Effect of F-Rich Fluids on the A-Type Magmatism and Related Metal Mobilization: New Insights from the Fogang-Nankunshan-Yajishan Igneous Rocks in Southeast China

Ding, Xing; Su, Koulin; Yan, Haibo; Liang, Jing; Sun, Weidong

doi:10.1007/s12583-022-1611-7

Cited by 13 publications

(14 citation statements)

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“…Geophysics and fluid inclusion studies have already confirmed the existence of fluids in the deep crust, especially in the subduction zones. These fluids are mainly dominated by H 2 O-CO 2 compounds and may also include varying quantities of halogens, alkalis, and dissolved silicates [4,22,47,[86][87][88][89][90][91].…”

Section: Fluid-assisted Partial Meltingmentioning

confidence: 99%

“…However, the concentrations of large ion lithophile elements (LILEs) in melt, such as Li, Rb, Sr, and Ba, are limited by the F content [111]. This difference may be attributed to the ability of these metals to form stable complexes with F, which helps them dissolve and enter the melt/fluid phase [22,45,98,114]. In contrast, given that F-OH exchange widely exists in hydrous minerals, especially in biotite, where fluorine uptake will probably decrease the release of some rare metal elements into melts, fluorine in biotite causes a smaller separation between crystal layers and further improves mineral stability, which is similar to the effect of pressure [109].…”

Section: Effect Of Dissolved Components In Fluidsmentioning

confidence: 99%

“…It was previously thought that granitic magma was the product of mantle-derived magma which experienced extensive fractional crystallization and chemical differentiation. Subsequently, the concept that granitoids mainly originate from the partial melting of crustal metamorphic basement rocks was proposed [14][15][16][17][18][19][20][21][22][23]. The earliest evidence of this idea can mainly be attributed to the Qz-Ab-Or ternary melting experiment conducted by Tuttle and Bowen in 1958.…”

Section: Introductionmentioning

confidence: 99%

“…However, Aranovich et al (2014) discovered that most granitic melts equilibrated with proportions of quartz and feldspar contained at least ~3-4 wt.% H 2 O [44]. However, the granitic melts produced by the dehydration melting of hydrous minerals in crustal rocks alone are not sufficient to supply water for the formation of large granitoid batholiths [22]. With the development of geophysics and research into fluid inclusion, it was found that extensive fluid activities still take place even in the deep continental crust with low permeability, especially in the subduction zones [37,[45][46][47][48][49][50][51][52].…”

Section: Introductionmentioning

confidence: 99%

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The Role of Fluids in Melting the Continental Crust and Generating Granitoids: An Overview

Ding

Liu

2022

Geosciences

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Granite is a distinctive constituent part of the continental crust on Earth, the formation and evolution of which have long been hot research topics. In this paper, we reviewed the partial melting processes of crustal rocks without or with fluid assistance and summarized the role of fluids and volatiles involved in the formation of granitic melts. As a conventional model, granitoids were thought to be derived from the dehydration melting of hydrous minerals in crustal basement metamorphic rocks in the absence of external fluids. However, the external-fluid-assisted melting of crustal metamorphic rocks has recently been proposed to produce granitoids as extensive fluids could be active in the deep continental crust, especially in the subduction zones. It has been demonstrated experimentally that H2O plays a crucial role in the partial melting of crustal rocks, in which H2O can (1) significantly lower the solidus temperature of the melted rocks to facilitate partial melting; (2) affect the melting reaction process, mineral stability, and the composition of melt; and (3) help the melt to separate more easily from the source area and aggregate to form a large-scale magma chamber. More importantly, dissolved volatiles and salts in the crustal fluids could also lower the solidus temperature of rocks, affect the partitioning behaviors of trace elements between minerals and melts, and facilitate the formation of some distinctive granitoids (e.g., B-rich, F-rich, and high-K granitoids). Furthermore, various volatiles dissolved in fluids could result in elemental or isotopic fractionation as well as the diversity of mineralization during fluid-assisted melting. In-depth studies regarding the fluid-assisted partial melting of crustal rocks will facilitate a more comprehensive understanding of melting of the Earth’s crust, thus providing strong theoretical constraints on the genesis and mineralization of granitoids as well as the formation and evolution of the continental crust.

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Section: Fluid-assisted Partial Meltingmentioning

confidence: 99%

Section: Effect Of Dissolved Components In Fluidsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Role of Fluids in Melting the Continental Crust and Generating Granitoids: An Overview

Ding

Liu

2022

Geosciences

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“…Aiming at better understanding on the Yanshanian Movement, we collected 10 papers, reporting recent progresses on the drifting history of the Pacific Plate (Sun et al, 2022), the dynamic mechanism of Yanshanian Movement (Deng et al, 2022;Tian et al, 2022), the relationship between the subduction of the Pacific-Izanagi plates and the destruction of NCC as well as magmatism (Xie et al, 2022;Yuan et al, 2022), and the Yanshanian large-scale magmatic activities and mineralization events (Bai et al, 2022;Cao et al, 2022;Ding et al, 2022;Lu et al, 2022;Xue et al, 2022).…”

mentioning

confidence: 99%