液体不溶性在阿尔丹地盾卡图金地块稀有金属花岗岩形成过程中的作用

IF 1 4区 地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS
E. V. Tolmacheva, S. D. Velikoslavinskii, A. B. Kotov, A. M. Larin, E. V. Sklyarov, D. P. Gladkochub, T. V. Donskaya, T. M. Skovitina, V. P. Kovach, O. L. Galankina
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引用次数: 0

摘要

论文讨论了卡图金山地块母熔体溶入的氟化盐("冰晶石")和硅酸盐液体之间可能存在的不溶性,以及这一现象对岩石学的影响。本文介绍了对冰晶石和锆石的详细研究结果。结果表明,液体的不溶性引发了锆石的大量结晶,并与冰晶石熔体的后续演化过程一起,促成了大型冰晶石体的形成。有关矿物包裹体的数据被用来估算氟化盐和硅酸盐熔体的结晶温度,并勾勒出它们在地块形成过程中的演化路径。研究表明,卡图金山和西卡图金山丘的花岗岩很可能来自不同的矿源,它们主要在氟含量上存在差异。本文介绍了在卡图金山地块花岗岩中发现的三代锆石的化学成分数据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Role of Liquid Immiscibility in the Formation of the Rare Metal Granites of the Katugin Massif, Aldan Shield

Role of Liquid Immiscibility in the Formation of the Rare Metal Granites of the Katugin Massif, Aldan Shield

Role of Liquid Immiscibility in the Formation of the Rare Metal Granites of the Katugin Massif, Aldan Shield

The paper discusses possible immiscibility between fluoride salt (“cryolite”) and silicate liquids into which the parental melt of the Katugin massif exsolves, and the petrological implications of this phenomenon. Results of a detailed study of the cryolite and zircon are presented. Liquid immiscibility is demonstrated to have triggered the massive crystallization of zircon and, together with the processes of subsequent evolution of the cryolite melt, contributed to the formation of the large cryolite bodies. Data on mineral-hosted inclusions were used to estimate the crystallization temperatures of fluoride salt and silicate melts and outline the pathways of their evolution during the formation of the massif. It is shown that the granites of the Katugin and West Katugin massifs were most likely derived from distinct sources, that differed mainly in fluorine content. Data on the chemical composition of three zircon generations identified in the granites of the Katugin massif are presented.

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来源期刊
Petrology
Petrology 地学-地球科学综合
CiteScore
2.40
自引率
20.00%
发文量
27
审稿时长
>12 weeks
期刊介绍: Petrology is a journal of magmatic, metamorphic, and experimental petrology, mineralogy, and geochemistry. The journal offers comprehensive information on all multidisciplinary aspects of theoretical, experimental, and applied petrology. By giving special consideration to studies on the petrography of different regions of the former Soviet Union, Petrology provides readers with a unique opportunity to refine their understanding of the geology of the vast territory of the Eurasian continent. The journal welcomes manuscripts from all countries in the English or Russian language.
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