The Problem of Dating the Kuyeda-Klyuchiki Section – a Unique Locality of Permian Vertebrates (Perm Region, Russia)

IF 0.4 Q4 MULTIDISCIPLINARY SCIENCES Uchenye Zapiski Kazanskogo Universiteta. Seriya Estestvennye Nauki Pub Date : 2021-01-01 DOI:10.26907/2542-064x.2021.3.444-465

A. Bakaev, V. V. Bulanov, I. Ilaltdinov, D. Kozhanov, G. Ponomareva, I. Khopta

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引用次数: 2

Abstract

The Kueda-Klyuchiki locality of Permian vertebrates located in the south of the Perm Region in the Kuedinsky District was discovered in 2005 and quickly became known among paleontologists. The locality contains a rich complex of exceptionally preserved plants and vertebrates (fish, amphibians, and reptiles). Their remains are confined to limestones of various textures, which form two bone-bearing beds in the section of the quarry. However, the age of rocks remains a controversial issue. This research aims to analyze and compare various stratigraphic markers and discuss a number of existing stratigraphic inconsistencies in an attempt to arrive at a general conclusion about the age of the locality. According to geological survey data on a scale of 1:200 000, the Buraevo Sequence (Sheshmian Formation, Ufimian Stage) was identified in the territory of the quarry. At the boundary of the Sheshmian and Belebey Formations, a mineralogical “boundary” is observed, which is manifested in a decrease

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Kuyeda-Klyuchiki剖面的年代测定问题——俄罗斯彼尔姆地区二叠纪脊椎动物的一个独特地区

二叠纪脊椎动物的Kueda-Klyuchiki地区位于Kuedinsky区的Perm地区南部，于2005年被发现，并迅速在古生物学家中广为人知。该地区保存了丰富的植物和脊椎动物(鱼类、两栖动物和爬行动物)。他们的遗骸被限制在各种质地的石灰石中，在采石场的部分形成了两个含骨床。然而，岩石的年龄仍然是一个有争议的问题。这项研究旨在分析和比较各种地层标志，并讨论一些现有的地层不一致，试图对该地区的年龄得出一个总的结论。根据1:20万比额的地质调查资料，在采石场范围内确定了Buraevo层序(乌米阶佘石面组)。在舍什面组和别勒贝组的界线处，观察到矿物学上的“界线”，表现为减少

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