Results 51 to 60 of about 3,139 (203)
Terra Nova, Volume 37, Issue 5, Page 316-323, October 2025.ABSTRACT Laser ablation U–Pb single zircon geochronology was applied to four peraluminous granite and granodiorite samples from the Bassiès pluton in the Central Pyrenees (France) yielding a wide range of concordant ages from early Carboniferous (Tournaisian, 351 Ma) to early Permian (Artinskian, 285 Ma).
Stephan Schnapperelle +5 more
wiley +1 more source
Bulletin de l'Association de géographes français, 1978 Résumé. - Alors qu'en régions continentales le granite à biotite et/ou muscovite est une roche résistante, il fait figure de roche moins résistante en conditions littorales (Bretagne, Irlande).
openaire +2 more sources
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 9, September 2025.Abstract The Himalaya‐Karakoram‐Tibet (HKT) orogen provides an unrivaled opportunity to study the dynamic linkages between deep and surface processes during collisional orogenesis. However, these efforts are hindered by conflicting interpretations on the number and timing of collisional events, and the timing of crustal thickening and associated ...
Ian W. Hillenbrand, Victor E. Guevara
wiley +1 more source
Geochemistry, Geophysics, Geosystems, 2021 Revealing the timescales of metamorphic and anatectic processes is central to our understanding of tectonic evolution of collisional orogens. High‐temperature migmatites and leucogranites are well exposed in the Himalayan orogenic core, making it an ...
Huixia Ding +3 more
doaj +1 more source
Orogeny, migmatites and leucogranites: A review
Journal of Earth System Science, 2001 The type ofP-T-t path and availability of fluid (H2O-rich metamorphic volatile phase or melt) are important variables in metamorphism. Collisional orogens are characterized by clockwiseP-T evolution, which means that in the core, where temperatures exceed the wet solidus for common crustal rocks, melt may be present throughout a significant portion of ...
openaire +2 more sources
Synchronous N-S and E-W extension at the Tibet-to-Himalaya transition in NW Bhutan [PDF]
, 2015 Despite ~50 Myr of continuous continent-continent collision, contractional structures in the Himalayan-Tibetan orogen are today limited to the northern and southern margins of the system, while extension dominates much of the interior.
Cooper, F.J. +4 more
core +3 more sources
Raising the Roof of the World: Intra‐Crustal Asian Mantle Supports the Himalayan‐Tibetan Orogen
Tectonics, Volume 44, Issue 9, September 2025.Abstract The Himalayan‐Tibetan orogen formed via the ongoing collision of India and Asia. Its colossal elevations stem from buoyant crustal roots that doubled in thickness during continental collision, widely believed to result from Indian crust under‐thrusting its Asian counterpart and Asian crustal thickening. However, a single crustal layer of up to
P. Sternai +11 more
wiley +1 more source
Geologica Acta, 2017 Magnetic susceptibility (MS) has been measured in Variscan granites from central Spain. They yield values in the order of 15 to 180μSI units for S- and I-type granites, indicating that both types belong to the ilmenite series.
C. VILLASECA +2 more
doaj
Relationships between magmatism and extension along the Autun-La Serre fault system in the Variscan Belt of the eastern French Massif Central [PDF]
, 2011 International audienceThe ENE-WSW Autun Shear Zone in the northeastern part of the French Massif Central has been interpreted previously as a dextral wrench fault.
Choulet, Flavien +3 more
core +2 more sources
Journal of Quaternary Science, Volume 40, Issue 6, Page 958-976, August 2025.ABSTRACT Des‐Cubierta Cave, part of the Calvero de la Higuera complex, is situated in the intramountainous upper valley of the Lozoya River within the Guadarrama Range. The cave's geological, palaeontological, and archaeological record reveals a complex history of sedimentary and anthropogenic processes spanning hundreds of thousands of years ...
David Manuel Martín‐Perea +19 more
wiley +1 more source