The Express Characteristic of the Mineral Composition of Core Samples in Research on Modern Geothermal Systems

IF 0.9 4区地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS

Journal of Volcanology and Seismology Pub Date : 2026-02-16 DOI:10.1134/S0742046325700381

A. V. Sergeeva, S. N. Rychagov, O. V. Kravchenko, Ya. V. Sergeev, M. A. Nazarova, A. A. Kuzmina, E. V. Kartasheva

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Abstract

The possibilities of using infrared spectroscopy for express characterization of the mineral composition of hydrothermally altered rocks are considered using the example of argillisites of the Yuzhno-Kambalny Central Thermal Field (Pauzhetsky district of South Kamchatka). The minerals that are indicators of sulfuric acid and carbon dioxide leaching zones of rocks have been identified, and the conditions for the transition of some mineral associations to others have been restored with changes in the temperature and geochemical regimes of the geological environment. Zones of ascending alkaline fluid are marked by carbonates and the change of feldspar into gel-like zeolite-like aggregates, with which ore minerals are often associated. To diagnose the latter, an additional method is used, that is, X-ray diffractometry. When taking a large number of core samples from geothermal deposits, this methodological approach is very relevant as it is quite reliable, rapid and economically feasible.

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现代地热系统研究中岩心样品矿物组成的表达特征

本文以南堪察加的保热茨基区（Yuzhno-Kambalny Central Thermal Field）的泥岩为例，探讨了利用红外光谱表征热液蚀变岩矿物组成的可能性。作为岩石的硫酸和二氧化碳浸出带的指示物的矿物已经确定，并且随着地质环境的温度和地球化学制度的变化，一些矿物组合向另一些矿物组合过渡的条件已经恢复。上升的碱性流体带以碳酸盐和长石转变为凝胶状沸石状聚集体为标志，矿石矿物常与之相关。为了诊断后者，使用了另一种方法，即x射线衍射法。该方法可靠、快速、经济可行，适用于地热矿床的大量岩心取样。

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来源期刊

Journal of Volcanology and Seismology 地学-地球化学与地球物理

CiteScore

1.50

自引率

28.60%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Volcanology and Seismology publishes theoretical and experimental studies, communications, and reports on volcanic, seismic, geodynamic, and magmatic processes occurring in the areas of island arcs and other active regions of the Earth. In particular, the journal looks at present-day land and submarine volcanic activity; Neogene–Quaternary volcanism; mechanisms of plutonic activity; the geochemistry of volcanic and postvolcanic processes; geothermal systems in volcanic regions; and seismological monitoring. In addition, the journal surveys earthquakes, volcanic eruptions, and techniques for predicting them.