Results 81 to 90 of about 672 (207)

Seismological Constraint of the Fossil Suture Zone: A Case Study in the Eastern Central Asian Orogenic Belt

open access: yesGeophysical Research Letters, Volume 52, Issue 8, 28 April 2025.
Abstract The tectonic attributes of the fossil suture zone are crucial for reconstructing tectonic evolution, but they remain contentious due to inadequate crustal constraints. This study introduces a high‐resolution crustal structure derived from a cost‐effective short‐period dense seismic array across fossil suture zones between the Xing'an and the ...
Dong‐Xue Pan   +3 more
wiley   +1 more source

Post-ridge-subduction acceleration of the Indian plate induced by slab rollback

open access: yesSolid Earth Sciences, 2018
The driving forces of plate motion, especially that of its sudden change over time, has long been debated. During the closure of an old ocean, the subduction process of the mid-ocean ridge provides valuable clues to quantitative evaluation of the driving
Wei-dong Sun   +11 more
doaj   +1 more source

Linking Cenozoic Magmatism in the North‐Central Tibetan Plateau With Plateau Growth

open access: yesGeochemistry, Geophysics, Geosystems, Volume 26, Issue 4, April 2025.
Abstract Accurate reconstruction of paleo‐crustal and lithospheric thicknesses is crucial for understanding the deep geodynamic processes driving the uplift and growth of the Tibetan Plateau (TP) and their association with Cenozoic magmatism. We reconstruct the Cenozoic crustal thickness evolution of the north‐central TP using a machine learning model ...
Peng Guo, Ting Yang, Wei‐Qiang Ji
wiley   +1 more source

Petrogenesis of Granitoids, U-Pb zircon geochronology, Sr-Nd Petrogenesis of granitoids, U-Pb zircon geochronology, Sr-Nd isotopic characteristics, and important occurrence of Tertiary mineralization within the Lut block, eastern Iran

open access: yesJournal of Economic Geology, 2012
Tertiary intrusive granitoids within the Lut block in the Khorasan Razavi and South Khorasan provinces are mainly sub-volcanic with porphyry texture and their composition varies from granite to diorite but monzonite is dominant.
Mohammad Hassan Karimpour   +3 more
doaj   +3 more sources

Crustal Thickness Evolution Controls the Formation of Porphyry Cu Deposits in Collisional Orogens: An Example from Central Tethys

open access: yesActa Geologica Sinica - English Edition, Volume 99, Issue 2, Page 522-531, April 2025.
Abstract The key factor that controls the genesis of porphyry Cu deposits (PCDs) in collisional orogens remains a debated topic. This study employs whole‐rock La/Yb proxies to quantitatively constrain the spatial and temporal variations in crustal thickness of the South Armenian–Iranian magmatic belt (SAIMB) within the Zagros orogen (central Tethys ...
Xuhui WANG   +4 more
wiley   +1 more source

Metasomatic interactions between slab-derived melts and depleted mantle : insights from xenoliths within Monglo adakite (Luzon arc, Philippines)

open access: yes, 2008
The Monglo adakite contains mafic and ultramafic xenoliths, which probably originated from the mantle section of an Early Cretaceous supra-subduction zone ophiolitic complex located within the Luzon are crust.
Payot, Betchaida D.   +11 more
core   +1 more source

Origin of the Paleocene Granite in the Lhasa Terrane of the Qinghai‐Tibet Plateau and Its Constraints on the Evolution of the Neo‐Tethys Ocean

open access: yesEngineering Reports, Volume 7, Issue 3, March 2025.
Large‐scale Cenozoic magmatic rocks in the southern Qinghai‐Tibet Plateau show a key chapter of geological evolution, especially the northward subduction and gradual melting in the Neo‐Tethys Sea plate during the collision between the Asian continent and the Indian plate, which reveals its geological importance.
Hu Yang   +7 more
wiley   +1 more source

Evidence of Magma Reservoirs Beneath Volcanoes in Northern Sulawesi and the Molucca Sea From Regional Earthquake Tomography

open access: yesGeophysical Research Letters, Volume 52, Issue 3, 16 February 2025.
Abstract We present a new 3‐D P‐wave velocity model of the crust and upper mantle beneath Sulawesi from regional earthquake body wave tomography. The arrival time data were sourced from the Agency for Meteorology, Climatology, and Geophysics (BMKG) Indonesian earthquake catalog for the period 2018 through to 2023, which is based on records from 126 ...
Pepen Supendi   +6 more
wiley   +1 more source

Paleocene Adakite Bearing Au-Fe Intrusive Rocks, Mezcala, Mexico: Evidence from Geochemical Characteristics

open access: yes, 2003
International audienceThe Au–Fe mineralized granitoids at Mezcala district have a porphyry texture with a quartz+feldspar microcrystalline matrix and phenocrysts of plagioclase, quartz (with reaction rims), hornblende and biotite.
Carrillo-Chávez, A.   +5 more
core   +1 more source

Adakite-like signature in volcanic rocks associated with the Oro del sur Au - (Cu) epithermal deposit, Southern Precordillera, Argentina [PDF]

open access: yes, 2011
The Oro del Sur deposit is located in the southern part of the Precordillera of Mendoza Province, Argentina (32°30'S, 69°05'W) within the flat-slab subduction segment.
Carrasquero, Silvia Irene   +5 more
core   +1 more source

Home - About - Disclaimer - Privacy