关于西班牙西南部 Sierra Bermeja 山脉岩浆岩微晶粒飞地（MMEs）与含堇青石的独居岩的联系

Q4 Earth and Planetary Sciences

Geogaceta Pub Date : 2023-12-18 DOI:10.55407/geogaceta102352

J. Errandonea-Martin, F. Sarrionandia, M. Carracedo-Sánchez, I. Garate-Olave, J. I. Gil Ibarguchi

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引用次数: 0

摘要

对 Sierra Bermeja 长岩（伊比利亚山丘南部）含堇青石的单斜长岩体中发现的岩浆微晶粒飞地（MMEs）进行了研究，以了解其潜在的成岩关系。矿物学方面的差异，如 MMEs 中不存在堇青石（Crd）和钾长石（Kfs），以及生物橄榄石（Bt）和斜长石（Pl）成分的差异，再加上全岩地球化学中缺乏某些元素的相关性，表明 MMEs 的成因与主岩单斜长岩相比较截然不同。MMEs可能是注入主岩单斜岩浆并与之混合的更钙质岩浆的小球，而后者的地球化学特征没有发生重大变化。

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On the association of Magmatic Microgranular Enclaves (MMEs) and cordierite-bearing monzogranites at the Sierra Bermeja Pluton (SW Spain)

Magmatic Microgranular Enclaves (MMEs) found within the cordierite-bearing monzogranites of the Sierra Bermeja Pluton (southern Iberian Massif) were investigated to understand their potential petrogenetic relationship. Variations in mineralogy, such as the absence of cordierite (Crd) and potassium feldspar (Kfs) in the MMEs, as well as differences in the compositions of biotite (Bt) and plagioclase (Pl), along with the lack of correlations of certain elements in whole-rock geochemistry, suggest a distinct origin for the MMEs compared to the host monzogranites. The MMEs may represent minor globules of a more mafic magma injected into and mixed with the host monzogranitic magma, with no significant alterations in the geochemical characteristics of the latter.

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来源期刊

Geogaceta Earth and Planetary Sciences-Geology

CiteScore

0.40

自引率

0.00%

发文量

期刊介绍： Geogaceta is a magazine that publishes semiannually the Geological Society of Spain. This society aims to promote, promote, and disseminate knowledge, progress and applications of Geology; , the advice in scientific and educational matters to the institutions and entities that require it and the representation of the scientific interests of the geological community of Spain at international level. Its members have the right to participate in all the activities organized by the Company, to present their candidacy to any of their management positions and to receive free periodical publications of the Company (Geogaceta and Magazine of the Geological Society of Spain).