Results 81 to 90 of about 3,793 (208)

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

Chemistry of Hydrothermally Destabilized Rare-Metal and Radioactive Minerals in Deformed A-Type Granite in the Vicinity of Nugrus Shear Zone, South Eastern Desert, Egypt

Resources
In the Wadi Nugrus area, south Eastern Desert of Egypt, A-type granite is highly deformed in a prominent NW-SE trending shear zone, likely related to the Najd shear system.
Adel A. Surour, Amira M. El-Tohamy, Gehad M. Saleh   +2 more
doaj   +1 more source

Petrogenetic and mineralogical constraints in metamorphic-plutonic complex of N-Bijar, Kordestan, Iran [PDF]

پترولوژی
IntroductionThe Sanandaj-Sirjan metamorphic-magmatic zone (SSZ) (with 1500 km in length and 150-200 km in width) along with the Urumieh-Dokhtar magmatic arc as well as the folded-thrust belt of Zagros comprise the Zagros orogeny in south west of Iran ...
Maryam Bafandeh, Abbas Asiabanha, Mohsen Nadrabady   +2 more
doaj   +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]

, 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, Parsons, A.J., Philllips, R.J., Searle, M.P., Wallis, D.   +4 more
core   +2 more sources

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

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)

Geodinamica 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)

Геодинамика 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, A. V. Travin, N. N. Kruk   +2 more
doaj   +1 more source

Late Cretaceous to Eocene Sedimentary Source Change and Tectonic Evolution of Nanao Event in Taiwan: Implications From Detrital Zircon U‐Pb Geochronology

Tectonics, Volume 44, Issue 8, August 2025.
Abstract The tectonic evolution of the Taiwan orogenic belt from the Mesozoic to the Cenozoic remains unclear because of a lack of deterministic geochronological data for unraveling stratal sequences. The precise timing of the Nanao event is crucial for uncovering this evolution and is the focus of this study.
Chiu‐Lien Chang, Yue‐Gau Chen, Wei‐Hao Hsu, Wen‐Shan Chen   +3 more
wiley   +1 more source

Tourmaline 40Ar/39Ar chronology of tourmaline-rich rocks from Central Iberia dates the main Variscan deformation phases [PDF]

, 2009
During crustal thickening, metapelites taken to depth release boron-bearing hydrothermal fluids because of progressive heating and dehydration. These fluids swiftly percolate upwards, especially if the crust is being actively deformed, to form tourmaline
Bea, F., Gil-Crespo, P. P., Montero, P., Pesquera, A., Torres-Ruiz, J.   +4 more
core   +7 more sources

Structural Architecture of the Cenozoic Kallianos (Post‐?)Orogenic Vein‐Hosted Au‐Ag‐Te Deposit and Its Relationship to the North Cycladic Detachment System, Greece

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 8, August 2025.
Abstract The Kallianos Au‐Ag‐Te deposit is a Cenozoic orogenic‐style deposit on Evia, hosted in the Cycladic Blueschist Unit. Integrated field observations and isotopic data illustrate a connection between the structural architecture that hosts mineralization in the deposit and the regional stress field associated with a crustal‐scale detachment, the ...
L. Hamel, T. A. Ducharme, D. A. Schneider, B. Grasemann   +3 more
wiley   +1 more source