نتایج جستجو برای: leucogranite

تعداد نتایج: 83  

Journal: :International Journal of Earth Sciences 2022

Abstract The Arbus igneous complex (SW Sardinia, Italy) represents a good example of short time lived post-collisional composite pluton emplaced at shallow crustal level in the external zone Variscan chain. almost consists granodiorite and leucogranite rock- suites 304 ± 1 Ma within main NW trending thrust separating metamorphic wedge from fold belt foreland. into dilatational step over connect...

Journal: :Geochimica et Cosmochimica Acta 2022

Syn-tectonic quartz veins are widely present in low- to medium-grade metapelitic belts, however, dating these is challenging due the lack of suitable target minerals for most geochronological methods. Andalusite a common K-poor aluminosilicate mineral veins. In this study, we demonstrate feasibility fluid inclusions andalusite using 40Ar/39Ar gentle stepwise crushing technique. Three samples sy...

Journal: :Bulletin De La Societe Geologique De France 2021

The Puy-les-Vignes W deposit, located in the northwestern French Massif Central (FMC), is a rare occurrence of wolframite-mineralized hydrothermal breccia pipe hosted high-grade metamorphic gneisses. We present an integrated study this deposit aiming to characterize ore-forming system link with Variscan late-orogenic evolution FMC. Based on set representative samples from host rocks and mineral...

Journal: :Minerals 2022

Understanding of the mechanism between magma sources and metallogeny is still vague. As an important gold molybdenum producing area, Chifeng–Chaoyang district, located at northern margin North China Craton (NCC), a key place for this issue. New geochemical data relating to Taijiying gold-deposit-related granites are presented. These data, coupled with previous studies, used explore relationship...

Journal: :Frontiers in Earth Science 2021

The Zhangbaoshan (ZBS) super-large Rubidium deposit, located in the Eastern Tianshan, is a typical granite-type Rb deposit. ZBS deposit mainly hosted highly evolved Baishitouquan (BST) pluton enriched F and Rb, which exhibits five lithological zones from bottom to top: leucogranite (zone-a), amazonite-bearing granite (zone-b), amazonite (zone-c), topaz-bearing (zone-d) topaz albite (zone-e), as...

2018
Wei Lin Michel Faure Patrick Monié Urs Schärer Liangsheng Zhang Yan Sun

In south China the Lushan massif forms a Jurassic through Early Triassic [e.g., Mattauer et al., 1985, topographic high of the South China Block south of the 1991; Okay et al., 1993; Hacker et al., 1996; Gilder et al., Qinling-Dabie belt. The Lushan massif consists of two main 1999]. The noah directed continental subduction of south lithotectonic units separated by a major tectonic ontact: a Ch...

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