Results 71 to 80 of about 859 (200)

Petrogenesis of Quartz Diorite in the Datian Complex, Western Yangtze Block: Evidence from U-Pb Geochronology, Geochemistry, and Sr-Nd-Hf Isotopes

Applied Sciences
This study presents integrated zircon U-Pb geochronology, whole-rock geochemistry, and Sr-Nd-Hf isotopic investigations of quartz diorite and gneissic quartz diorite from the Datian Complex along the western Yangtze Block, elucidating their petrogenesis ...
Jian Yao, Youliang Chen, Yu Wu, Jing Zhao, Luyu Huang, Minghui Yin   +5 more
doaj   +1 more source

Petrogenesis of the Riacho do Icó Stock: evidence for Neoproterozoic slab melting during accretion tectonics in the Borborema Province?

Brazilian Journal of Geology, 2020
One of the main characteristics of the Borborema Province in northeastern Brazil is the abundance of granitic domains. The Lagoa das Pedras plutonic-volcanic Complex record remnants of early to late Neoproterozoic primitive to highly evolved magmas. U-Pb
Lauro Cézar Montefalco de Lira Santos, Haroldo Monteiro Lima, Geysson de Almeida Lages, Fabrício de Andrade Caxito, José Ferreira de Araújo Neto, Ignez de Pinho Guimarães   +5 more
doaj   +1 more source

Magma and Mineral Composition Response to Increasing Slab-Derived Fluid Flux: Nevado de Longaví Volcano, Southern Chilean Andes

Frontiers in Earth Science, 2022
Nevado de Longaví volcano (NLV), in the Southern-Central Chilean Andes, has erupted during the Holocene magmas with compositions that are in several ways atypical for the region.
Daniel Sellés, Daniel Sellés, Michael Dungan, Charles Langmuir, Ana Carolina Rodríguez, Ana Carolina Rodríguez, William P. Leeman   +6 more
doaj   +1 more source

Constraining Sources of Mid‐Pleistocene to Present Explosive Volcanism in the Gulf of Alaska Using Machine Learning and Compositional Data Analysis

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract The long‐term eruptive record of a region helps better elucidate magmatic processes at depth as well as volcanic hazards at the surface. Typically, reconstructing such records is done using proximal tephrostratigraphy and linking individual tephras to source volcanoes. These records, however, can only be accurately constructed if they are both
Jordan Lubbers, Matthew Loewen, Kristi Wallace   +2 more
wiley   +1 more source

Paleomagnetic Evidence of Internal Rotation in the Eastern Qiangtang and Its Relation to Distributed Strike‐Slip Faulting in the Southeastern Tibetan Plateau

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract The southeastern Tibetan Plateau has undergone complex deformation due to the India‐Eurasia collision. Although late‐stage internal rotations are documented in the Lanping‐Simao Terrane to the south, it remains unclear whether similar processes have affected the north.
Wanlong Xu, Maodu Yan, Mathew Domeier, Chong Guan, Qiang Fu, Liang Yu, Zhichao Niu, Miaomiao Shen, Bingshuai Li, Dawen Zhang, Zunbo Xu, Yuwei Zhang   +11 more
wiley   +1 more source

Chemical Geodynamics of Granitoid Magmatism During a Pacific‐Philippine Sea Plate Transition in Southwest Japan

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Granitoid magmatism along the western Pacific margin records interactions between subduction dynamics and crust–mantle processes; however, the links between plate reorganization and magma‐source evolution remain debated. Here we integrate U–Pb zircon geochronology with Pb–Sr–Nd–Hf isotope systematics to investigate Cretaceous–Paleogene ...
Nghiem V. Dao, Tsegereda A. Yemer, Tulibako T. Mwaisuba, Chie Sakaguchi, Hiroshi Kitagawa, Katsura Kobayashi, Teruyoshi Imaoka, Eizo Nakamura   +7 more
wiley   +1 more source

Discovery of an adakite-like pluton near Dongqiyishan (Beishan, NW China) - Its age and tectonic significance

, 2012
The Dongqiyishan granitic pluton is exposed in the Eastern Beishan area, in the central part of the Southern Central Asia Orogenic Belt. SIMS U-Pb zircon dating indicates that the Dongqiyishan pluton was emplaced at 356 +/- 2 Ma. Geochemically the pluton
Wu, Tairan, Zhang, Wen,, Xu, Cao, Luo, Hongling, He, Yuankai, Zheng, Rongguo, Feng, Jicheng, Pease, Victoria,   +7 more
core   +1 more source

Geochemical indicators for cobalt-rich skarn exploration: constraints from the Pusangguo granodiorite (Gangdese) on geochemistry, zircon U-Pb geochronology and Hf-Nd-Sr isotopes

Frontiers in Earth Science
The Pusangguo skarn-type copper-polymetallic deposit in the Gangdese metallogenic belt hosts economic cobalt mineralization. An integrated study of petrography, zircon U-Pb geochronology, whole-rock geochemistry, and Sr–Nd–Hf isotopes indicates the ore ...
Zhaxi Pubu, Qiong Ci, Fuzhi Gong, Nan Chao   +3 more
doaj   +1 more source

Neoarchean Arc Magmatism and Crust Recycling in the Northern Marginal Zone of the Limpopo Complex, Zimbabwe: New Insights From Zircon U‐Pb‐Hf Isotopes of a Charnockite Suite

Geological Journal, Volume 61, Issue 3, Page 566-592, March 2026.
Charnockites with 2691–2607 Ma magmatic ages from the NMZ show arc‐magmatic geochemical signatures. They correspond to the lower‐crustal equivalent of the Chilimanzi Suite Granite in the Zimbabwe Craton. Lu‐Hf isotopic data of magmatic zircons show negative εHf(t) values (−11.18 to −2.20) with TDMC ages of 3699–3158 Ma, suggesting their protolith ...
Toshiaki Tsunogae, Md. Sazzadur Rahman, Gao Pin, M. Santosh, Wataru Fujisaki, Sam Uthup, Prince Mandingaisa   +6 more
wiley   +1 more source

Zircon U-Pb Age, Sr-Nd-Hf Isotopic Characteristics of Baiyinhushuo Adakite in Inner Mongolia: Implications for Tectonic Evolution

Applied Sciences
The petrogenesis and geodynamic implications of the Early Paleozoic adakitic rocks in the east of Inner Mongolia remain topics of debate. This study presents new petrology data through zircon U-Pb age and Lu-Hf isotopic composition, whole-rock major ...
Yuxu Fan, Qinghui Xiao, Yang Cheng, Yan Li   +3 more
doaj   +1 more source