Results 51 to 60 of about 48,430 (124)

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

Geochemistry, 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, Xinghua Ma, Simon A. Wilde, Yong Lai, Zhenhua Zhou, Jinyu Yan   +5 more
wiley   +1 more source

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

Геодинамика 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, G. A. Kallistov, J. H. Aminov, G.-J. Tang, D. A. Akhmedov, A. K. Litvinenko, S. B. Ashuraliev, J. Sh. Yogibekov   +7 more
doaj   +1 more source

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

Tectonics, 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, Said Amin Hashimy, Hasan Malistani, Yasuhito Osanai, Jianhua Li, Zhao Yang, Bradley R. Hacker, Leander Franz, Hadi Karimi   +8 more
wiley   +1 more source

Tectonic significance of Late Precambrian calc-alkaline and alkaline magmatism in Saint Katherina Area, Southern Sinai, Egypt

Geologica Acta, 2007
Two magmatic rock suites are distinguished in the Late Precambrian basement of the Southern Sinai (NW Arabian-Nubian Shield, Egypt), namely (a) a calc-alkaline suite, and (b) an alkaline suite.
M.K. Azer
doaj   +1 more source

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

Geochemistry, 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, Xuxuan Ma, Roberto Weinberg, Liang Qiu, Zhiyong Zhu, Haibing Li   +5 more
wiley   +1 more source

Petrogenesis and tectonic implications of Early Paleozoic granitoids in the Baoshan deposit, Guangxi, South China

Frontiers in Earth Science
The Early Paleozoic tectonic setting and geological processes of the South China Block have long been a subject of debate. This study presented zircon U-Pb geochronology and Hf isotope, and whole-rock geochemical analyses for the Early Paleozoic ...
Puliang Lyu, Fang Liu, Ling Chen, Zhiguang Song, Wenen Ma, Yanlin Hou, Yanlin Hou   +6 more
doaj   +1 more source

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

Geological 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, P. P. Chakraborty, A. K. Pandey, K. Das   +3 more
wiley   +1 more source

Unraveling the role of mantle and crustal processes in Mo–Cu enrichment: Insights from the large Tongchanggou deposit, eastern Tibet

Solid Earth Sciences
Porphyry-type molybdenum (Mo)–copper (Cu) deposits are major sources of Mo and significant contributors to Cu, making them a focal point of research in the field of mineral deposits.
Jilong Jia, Long Ren, Huaying Liang
doaj   +1 more source

Sr and Nd isotopic investigations towards the origin of feldspar megacrysts in microgranular enclaves in two I-type plutons of the Lachlan Fold Belt, southeast Australia

, 2000
New Sr and Na isotopic cata are presented for several large feldspar crystals occurring in microgranular enclaves in the Swifts Creek and Bricle Track biutons, along with analyses of their host enclave grounamass and adjacent granitoid.
Maas, R., Dean, A. A., Nicholls, I. A., Waight, T. E.   +3 more
core   +1 more source

Middle to Late Ordovician flare‐up of granitoids, South Altyn Tagh: Reworking of exhumed continental crust

Geological Journal, Volume 59, Issue 8, Page 2190-2207, August 2024.
U–Pb ages, and O–Hf isotopic compositions of inherited and synmagmatic zircons are addressed to trace the source rocks and petrogenesis of a monzogranite pluton, which belong to the flare‐up of granitoids at 465–445 Ma in the South Altyn Tagh. The observations indicate that this monzogranite is mainly derived from reworking of exhumed continental crust,
Ningchao Zhou, Guochun Zhao, Jinlong Yao, Qian Liu, Yigui Han, Huishan Zhang, Guangli Ren   +6 more
wiley   +1 more source