Results 41 to 50 of about 672 (207)

Petrology and Geochemistry of the Aroud Granitoid Pluton, North of Alam Kuh, Central Western Alborz [PDF]

پترولوژی
IntroductionThe central Alborz, a tectono-stratigraphic terrane within the Alborz Mountains, underwent significant tectonic evolution linked to the Late Triassic Cimmerian orogeny and the subsequent collision between the Iranian microplate and the ...
Shadi Noori KHeymehsari, Nematollah Rashidnejad Omran, Mohammadreza Ghorbani, Huai-jen yang   +3 more
doaj   +1 more source

Generation of normal and adakite-like calc-alkaline magmas in a non-subductional environment: An Sr-O-H isotopic study of the Apuseni Mountains neogene magmatic province, Romania

, 2007
Neogene magmatism in the Apuseni Mountains of Romania was active between 15 and 7 Ma, with an isolated final eruption at 1.6 Ma. Several groups of magmatic rocks can be distinguished in the province on the basis of ages, trace elements and isotopic ...
Hilary Downes, Ana-Voica Bojar, Sonia Tonarini, Bojar, A.V., Mason, P.R.D., Ioan Seghedi, Paul Mason, Seghedi, I., Downes, Hilary, Rosu, E., Tonarini, S., Emilian Roşu   +11 more
core   +1 more source

Adakitic post-Miocene magmatism of Qaraie sub-volcanic dome, Mahneshan area (west of Zanjan)

Journal of Economic Geology
Qaraie sub-volcanic dome in the west of Zanjan is part of the Urumieh-Dokhtar magmatic arc in the Central Iran zone. Qaraie dome with columnar joints was intruded into the Upper Red Formation sequence and Kahrizbeik granitoid intrusion with Upper ...
Sajad Moseni Badalabadi, Mir Ali Asghar Mokhtari, Hossein Kouhestani   +2 more
doaj   +1 more source

Comparative study of big data of global adakites and mineralization-related granite in the Geza arc metallogenic belt, northwest Yunnan, Southwest China

Big Earth Data, 2018
The Geza arc is an important part of the Sanjiang tectono-magmatic belt and is a newly discovered copper polymetallic ore concentration area in northwest Yunnan province, Southwest China.
Liu Xuelong, Li Wenchang, Zhang Qi, Zhang Na, Zhang Changzhen, Luo Ying, Wang Shuaishuai, Yang Fucheng, Chen Jianhang, Li Zhenhuan   +9 more
doaj   +1 more source

Isotope-geochemical heterogeneity of pliocene-quaternary volcanics from kamchatka and the asthenospheric diapirism problem

Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2020
Isotope-geochemical material for Pliocene-Quaternary volcanoes of the Kamchatka region is generalized on a cartographic basis. The Sr-isotope anomalies of moderate and elevated radiogenicity, geochemically confirmed, are spatially conjugated.
Колосков А.В.
doaj   +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

Concurrent adakitic and non-adakitic Late Miocene-Quaternary magmatism at the Sahand volcano, Urumieh-Dokhtar Magmatic Arc (NW Iran)

Lithos, 2023
The Sahand volcano in NW Iran is characterised by voluminous Late Miocene to Quaternary magmatic activity. Petrographic, mineral chemical, whole-rock geochemical and Sr-Nd-Pb isotope data allowed to identify two rock groups, continuously emplaced from the ancient Paleo-Sahand to the later Neo-Sahand stages.
Fedele L., Mehdipour Ghazi J., Agostini S., Ronca S., Innocenzi F., Lustrino M.   +5 more
openaire   +4 more sources

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

Late Cretaceous adakitic intrusive rocks in the Laimailang area, Gangdese batholith: Implications for the Neo-Tethyan Ocean subduction

Open Geosciences, 2022
The Gangdese batholith, emplaced from the Cretaceous to the Eocene in the southern Lhasa terrane of Tibet, provides critical constraints on the tectonic-magmatic evolution of the Neo-Tethyan Ocean and the India-Asia continental collision. In this article,
Li Deliang, Mai Yuanjun, Yang Wenguang, Zhu Lidong   +3 more
doaj   +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