Results 81 to 90 of about 3,780 (205)

Late Svecofennian leucogranites of southern Finland : Chronicles of an orogenic collapse [PDF]

open access: yes, 2011
Leucogranite magmatism occurred in southern Finland during the later stages of the Paleoproterozoic Svecofennian orogeny. The leucogranites are considered to have formed from pre-existing crustal rocks that have undergone anatexis in the extensional ...
Kurhila, Matti
core  

The Tectonic Responses in the Overriding Plate During the Tethyan Convergence and the Progressive Extrusion Process in Sundaland: Insights From the Wuliangshan Massif, SE Tibetan Plateau

open access: yesGeochemistry, Geophysics, Geosystems, Volume 26, Issue 7, July 2025.
Abstract The overriding plate commonly accumulates less strain than the subducted plate during continental collision. Analyzing plate interactions from the perspective of the overriding plate provides important insights into orogenic dynamics. In the southeastern Tibetan Plateau, the Wuliangshan massif, as a key region of the overriding plate, records ...
Qinying Wu   +11 more
wiley   +1 more source

On the geodynamics of the Alpine collisional granitoids from Central Anatolia: petrology, age and isotopic characteristics of the granitoids of the Ekecikdağ Igneous Association (Aksaray/Turkey)

open access: yesGeodinamica Acta, 2019
Granitoids of the Ekecikdağ Igneous Association (Central Anatolia/Turkey) are products of collisional–post-collisional magmatism in the Ekecikdağ area. These granitoids are granodiorite, microgranite and leucogranite.
Fatma Toksoy-Köksal
doaj   +1 more source

DURATION OF GRANITOID MAGMATISM IN PERIPHERAL PARTS OF LARGE IGNEOUS PROVINCES (BASED ON 40AR/39AR ISOTOPIC STUDIES OF ALTAI PERMIAN-TRIASSIC GRANITOIDS)

open access: yesГеодинамика и тектонофизика, 2017
In large igneous provinces (LIP) of fold areas, granitoid rocks are dominant, while mantle-derivated rocks play a subordinate role in rock formation. If magma emissions are impulsive, it may take 25–30 million years for a LIP to form and take shape.
O. A. Gavryushkina   +2 more
doaj   +1 more source

Nonlinear phenomena in fluids with temperature-dependent viscosity: an hysteresis model for magma flow in conduits

open access: yes, 2002
Magma viscosity is strongly temperature-dependent. When hot magma flows in a conduit, heat is lost through the walls and the temperature decreases along the flow causing a viscosity increase. For particular values of the controlling parameters the steady-
Costa, Antonio, Macedonio, Giovanni
core   +1 more source

Lithospheric Unzipping Explaining Hot Orogenesis During Continental Subduction

open access: yesTectonics, Volume 44, Issue 7, July 2025.
Abstract Phanerozoic accretionary orogens typically contain upper crustal nappes derived from subducted lithosphere—oceanic or continental—that display (ultra‐)high‐pressure, low‐temperature ((U)HP‐LT) metamorphism. Surprisingly, such orogens often also contain coeval continent‐derived nappes that underwent “Barrovian” (MP‐HT) syn‐burial metamorphism ...
Douwe J. J. van Hinsbergen   +2 more
wiley   +1 more source

Structure of late Variscan Millevaches leucogranite massif in the French Massif Central: AMS and gravity modelling results [PDF]

open access: yes, 2006
In the Limousin area, Variscan leucogranitic plutons are spatially associated with normal faults and major strike-slip shear zones that are a continuation of the South Armorican shear zone. Our study focuses on the large N-S-trending Millevaches granitic
Arthaud   +46 more
core   +4 more sources

Structures and Leucogranites in the Eastern Himalayan Orogen From Reprocessed INDEPTH‐I Deep Seismic Reflection Profile

open access: yesTectonics, Volume 44, Issue 6, June 2025.
Abstract The INDEPTH‐I seismic reflection transect provides a unique data set for understanding active mountain‐building processes during continental collision in the Himalaya and has played a key role in the development of ductile extrusion and channel flow concepts.
Hongqiang Li   +5 more
wiley   +1 more source

Géochronologie revisitée du dôme du Léon (Massif armoricain, France) [PDF]

open access: yes, 2009
National audienceDe nouvelles datations réalisées sur les principaux ensembles granitiques et métamorphiques du Léon permettent de préciser l'histoire de ce domaine de la chaîne hercynienne.
Cocherie, Alain   +4 more
core   +1 more source

Spatial variation in exhumation rates across Ladakh and the Karakoram: New apatite fission track data from the Eastern Karakoram, NW India [PDF]

open access: yes, 2016
Characterization of low-temperature cooling histories and associated exhumation rates is critical for deciphering the recent evolution of orogenic regions. However, these may vary significantly over relatively short distances within orogens.
Carter, Andrew   +4 more
core   +2 more sources

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