New pleistocene key section Ulan-Zhalga of the Western Transbaikalia

Доклады Академии наук Pub Date : 2019-09-26 DOI:10.31857/s0869-56524883277-281

M. Erbajeva, М А Ербаева, A. Shchetnikov, А А Щетников, A. Kazansky, А Ю Казанский, G. Matasova, Г Г Матасова, F. Khenzykhenova, Ф И Хензыхенова, I. A. Filinov, И А Филинов, O. D. Namzalova, О Намзалова Д-Ц., I. V. Nechaev, И О Нечаев

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Abstract

The currant paper presents the preliminary results of the multidisciplinary study of the new Pleistocene section Ulan-Zhalga (51°29′40.75″ С, 107°20′18.11″ В) discovered in the Western Transbauikalaia in 2017. On the base of the paleontological, paleomagmetic, and lithological data the early, middle and late Pleistocene sediments were recognized in the section. The analysis of the rich small mammal fossils resulted in to trace the paleoenvironmental and climatic changes in the region during the Quaternary. The unique alternation of the 19 faunistic horizons and 11 fossil soils in the whole section, the high correlation of the paleomagnetic and paleontological data allow us to refer the studied section Ulan-Zhalga to addition new late Cenozoic Key section of the south Eastern Siberia. The new geological and paleontological data would be important for paleogeographical reconstruction and biostratigraphic analysis.

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西外贝加尔地区乌兰-扎尔嘎新更新世关键剖面

本文介绍了2017年在西跨包卡拉亚地区发现的乌兰-扎尔加新更新世剖面(51°29′40.75″С， 107°20′18.11″В)多学科研究的初步结果。根据古生物学、古地磁和岩性资料，确定了该区早、中、晚更新世沉积物。通过对丰富的小型哺乳动物化石的分析，可以追溯该地区第四纪的古环境和气候变化。整个剖面19个动物层位和11个土壤化石的独特交替，以及古地磁资料和古生物资料的高度相关性，使我们可以参考乌兰-扎尔嘎剖面添加新的晚新生代西伯利亚东南部关键剖面。这些新的地质古生物资料对古地理重建和生物地层分析具有重要意义。

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