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Li dating

Stockworks and disseminated W–Mo mineralization occur in the roof pendant of a 0.3 km monzogranitic porphyry stock that intruded into a granodiorite stock, hosted by Neoproterozoic phyllite and slate.

Geochemical data show that both granodiorite and monzogranitic porphyry are characterized by enrichment of large ion lithophile elements (LILE) relative to high field strength elements (HFSE), indicating a peraluminous nature (A/CNK = 1.01–1.08).

Two granitoids are characterized by a negative slope with significant light REE/heavy REE fractionation [(La/Yb)) of ~ 1.2–1.3 Ga are consistent, indicating that Neoproterozoic crustal rocks of the Shuangqiaoshan Group could have contributed to form the Yangchuling magmas.

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We have a long history of Asian Dating service started in 2000.

In this case, the partial melting of rocks of the Shuangqiaoshan Group can produce S-, I- and transitional type granitoids.

Six molybdenite samples yielded a Re–Os weighted mean age of 146.4 ± 1.0 Ma.Considering the two groups of parallel Late Mesozoic ore belts, namely the Jiangnan porphyry–skarn tungsten belt (JNB) in the south and the Middle–Lower Yangtze River porphyry–skarn Cu–Au–Mo–Fe ore belt (YRB) in the north, the Nanling granite-related W–Sn ore belt (NLB) in the south, the neighboring Qin–Hang porphyry–skarn Cu–Mo–hydrothermal Pb–Zn–Ag ore belt (QHB) in the north, as well as the Southeastern Coast porphyry–skarn Cu–Mo–Au ore belt (SCB) recognized in South China in this paper, we propose that the latest Jurassic to earliest Cretaceous granitoids and associated ores were formed during a tearing of the subducting Izanagi slab.This tearing of the subduction slab caused the upwelling of asthenosphere and the resulting mantle–crust interaction.Die enorme keuze maakt het kiezen van de beste datingsite echter niet eenvoudig.Daarom hebben we op onze website alle veilige, leuke en populaire datingsites voor je op een rijtje gezet.The Yangchuling W–Mo deposit, located in the Jiangnan porphyry–skarn (JNB) tungsten ore belt, is the first recognized typical porphyry W–Mo deposit in China in the 1980's.