Illitization of smectite influenced by chemical weathering and its potential control of anatase formation in altered volcanic ashes

IF 2.7 3区地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS

American Mineralogist Pub Date : 2024-02-01 DOI:10.2138/am-2023-9125

Chen Liu, Qian Fang, Hanlie Hong, Qian Song, Kaipeng Ji, Nina Gong, Xibing Shen, T. Algeo

引用次数: 0

Abstract

23 Illitization of smectite in sedimentary systems, a process akin to ‘reverse 24 weathering’, is a diagenetic process that has significant implications for sediment 25 paragenesis and hydrocarbon exploration. However, the potential influence of 26 chemical weathering on the illitization of smectite, and its possible control of the 27 neogenesis of titanium (Ti)-oxides remain unclear. Altered volcanic tephra layers (i.e., 28 K-bentonites) characterized by an interstratified illite-smectite (I-S) clay mineralogy 29 serve as an excellent medium to investigate the illitization of smectite. In this study, 30 we first investigated the fine structure of clay minerals and in-situ nano-mineralogy of

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受化学风化作用影响的闪长岩沸腾及其对蚀变火山灰中锐钛矿形成的潜在控制作用

23 沉积系统中的蚀变过程类似于 "逆风化"，是一种成岩过程，对沉积物 25 成因和碳氢化合物勘探具有重要影响。然而，化学风化对 26 辉绿岩幻化的潜在影响及其对 27 钛（Ti）-氧化物新生成的可能控制仍不清楚。以层间伊利石-镜铁矿（I-S）粘土矿物学为特征的变质火山凝灰岩层（即 28 K-膨润土）29 是研究镜铁矿析出的极佳介质。在本研究中，我们首先研究了 30 K-膨润土的粘土矿物细微结构和原位纳米矿物学。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

American Mineralogist 地学-地球化学与地球物理

CiteScore

5.20

自引率

9.70%

发文量

276

审稿时长

1 months

期刊介绍： American Mineralogist: Journal of Earth and Planetary Materials (Am Min), is the flagship journal of the Mineralogical Society of America (MSA), continuously published since 1916. Am Min is home to some of the most important advances in the Earth Sciences. Our mission is a continuance of this heritage: to provide readers with reports on original scientific research, both fundamental and applied, with far reaching implications and far ranging appeal. Topics of interest cover all aspects of planetary evolution, and biological and atmospheric processes mediated by solid-state phenomena. These include, but are not limited to, mineralogy and crystallography, high- and low-temperature geochemistry, petrology, geofluids, bio-geochemistry, bio-mineralogy, synthetic materials of relevance to the Earth and planetary sciences, and breakthroughs in analytical methods of any of the aforementioned.