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Abstract <p>This work presents the results of studies of the Mesozoic lamprophyre dikes in the basins of the Shavaz, Beshtor, and Kichik rivers of the Chatkal–Kuramin region. New types of dikes were characterized in terms of their geology; the sequence of their formation was identified and described and the patterns of their spatial distribution were determined. The material composition of the dike rocks was analyzed, including the distribution of rock-forming petrogenic elements of minerals for the most representative varieties, the composition of basic and accessory mineral phases on the basis of microprobe analysis, and the distribution of admixture elements in rocks based on ICP–MS data. Conceptions about the geodynamic origin of lamprophyre magmatism, the conditions for the generation of the parental magmas of dikes, and the issues of metallogenic specialization have been considered.</p>

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Alkaline Lamprophyres of the Chatkal–Kuramin Region (Middle Tien Shan)

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • Kh. D. Ishbaev,
  • N. R. Dalimov,
  • A. A. Kurbanov,
  • K. M. Ileshov,
  • A. Kh. Shukurov,
  • V. I. Starostin,
  • A. A. Samsonov

摘要

Abstract

This work presents the results of studies of the Mesozoic lamprophyre dikes in the basins of the Shavaz, Beshtor, and Kichik rivers of the Chatkal–Kuramin region. New types of dikes were characterized in terms of their geology; the sequence of their formation was identified and described and the patterns of their spatial distribution were determined. The material composition of the dike rocks was analyzed, including the distribution of rock-forming petrogenic elements of minerals for the most representative varieties, the composition of basic and accessory mineral phases on the basis of microprobe analysis, and the distribution of admixture elements in rocks based on ICP–MS data. Conceptions about the geodynamic origin of lamprophyre magmatism, the conditions for the generation of the parental magmas of dikes, and the issues of metallogenic specialization have been considered.