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Abstract <p>A Middle to Late Ordovician age of formation has been obtained for the granitoids of the Kurdai–Shatyrkol complex in Southern Kazakhstan (the Kendyktas Ridge) hosting the Shatyrkol and Zhaisan quartz-vein-type copper deposits. The U–Pb (SIMS) geochronological studies of the rocks from different phases of the Kurdai–Shatyrkol complex yielded age estimates of 464 to 457 Ma for quartz diorite and monzonite of the first phase, and 454 to 450 Ma for granodiorite and alkaline granite of the second and third phases. As suggested by the new data, the Kurdai–Shatyrkol complex is comparable to the ore-bearing Middle to Late Ordovician granitoids of Northern Kazakhstan and Northern Tien Shan, which allows referring them to a single large copper–gold type of metallogenic province.</p>

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Middle to Late Ordovician Age of Granitoids Hosting Shatyrkol-Type Quartz-Vein Copper Deposits (Kendyktas Ridge, Southern Kazakhstan)

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • K. E. Degtyarev,
  • A. A. Tretyakov,
  • N. A. Kanygina,
  • K. N. Shatagin

摘要

Abstract

A Middle to Late Ordovician age of formation has been obtained for the granitoids of the Kurdai–Shatyrkol complex in Southern Kazakhstan (the Kendyktas Ridge) hosting the Shatyrkol and Zhaisan quartz-vein-type copper deposits. The U–Pb (SIMS) geochronological studies of the rocks from different phases of the Kurdai–Shatyrkol complex yielded age estimates of 464 to 457 Ma for quartz diorite and monzonite of the first phase, and 454 to 450 Ma for granodiorite and alkaline granite of the second and third phases. As suggested by the new data, the Kurdai–Shatyrkol complex is comparable to the ore-bearing Middle to Late Ordovician granitoids of Northern Kazakhstan and Northern Tien Shan, which allows referring them to a single large copper–gold type of metallogenic province.