Results 71 to 80 of about 3,855 (216)

Tracing Orogenic Evolution From Multi‐Detrital Mineral Records: U‐Pb Geochronology and Trace‐Element Constraints From Glacial Diamictites

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract Integrating multiple detrital mineral systems provides a powerful framework for reconstructing source‐region tectonothermal evolution because different minerals record complementary aspects of magmatic and metamorphic processes. Glacial diamictites are particularly valuable for this approach because extensive glacial erosion can sample broad ...
Lijun Wang, Shoufa Lin, Wenjiao Xiao, Cees R. van Staal, Chris R. M. McFarlane, Zhijun Niu, Fang Song, Qihang Wu   +7 more
wiley   +1 more source

Geology of high- to ultrahigh-temperature granulites from central Madurai block, southern India ; with emphasis on the evolution of Grt-Opx-Crd granulite [PDF]

, 2002
The geology of Ganguvapatti area situated at the central Madurai block of southern India consisting of varous high-grade metamorphic rock types. This contribution briefly describes the geology, field occurrences and petrography of metamorphic rock from ...
Saieev, K, Osanai, Yasuhito
core  

Metamorphism and zircon U-Pb dating of high-pressure pelitic granulites from glacial moraines in the Grove Mountains, East Antarctica [PDF]

, 2018
The Grove Mountains are an inland continuation of the Prydz Belt in East Antarctica. Detailed metamorphic petrological and zircon U-Pb geochronological studies are performed on the high-pressure (HP) pelitic granulites from glacial moraines in the Grove ...
Wei, Wang, Yue, Zhao, Xiaochun, Liu, Longyao, Chen   +3 more
core   +1 more source

Mantle Wedge Metasomatism During Subduction Initiation: Mineral Transformations and Fluid Fluxes (BOIC Ophiolite, Newfoundland)

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract The soles of ophiolites preserve slices of oceanic crust metamorphosed to amphibolite‐ to granulite‐facies conditions beneath heavily deformed mantle peridotites, providing key records of fluid and mass transfer across nascent subduction interfaces.
Louise Mérit, Philippe Agard, Loïc Labrousse, Benoît Dubacq, Cécile Prigent, Carl Guilmette, Jean H. Bédard, François Fournier‐Roy, Horst R. Marschall, Axel Gerdes, Benjamin Lefeuvre, Alana Hinchey   +11 more
wiley   +1 more source

Dataset of Mineral chemistry and geochronology of intermediate granulites (both garnet-bearing and garnet-free two-pyroxene granulites) and charnockites (garnet-bearing and garnet-free charnockites) from the Shevaroy and Namakkal Blocks in the Southern Granulite Terrane, India

This dataset provides mineral chemistry and LA-ICP-MS zircon U-Pb ages for intermediate granulites (both garnet-bearing and garnet-free two-pyroxene granulites) and charnockites (garnet-bearing and garnet-free charnockites) from the Shevaroy and Namakkal
Long-Long Gou
core   +1 more source

Subduction Recycling and Closure of the Paleo‐Asian Ocean in the Beishan Orogen: Constraints From the Niujuanzi Ophiolitic Mélange and Associated Intrusions

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract Ophiolitic mélanges and associated intrusions provide key archives for reconstructing the evolution of ancient ocean basins and subduction‐related mantle modification. The Hongliuhe–Niujuanzi–Xichangjing ophiolitic mélange in the central Beishan Orogen preserves important records of the Paleo‐Asian Ocean, but the timing of oceanic subduction ...
Yujia Song, Xijun Liu, Yao Xiao, Honghu Zeng, Pengde Liu   +4 more
wiley   +1 more source

TEORES DE POTÁSSIO, URÂNIO, TÓRIO E TAXA DE PRODUÇÃO DE CALOR RADIOGÚNICO NO EMBASAMENTO ADJACENTE ÀS BACIAS SEDIMENTARES DE CAMAMU E ALMADA, BAHIA, BRASIL

Brazilian Journal of Geophysics, 2005
O embasamento adjacente às bacias sedimentares de Camamu e Almada é caracterizado, principalmente, por rochas das facies granulito e anfibolito, com idades arqueanas e paleoproterozoicas, pertencentes ao orógeno Itabuna-Salvador-Curaçá.
Najara Santos Sapucaia, Roberto Max de Argollo, Johildo Salomão Figueiredo Barbosa   +2 more
doaj   +1 more source

The Wilson Cycle of the North Altyn Ocean: A Record of Subduction Initiation, Slab Rollback, and Final Closure

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract The North Altyn ophiolitic belt was formed by the subduction–closure of the Altyn segment of the Proto–Tethys Ocean and recorded the accretion of Tarim to northern Gondwana, but the timing of initial subduction and detailed tectonic transition processes remain poorly constrained. This study reports the oldest Phanerozoic magmatic record of 537 
Long Chen, Jinlong Yao, Guochun Zhao, Yigui Han, Qian Liu, Donghai Zhang, Xijun Zhao, Hang Yang, Wei Li   +8 more
wiley   +1 more source

P-T Conditions of Metamorphism and Fluid Inclusion Characteristics of the Coorg Granulites, Karnataka [PDF]

, 1994
Charnockites and basic granulites occur extensively around Coorg in Western Ghats. Minor metasedimentary rocks like kyanite/sillimanite bearing gneisses and ironstone also occur. A set of late dolerite dykes cross cut all the lithologies.
Venugopal, L., Devaraju, J., Basavalingu, B., Srikantappa, C.   +3 more
core  

Ultrametamorphism in Precambrian granulite terranes: evidence from Mg-AI granulites and calc-silicate granulites of the Eastern Ghats, India

, 1995
High Mg-Al granulites and calc-silicate granulites provide evidence for ultra-high temperatures of metamorphism (ca. 1000°C) at moderate pressures (9-10 kbar) in the Eastern Ghats Belt, India.
Dasgupta, Somnath, Sengupta, Pulak
core   +1 more source