Hydrogeochemical characteristics and geothermometry of hot springs in the Altai region, Mongolia

IF 1 4区地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS

Geochemistry-Exploration Environment Analysis Pub Date : 2021-07-14 DOI:10.1144/geochem2021-016

Bolormaa Chimeddorj, D. Munkhbat, B. Altanbaatar, Oyuntsetseg Dolgorjav, B. Oyuntsetseg

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引用次数: 5

Abstract

This study determines the properties of hot spring waters and associated rocks, calculates reservoir temperatures and depths in the Mongolian Altai region, and constructs a conceptual model for geothermal water based on these results. The hot springs consist of HCO3–Na, SO4–Na, and HCO3–SO4–Na mixed waters. They exhibit alkaline pH levels and temperatures in the range 21.3–35°C. X-ray diffraction analyses of outcrop rocks reveal silicate and carbonate-type minerals such as quartz, albite, orthoclase, dolomite, mica and actinolite, while correlation analysis indicates that the chemical composition of the hot spring water is directly related to rock mineral composition, where dissolution of albite, orthoclase and dolomite minerals has played an important role. Reservoir water circulation depths are 2615–3410 m according to quartz and chalcedony geothermometry. The results indicate that the spring water in the Mongolian Altai region comprises a low mineral content with alkaline pH levels and that the reservoir temperature can reach up to 106°C. We also propose a conceptual model for geothermal water in the Chikhertei hot spring. The geothermal water in the Mongolian Altai region has the potential for use in heating systems. Thematic collection: This article is part of the Hydrochemistry related to exploration and environmental issues collection available at: https://www.lyellcollection.org/cc/hydrochemistry-related-to-exploration-and-environmental-issues

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内蒙古阿尔泰地区温泉水文地球化学特征及地热测量

本研究确定了蒙古阿尔泰地区温泉水及伴生岩的性质，计算了储层温度和深度，并在此基础上构建了地热水概念模型。温泉由HCO3-Na、SO4-Na和HCO3-SO4-Na混合水组成。它们的pH值呈碱性，温度在21.3-35°C之间。露头岩石的x射线衍射分析显示石英、钠长石、正长石、白云石、云母、放线石等硅酸盐和碳酸盐型矿物，相关性分析表明温泉水的化学成分与岩石矿物组成有直接关系，其中钠长石、正长石和白云石矿物的溶蚀作用起重要作用。石英和玉髓地热测量结果表明，储层水循环深度为2615 ~ 3410 m。结果表明，蒙古阿尔泰地区泉水矿物含量低，pH值偏碱性，储层温度可达106℃。本文还提出了奇赫提温泉地热水的概念模型。蒙古阿尔泰地区的地热水具有用于供热系统的潜力。专题合集:本文是与勘探和环境问题相关的水化学合集的一部分，可在:https://www.lyellcollection.org/cc/hydrochemistry-related-to-exploration-and-environmental-issues上找到

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来源期刊

Geochemistry-Exploration Environment Analysis 地学-地球化学与地球物理

CiteScore

3.60

自引率

16.70%

发文量

审稿时长

1 months

期刊介绍： Geochemistry: Exploration, Environment, Analysis (GEEA) is a co-owned journal of the Geological Society of London and the Association of Applied Geochemists (AAG). GEEA focuses on mineral exploration using geochemistry; related fields also covered include geoanalysis, the development of methods and techniques used to analyse geochemical materials such as rocks, soils, sediments, waters and vegetation, and environmental issues associated with mining and source apportionment. GEEA is well-known for its thematic sets on hot topics and regularly publishes papers from the biennial International Applied Geochemistry Symposium (IAGS). Papers that seek to integrate geological, geochemical and geophysical methods of exploration are particularly welcome, as are those that concern geochemical mapping and those that comprise case histories. Given the many links between exploration and environmental geochemistry, the journal encourages the exchange of concepts and data; in particular, to differentiate various sources of elements. GEEA publishes research articles; discussion papers; book reviews; editorial content and thematic sets.