Results 61 to 70 of about 944 (183)

Geochemical and Isotopic Constraints on Long‐Lived Source Enrichment and Mantle Evolution in Paleoproterozoic Cratonic Lamprophyres

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract The cratonic lithospheric mantle records complex metasomatic processes and is frequently tapped by alkaline magmatism, offering a unique opportunity to trace the progressive evolution of the mantle. In the present contribution, we investigate a newly identified calc‐alkaline lamprophyre field from the Neoarchean Jonnagiri Schist Belt, Eastern ...
Sourav Naskar, Rohit Pandey, Nils Björn Baumann, N. V. Chalapathi Rao, George Mathew, J. Amal Dev, J. K. Tomson   +6 more
wiley   +1 more source

Origin of Early Triassic Hornblende Gabbro from the Yunkai Massif, South China: Constraints from Mineral and Bulk-Rock Geochemistry

Geosciences
The early Triassic (~250 Ma) hornblende gabbro from the Tengxian area of Yunkai Massif, South China, contains a mineral assemblage of clinopyroxene, hornblende, biotite, plagioclase, K-feldspar and quartz and accessory apatite, and zircon and ilmenite ...
Yaqian Wen, Feng Guo, Liang Zhao
doaj   +1 more source

New data on composition of intrusive rocks from Shikotan island (Lesser Kuril Chain)

Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2019
The article presents new petrologic and geochemical data on gabbroids from Shikotan Island (Lesser Kuril Chain). The results were compared with co-magmatic Late Cretaceous-Paleocene volcanics from the Zelenov Formation, as well as with the rocks from the
Колосков А.В., Федоров П.И., Окина О.И.   +2 more
doaj   +1 more source

Petrogenesis

, 1907
n ...
openaire   +1 more source

Mineralogy, geochemistry and conditions of formation Permian-Triassic intraplate granitoids of Sinyushenskiy Massif (Gorny Altai)

Литосфера, 2016
The data on geological settings, ages, special features of mineralogy and composition of Sinyushensky Massif granitoids the in north-west part of the Gorny Altay region.
N. N. Kruk, O. A. Gavrushkina, C. G. Shokalskiy, A. V. Travin   +3 more
doaj   +2 more sources

Geology, alteration, age dating and petrogenesis of intrusive bodies in Halak Abad prospect area, NE Iran

Journal of Economic Geology, 2014
The Halak Abad prospect occurs in the northeastern part of Central Iran zone (Sabzevar structural zone). In this investigation, geochemical evolution, age and source of part of northeastern Iran magmatic arc (intrusive bodies) in Halak Abad area in the ...
Maliheh Ghourchi, Mohammad Hassan Karimpour, J. Lang Farmer, Charles Stern   +3 more
doaj  

The Geochemical Characteristics, Genesis, and Geological Significance of Early Paleozoic Granites in the South Altun Orogenic Belt of Western China

Applied Sciences
The Altun Orogenic Belt (AOB) has undergone multiple complex subduction–collision events. However, there are numerous disagreements regarding the Early Paleozoic tectonic–magmatic evolution of the AOB, primarily due to differing interpretations of ...
Xu Zeng, Suotang Fu, Guiwen Wang, Bo Wang, Zhixiong Wu, Haidong Cui, Zongqi Feng   +6 more
doaj   +1 more source

Rapid transition from primary to secondary crust building on the Moon explained by mantle overturn. [PDF]

Nat Commun, 2023
Prissel TC, Zhang N, Jackson CRM, Li H.
europepmc   +1 more source

Petrogenesis and tectonic setting of the proto-tethyan dachaidan ophiolite, North China: insights from clinopyroxene chemistry and whole-rock Sr–Nd–Pb and zircon Hf isotopes

Frontiers in Earth Science
IntroductionThe Dachaidan ophiolites outcrop within an ultrahigh-pressure metamorphic belt along the northern margin of the Qaidam Basin. However, their age, source, and tectonic setting remain still in debate.MethodIn this study, we investigated the ...
Yilin Qu, Yilin Qu, Xijun Liu, Xijun Liu, Xijun Liu, Xijun Liu, Xiao Liu, Xiao Liu, Xiao Liu, Qianwen Huang, Qianwen Huang, Qijun Yang, Rongguo Hu, Rongguo Hu, Rongguo Hu, Pengde Liu, Yujia Song   +16 more
doaj   +1 more source

Editorial: Critical Metals in Northwest China: Characters, Genesis and Tectonic Settings

Frontiers in Earth Science, 2022
Chang-Zhi Wu, Xiaohua Deng, Xiaohua Deng, Leon Bagas, Matthew J. Brzozowski, Yan-Jing Chen   +5 more
doaj   +1 more source