Sandy Sediments in the Tokko Basin of the Baikal Rift Zone: Sources and Provenance Areas

IF 0.7 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Doklady Earth Sciences Pub Date : 2024-05-02 DOI:10.1134/s1028334x24601810

T. M. Skovitina, A. B. Kotov, I. N. Buchnev, V. P. Kovach, S. D. Velikoslavinskii, E. V. Tolmacheva, E. V. Adamskaya, O. V. Bobrovskaya, V. A. Gorovoy

引用次数: 0

Abstract

The results of U–Th–Pb (LA–ICP–MS) geochronological studies of detrital zircon from the Quaternary sands of the Tokko Basin on the eastern flank of the Baikal Rift Zone are reported. It is shown that their main sources were Mesoarchean tonalite–trondhjemite orthogneisses and metavolcanics, as well as Meso- and Neoarchean syn- and post-collision granitoids of the Charа–Olekma geoblock of the Aldan Shield, which are located near the Tokko Basin. Moreover, the input of sedimentary material into the basin could have occurred during the melting of glaciers that covered the Udokan Ridge to the south and the Kodar Ridge to the north in the Middle–Upper Quaternary.

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贝加尔裂谷带托克河盆地的砂质沉积物：来源和产地

摘要报告了对贝加尔裂谷带东侧托克河盆地第四纪砂岩中的碎屑锆石进行的 U-Th-Pb（LA-ICP-MS）地质年代研究结果。研究表明，它们的主要来源是位于托克河盆地附近的中奥陶系黑云母-特长角闪岩正长片麻岩和变质火山岩，以及阿尔丹地盾 Charа-Olekma 地块的中奥陶系和新奥陶系同步和碰撞后花岗岩。此外，在第四纪中-上叶，覆盖南面乌多坎海脊和北面科达尔海脊的冰川融化时，也可能有沉积物质进入盆地。

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

Doklady Earth Sciences 地学-地球科学综合

CiteScore

1.40

自引率

22.20%

发文量

138

审稿时长

3-6 weeks

期刊介绍： Doklady Earth Sciences is a journal that publishes new research in Earth science of great significance. Initially the journal was a forum of the Russian Academy of Science and published only best contributions from Russia. Now the journal welcomes submissions from any country in the English or Russian language. Every manuscript must be recommended by Russian or foreign members of the Russian Academy of Sciences.