Results 151 to 160 of about 917 (192)

Petrogenesis and metallogenesis of the Yanshanian adakite-like rocks in the Eastern Yangtze Block

open access: yesScience in China Series D Earth Sciences, 2003
Many of the Yanshannian intermediate-acid intrusive rocks related to Cu-Au mineralization in the Eastern Yangtze Block are characterized by high Al 2 O 3 , Sr contents, while low in Y, Yb contents, thus with high Sr/Y, and La/Yb ratios, and variational isotope signatures in particular, e.g.
Wang Qiang   +6 more
core   +4 more sources

Revisiting of the Yanshanian basins in western and northern Beijing, North China

Journal of Asian Earth Sciences, 2018
Abstract We present new laser ablation–inductively coupled plasma–mass spectrometry (LA–ICP–MS) zircon U–Pb ages and provenance data for the Yanshanian basins in western and northern Beijing, North China, with the aims of demonstrating the relationship between basin evolution and “Yanshanian tectonism” and constraining the Late Jurassic–Early ...
Junlai Liu, Shuan-Hong Zhang
exaly   +2 more sources

Discussion on the relationship between the Yanshanian Movement and cratonic destruction in North China

Science China Earth Sciences, 2018
The relationship between the Yanshanian Movement, destruction of the North China Craton (NCC), and subduction of the western Pacific plate is crucial to reconstructing the middle-late Mesozoic tectonic evolution of the eastern Asian continent and margin. The Yanshanian Movement was a globally important change in crustal tectonics during the Middle-Late
Yu Wang, Liyun Zhou
exaly   +2 more sources

Sulfur Isotopic Variation of Yanshanian Magmatic-hydrothermal Deposits in Southern China

Resource Geology, 2000
Abstract: Sulfur isotope data (δ34S) of sulfides of more than 6700 samples from 157 ore deposits associated with Early and Late Yanshanian granitic and volcanic activities in South China are reviewed and summarized. Averaged δ34S values of individual deposits vary from ‐9. 3 to +20.
Shunsō Ishihara
exaly   +2 more sources

Jurassic–Cretaceous tectonic evolution of Southeast China: geochronological and geochemical constraints of Yanshanian granitoids

International Geology Review, 2013
We report results of laser ablation inductively coupled plasma-mass spectrometry-based dating, as well as the analysis of bulk-rock major and trace elements, and Sr–Nd isotopes to address the genesis and tectonic settings of the Yanshanian granitoids in neighbouring sections of Zhejiang, Jiangxi, and Anhui provinces (the WZG region) within the Yangtze ...
Xinqi Yu, Junting Qiu
exaly   +2 more sources

A possible model for the lithospheric thinning of North China Craton: Evidence from the Yanshanian (Jura-Cretaceous) magmatism and tectonism

Lithos, 2007
It is well known that the North China Craton was largely formed in the Archean, and was reactivated and transformed during the Jura-Cretaceous (Yanshanian) time into an orogenic belt, which is believed to be related to the lithospheric thinning. Recent debate is centered on the mechanisms and processes of the lithospheric thinning.
Yaoling Niu, Guochun Zhao
exaly   +2 more sources

Petrology and geochronology of Xuejiashiliang igneous complex and their genetic link to the lithospheric thinning during the Yanshanian orogenesis in eastern China

Lithos, 2007
The Xuejiashiliang igneous complex, ∼150 km north of the City of Beijing, is an important member of the Mesozoic Yanshanian orogen in eastern China. This complex consists of gabbro, monzogabbro, monzonite, syenite and granite. In situ zircon U/Pb dating shows that the Xuejiashiliang complex was emplaced at ∼128.8–123.7 Ma (i.e., K1 1 ).
Yaoling Niu, Guochun Zhao
exaly   +2 more sources

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