Results 61 to 70 of about 806 (206)

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

Petrography, Petrology, and Geochemistry of Subvolcanic Bodies in Dogan Porphyry Copper-Molybdenum Deposit (Toroud-Chah Shirin Belt) [PDF]

پترولوژی
IntroductionDogan mining area is located on the northern edge of Iran's central desert plain and northwest of Toroud village. Structurally, the area is a part of Central Alborz, Eastern Alborz, and Central Iran zones, which gave rise to the formation of ...
Shadi Sattari, Mohammadreza Hosseinzadeh, Mohsen Moayyed   +2 more
doaj   +1 more source

Paleogene adakitic rhyolite to high-Mg andesites and Early Cretaceous adakitic zoned plutons in the Kitakami Mountains, Japan

The Journal of the Geological Society of Japan, 2008
花崗岩質大陸地殻の形成機構を明らかにすることは，地球の進化過程の解明に通じる重要な研究課題である．本案内書では，北上山地の前期白亜紀アダカイト質累帯深成岩体と古第三紀浄土ヶ浜流紋岩類の主要な岩体について，岩石学的特徴とその成因について述べた．これらのアダカイト類の岩石化学的多様性の成因には，スラブメルトとマントルおよび下部地殻との反応の程度の差が主要な役割を果たしていたと考えられ，スラブメルトの発生から上昇・定置に至る現象の解明に重要な位置を占めると考えられる．
Nobutaka Tsuchiya, Yoshiharu Nishioka, Shuhei Koiwa, Naoko Otsuki   +3 more
openaire   +2 more sources

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

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

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

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, Pease, Victoria, Luo, Hongling, He, Yuankai, Zheng, Rongguo, Zhang, Wen, Feng, Jicheng, Pease, Victoria,   +9 more
core   +1 more source

Genesis of adakite-like lavas of Licancabur volcano (Chile-Bolivia, Central Andes) [PDF]

, 2009
The Licancabur volcano is located on the Bolivia-Chile Altiplano (Central Andes). The lavas are andesites and dacites. Numerous mineralogic features attest that magma mixing occurred.
Bernard Déruelle, Figueroa, Oscar, Demaiffe, Daniel, Déruelle, Bernard, Oscar Figueroa, Daniel Demaiffe   +5 more
core   +1 more source

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

Adakite-like signature of Late Miocene intrusions at the Los Pelambres giant porphyry copper deposit in the Andes of central Chile: metallogenic implications [PDF]

, 2003
Adakite-like features are recognized in the Late Miocene (~10 Ma) porphyritic intrusions of the Los Pelambres giant porphyry copper deposit, central Chile (32°S). Located within the southern portion of the flat-slab segment (28–33°S) of the Chilean Andes,
Dietrich, Andreas, Palacios, Carlos, Parada, Miguel A., Parada Reyes, Miguel, Reich, Martin, Schultz, Frank, Palacios Monasterio, Carlos, Reich Morales, Martín, Lehmann, Bernd   +8 more
core   +1 more source