Results 61 to 70 of about 3,780 (205)

Sur le comportement des leucogranites (ex. « granulites ») en milieu littoral (Leucogranites in coastal conditions)

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

The impact of vegetation on fractionation of rare earth elements(REE) during water–rock interaction [PDF]

, 2006
Previous studies on waters of a streamlet in the Vosges mountains (eastern France) have shown that Sr and rare earth elements (REE) principally originate from apatite dissolution during weathering. However, stream water REE patterns normalized to apatite
Aubert, Dominique, Chabaux, F., Gauthier-Lafaye, François, Pierret, Marie-Claire, Probst, Anne, Steinmann, Marc, Stille, Peter, Viville, Daniel   +7 more
core   +5 more sources

Multi‐Stage Crustal Thickening, Surface Uplift, and Collision in the Western Himalaya‐Karakoram‐Tibet Orogen Revealed by Chemical Mohometry

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

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

Internal framework and geochemistry of the Carboniferous Huaco granite pluton, Sierra de Velasco, NW Argentina [PDF]

, 2018
The A-type Huaco granite pluton of the Velasco range (Sierras Pampeanas of northwest Argentina) is formed by three coeval granitic facies and contains subordinate coeval-to-late facies, as well as enclaves, dikes and stocks that show different temporal ...
Grosse, Pablo, Lozano Fernández, Rafael Pablo, Murata, Mamoru, Sardi, Fernando Guillermo   +3 more
core   +2 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, S. Pilia, S. Ghelichkhan, P. Bouilhol, A. Menant, D. R. Davies, L. Ostorero, B. Vaes, R. Esposito, E. Garzanti, S. Cloetingh, T. Gerya   +11 more
wiley   +1 more source

Paleoproterozoic crustal evolution and Mesoproterozoic overprint in the Roosevelt-Guariba Transpressive Belt, Juruena Terrain, Southeastern Amazonas, Brazil

Journal of the Geological Survey of Brazil, 2022
The Juruena Terrain (Rondônia-Juruena Province) in the southeastern Amazonas State shows a NW-SE dextral shear zones system denominated Roosevelt-Guariba Transpressive Belt (RGTB). The RGTB was generated in response to intracontinental crustal reworking,
Marcelo Esteves Almeida, Antônio Charles da Slva Oliveira, João Orestes Schneider dos Santos, Gilles Ruffet, Joseneusa Brilhante Rodrigues   +4 more
doaj   +1 more source

Syn-orogenic high-temperature crustal melting: Geochronological and Nd-Sr-Pb isotope constraints from basement-derived granites (Central Damara Orogen, Namibia) [PDF]

, 2014
Major and trace element and Nd, Sr and Pb isotope data from c. 550 Ma-old gray granites and c. 510 Ma-old red leucogranites of the high-grade central part of the Damara orogen (Namibia) indicate a dominantly deep crustal origin.
Barnes, Boynton, Brandt, Chappell, Chappell, Clemens, Clemens, England, Folkmar Hauff, Govindaraju, Gray, Haack, Haack, Haack, Hanson, Harrison, Hartmann, Hoffman, Jacob, Jacobsen, Janoušek, Jasper Berndt-Gerdes, Johannes, Johnson, Jung, Jung, Jung, Jung, Jung, Jung, Jung, Jung, Jung, Jung, Jung, Jung, Jung, Jung, Jörg Ostendorf, Kasch, Kröner, Kröner, Linnen, Longridge, Martin, McDermott, McDermott, Michard, Milisenda, Miller, Miller, Patiño Douce, Patiño Douce, Patiño Douce, Roberts, Schmidt, Schreiber, Seth, Stacey, Stefan Jung, Watson, Zen   +61 more
core   +1 more source

Stratigraphy and geomorphology of Des‐Cubierta Cave (Pinilla del Valle, Madrid, Spain): Geological insights into a Neanderthal symbolic accumulation of large crania

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, Enrique Baquedano, Juan Luis Arsuaga, César Laplana, Ana Isabel Ortega, Lucía Villaescusa, Belén Márquez, Rosa Huguet, Abel Moclán, Sandra Gómez Soler, Xabier Arroyo, Laura Rodríguez, Rebeca García‐González, M. Cruz Ortega, Jesús Masa‐Andrés, Diego J. Álvarez‐Lao, Nuria García, M. Ángeles Galindo‐Pellicena, Tom Higham, Alfredo Pérez‐González   +19 more
wiley   +1 more source

Structural, AMS and geochronological study of a laccolith emplaced during Late Variscan orogenic extension: the Rocles pluton (SE French Massif Central)

, 2006
International audienceIn the southern French Massif Central, the Rocles leucogranite of Variscan age consists of three petrographic facies; textural analysis shows that they experienced the same subsolidus deformation.
Be Mezeme, Eugène, Chen, Yan, Cocherie, Alain, Faure, Michel, Talbot, Jean-Yves   +4 more
core   +4 more sources