Results 81 to 90 of about 806 (206)
Post-ridge-subduction acceleration of the Indian plate induced by slab rollback
Solid 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
Geophysical Research Letters, Volume 52, Issue 18, 28 September 2025.Abstract The genesis of high‐Nb basalts (HNB) in subduction zones remains controversial, attributed to melting products of metasomatized mantle linked to recent or ancient subduction events. Here we present radiogenic isotope and molybdenum compositions for post‐subduction HNBs and adakites from Baja California, Mexico. The HNBs show more radiogenic Sr‐
Hai‐Quan Liu +7 more
wiley +1 more source
Journal 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
, 2013 Coeval potassic adakite-like and shoshonitic felsic intrusions in the western Yunnan province of SW China are spatially and temporally associated with Eocene–Oligocene shoshonitic mafic volcanic rocks.
Lu, Yong-Jun +10 more
core +2 more sources
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 9, September 2025.Abstract The Andean margin of Central Chile (∼32°40′–34°30′S) records abundant Cenozoic arc magmatic activity with variable compositional characteristics. This is examined through the analysis of an extensive database of new and published whole‐rock geochemistry and Sr‐Nd isotopic compositions, in addition to zircon Hf and O isotopic compositions.
M. Muñoz‐Gómez +10 more
wiley +1 more source
, 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
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 9, September 2025.Abstract Volcanic material preserved in marine and lacustrine sediments is a key high‐resolution archive for studying the past eruptive history of volcanic regions. In this work, we use the geochemical and isotopic compositions of marine volcanic glass shards, the thicknesses, and age models of tephra layers preserved in the deep sediments of the ...
Mathilde Bablon +10 more
wiley +1 more source
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 7, July 2025.Abstract A diverse range of dikes in the western Lhasa–Qiangtang collision zone provides constraints on the evolution of post‐collisional tectonomagmatic processes and the growth of the Tibetan Plateau. We report geochronological, geochemical, and Sr–Nd–Hf isotopic data for granitic dikes in the Rebang area of the Northern Lhasa Block, northern Tibet ...
Yao Xiao +6 more
wiley +1 more source
, 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
Palaeoproterozoic adakite- and TTG-like magmatism in the Svecofennian orogen, SW Finland
, 2021 The Palaeoproterozoic Svecofennian orogen in the Fennoscandian shield is an arc accretionary orogen that was formed at c. 1.92-1.86Ga. Arc accretion, magmatism and the subsequent continent-continent collision thickened the crust up to c.
Eklund, O. +4 more
core