含氟花岗岩熔体与方解石大理石相互作用的实验模型

IF 1 4区 地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS Petrology Pub Date : 2024-04-22 DOI:10.1134/S0869591124020024
Ya. O. Alferyeva, E. N. Gramenitsky, A. S. Novikova
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引用次数: 0

摘要

在 750°C 和 1 千巴的压力下,进行了一次模拟方解石与高度进化的含氟花岗岩熔体接触反应相互作用的实验。系统中的水含量不超过干荷质量的 10%。结果表明岩浆熔体和方解石之间存在相互作用的可能性。实验产物包含一个由液相和结晶矿物组成的分区柱。在无碳酸盐部分,新形成的相为尖晶石、石英、硅灰石、毛石和非晶碳酸盐-氟化物相 LCF。柱状无碳酸盐部分区域的矿物组合因二氧化碳和氟化氢活度的比例而异。在硅酸盐部分,发现了铝硅酸盐玻璃、碱性长石和成分各异的斜长石。硅和氟主要从硅酸盐部分转移到碳酸盐部分,少量的钙则反向转移。
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Experimental Modeling of Interaction between Fluorine-Containing Granite Melt and Calcite Marble

At 750°C and a pressure of 1 kbar, an experiment was carried out simulating the contact-reaction interaction of calcite and a highly evolved fluorine-containing granite melt. The water content in the system did not exceed 10% of the dry charge mass. The possibility of interaction between magmatic melt and calcite is shown. The experimental products contain a zoned column composed of liquid phases and crystalline minerals. In the apocarbonate part, the newly formed phases are cuspidine, quartz, wollastonite, grossular, and a non-crystalline carbonate–fluoride phase LCF. The mineral assemblages in the zones of the apocarbonate part of the column vary depending on the ratio of CO2 and HF activities. In the silicate part, aluminosilicate glass, alkali feldspar, and plagioclase of variable composition were found. Silicon and fluorine are intensively transferred from the silicate to carbonate part, and a small amount of calcium is transferred in the opposite direction.

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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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