Results 41 to 50 of about 45,840 (156)

Tectonic Evolution and Crustal Growth of the East Kunlun Orogen, NW China: Insights From the Late Permian–Triassic Granitoids

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract The East Kunlun Orogen (EKO) on the northern margin of the Tibetan Plateau experienced complex Late Paleozoic–Early Mesozoic tectono‐magmatic activities associated with the subduction and closure of the Paleo‐Tethys Ocean. Controversies remain regarding the timing and processes of the transition from subduction to collision and post‐collision,
Xiaodong Wang   +5 more
wiley   +1 more source

Middle Cretaceous Andean‐Type Arc Evolution in the Sanandaj–Sirjan Zone (Shalair Valley), Iraq: New Geochronological and Geochemical Constraints

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract The middle Cretaceous granitoid plutons of the Shalair Valley, situated in northeastern Iraq, constitute a principal magmatic component of the Sanandaj–Sirjan Zone within the northwestern segment of the Zagros Orogenic Belt. Among these plutons, the equigranular Aulan body (AG) and the porphyritic Laladar body (LG) were crystallized at 111.0 ± 
Imad Kadhim Abdulzahra   +3 more
wiley   +1 more source

Syn‐ to Post‐Collisional Tectonic History of the Paleo‐Tethyan Orogenic Belt: Insights From Triassic Igneous Rocks in the North–Central Tibetan Plateau, China

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract The closure of the Paleo‐Tethys Ocean was one of the most important global geological events which formed the framework of the East Asian continent during the early Mesozoic. The Longmu Co‐Shuanghu suture zone is considered to record closure of the main basin of the Paleo‐Tethys Ocean.
Jinyong Li   +6 more
wiley   +1 more source

Rapid Slab Rollback Drives Early Cretaceous Back‐Arc Extension in NE China: Implication for Crustal Growth and Episodic Porphyry Mineralization

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract The subduction of the Paleo‐Pacific Plate beneath the NE Asian continental margin induced extensive magmatism, providing an excellent opportunity to investigate the interplay between plate dynamics, arc magmatism, continental crust formation, and porphyry mineralization.
Honghui Wang   +5 more
wiley   +1 more source

The Paleo‐Tethys Suture Zone in the Afghan Hindu Kush‒Pamir: Geo‐Thermochronology, Geochemistry, Tectonics

open access: yesTectonics, Volume 45, Issue 3, March 2026.
Abstract In the Afghan Hindu Kush, the 223–209 Ma (≤800°C) Salang batholith is part of the Silk‐Road magmatic arc that was built on ∼40‐km‐thick Turan‐Karakum block continental crust. The batholith constitutes the hanging wall of the Herat‐Panjshir‐Badakhshan—the Paleo‐Tethys—suture zone, vestige of the subducted Paleozoic‐early Mesozoic Paleo‐Tethys ...
Lothar Ratschbacher   +8 more
wiley   +1 more source

Rapakivi K‐Feldspar Megacrysts in Monzogranitic Porphyry: Evidence for Magma Recharge and Mush Rejuvenation

open access: yesGeochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract The formation, storage, and evolution of granitic magmas are fundamental processes driving the growth of continental crust. While traditionally attributed to crystal fractionation in high‐melt fraction magma chambers, the model invoking low‐melt fraction crystal mushes has gained wide acceptance.
Wang Li   +5 more
wiley   +1 more source

Origin of Mafic Microgranular Enclaves (MMEs) and Their Host Rocks of the Cretaceous Xiaojiang-Liangnong Granitic Complexes in the Southeast Coast Magmatic Belt, S China

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2009
Cretaceous Late Yanshanian (LY) magmatism produced large amounts of I-type granitoids in the Southeast Coast Mag matic Belt (SCMB). I-type granitoids from Xiaojiang-Liangnong complexes (N Zhejiang) in the northern part of this belt are characterized by ...
Pei-Shan Hsieh   +3 more
doaj   +1 more source

Top-down structures of mafic enclaves within the Valle Fértil magmatic complex (Early Ordovician, San Juan, Argentina)

open access: yes, 2021
Magmatic structures related to the mechanical interaction between mafic magmas and granitoids have been studied in the Valle Fértil calc-alkaline igneous complex, Argentina.
Martino, Roberto Donato   +7 more
core  

A Tale of Evolution of the Central Indian Tectonic Zone (CITZ) With Glimpses on Pre‐Suture Plate Margin Depositional History

open access: yesGeological Journal, Volume 60, Issue 2, Page 404-430, February 2025.
Present study explains the current understanding about the complex evolution of the CITZ. New zircon geochronological data from Mahakoshal Basin is used to document the pre‐suture history of the southern margin of Bundelkhand Craton where Mahakoshal Basin developed as a back‐arc basin and remained open even after 1700 Ma.
A. Sharma   +3 more
wiley   +1 more source

COMPOSITIONAL FEATURES OF THE EARLY PALEOZOIC GRANITOIDS OF THE PANGHAZJILGA COMPLEX, EASTERN PART OF THE CENTRAL PAMIR, TAJIKISTAN

open access: yesГеодинамика и тектонофизика
The Panghazjilga igneous complex in the eastern part of the Central Pamirs is one of the few Cambrian intrusive formations in the region. In our study, we address a number of questions that contribute to understanding the nature of the rocks in the ...
Sh. A. Odinaev   +7 more
doaj   +1 more source

Home - About - Disclaimer - Privacy