tereza Nemeškalová, Martin Racek, Vojtěch Janoušek, Julian Portenkirchner, Rainer Abart   +5 more
wiley   +1 more source

Constraining the Relative Chronology of Repeated Large Earthquakes in the Longmen Shan Thrust Belt, Eastern Tibetan Plateau

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract The Yingxiu–Beichuan Fault Zone (YBFZ), located in the Longmen Shan Thrust Belt (LSTB) on the eastern Tibetan Plateau, is highly seismically active. However, direct evidence of large earthquakes at depth is scarce. Here, we present rock magnetic, microstructural, and geochemical analyses of four fault zones from the Wenchuan Earthquake Fault ...
Lei Zhang, Haibing Li, Zhiming Sun, Yong Cao, Chunrui Li, Huan Wang, Yong Zheng, Jialiang Si   +7 more
wiley   +1 more source

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

High‐Titanium Zircon Rims in Rhyolite – A Reflection of Adiabatic Ascent?

Geological Journal, Volume 61, Issue 4, Page 1029-1040, April 2026.
The ascent of granitic magma from source to emplacement is rapidly achieved through dyking, resulting in negligible heat loss to the surrounding wallrock (i.e., adiabatic). Zircon growth during ascent can record the changing magma conditions including adiabatic cooling and heating, resulting in high titanium rims on low titanium cores without ...
Carson Kinney, Holden Little, Chris Yakymchuk   +2 more
wiley   +1 more source

Climax of Late Paleoproterozoic Rift‐Related Magmatism in the Columbia Supercontinent: Insights From a 1.77–1.76 Ga Large Igneous Province of the Dunhuang Block, Northwest China

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.
Abstract Widespread mafic magmatism at ca. 1.8–1.7 Ga across fragments of the Columbia supercontinent records a transition in the Earth's supercontinent cycle. The paleogeographic position of the Dunhuang Block in northwestern China within Columbia, and its role in this tectonic reorganization, remain controversial.
Masumeh Sargazi, Chuan‐Lin Zhang, Xian‐Tao Ye, Zhi‐Hao Song, Hong‐Ran Wang   +4 more
wiley   +1 more source

Structure of the North‐Central Chile Subduction Zone From Local Earthquake Tomography

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract The fluid cycle in subduction zones prescribes large parts of its structure and seismogenic behavior. Background seismicity inside the downgoing slab is linked to fluid release from dehydration reactions, whereas fluid overpressure along the plate interface can alter interplate coupling, megathrust earthquakes, and the presence or absence of ...
Nicolás Hernández‐Soto, Christian Sippl, Matthew Miller, Dietrich Lange, Frederik Tilmann, Diego González‐Vidal, Juan Carlos Baez, Anne Socquet, Marcos Moreno   +8 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

Variable Oceanic Crust Accretion at a Slow‐Spreading Ridge: A Vp/Vs Ratio Evidence Across the Southwest Sub‐Basin of the South China Sea

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract The opening of the Southwest Sub‐basin (SWSB) of the South China Sea was slow‐spreading and has been propagated toward the southwest. Yet, the structural variability and magmatic accretion process of the SWSB are still enigmatic. Here, utilizing a wide‐angle seismic profile traversing the central segment of the SWSB, we obtain detailed S‐wave ...
Ye Yuan, Yuhan Li, Yongjian Yao, Minghui Zhao, Jiazheng Zhang, Enyuan He, Lianjun Li   +6 more
wiley   +1 more source

Mineralogy, geochemistry and conditions of formation Permian-Triassic intraplate granitoids of Sinyushenskiy Massif (Gorny Altai)

Литосфера, 2016
The data on geological settings, ages, special features of mineralogy and composition of Sinyushensky Massif granitoids the in north-west part of the Gorny Altay region.
N. N. Kruk, O. A. Gavrushkina, C. G. Shokalskiy, A. V. Travin   +3 more
doaj   +2 more sources

Microstructural Controls on Geothermal Reservoir Host Rock Responses to Elevated Pressures and Temperatures

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract Rock microstructure controls geothermal fluid flow within reservoirs hosted in active volcanic environments and as such it is necessary to constrain the microstructural evolution of rocks at elevated pressure and temperature conditions. Despite Andean geothermal systems hosting numerous high enthalpy geothermal plays, there remains a paucity ...
V. Mura, J. Browning, G. Arancibia, D. Healy, N. Farrell, N. Bigaroni, C. Pineda, D. Morata, J. Mecklenburgh   +8 more
wiley   +1 more source