The calcareous nannofossils and magnetostratigraphic results from the Upper Tithonian–Berriasian of Feodosiya region (Eastern Crimea)

IF 1.5 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Geologica Carpathica Pub Date : 2019-08-01 DOI:10.2478/geoca-2019-0020

V. Arkadiev, Marina Lescano, A. Concheyro, A. Guzhikov, E. Baraboshkin

引用次数: 3

Abstract

Abstract This article is concerned with nannofossil study of Tithonian–Berriasian sediments of Eastern Crimea. The NJT 16, NJT 17a, NJT 17b, NKT, and NK 1 nannofossil zones were determined. The occurrence of Nannoconus kamptneri minor, one of the potential marker-types of the Tithonian–Berriasian boundary (the base of the NKT Zone) of the Tethyan sequence in the Feodosiyan section is assigned here to the Pseudosubplanites grandis ammonite Subzone and the magnetic Chron M18n. The base of the NKT Zone is closer to the Grandis Subzone base than to the base of the Jacobi Subzone. Contradictions in the interpretation of magnetic chrons obtained by the present authors (Arkadiev et al. 2018) and by Bakhmutov et al. (2018) might be caused by mistakes admitted in the latter work on the compiled section.

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Feodosiya地区（克里米亚东部）上提香阶-Berriasian的钙质超微化石和磁性地层学结果

摘要本文对克里米亚东部的提香阶-贝里亚阶沉积物进行了超微化石研究。NJT 16，NJT 新泽西州17a 17b、NKT和NK 确定了1个超微化石带。小Nannocous kamptneri的产状是Feodosiyan剖面中Tethyan序列的Tithonian-Berriasian边界（NKT带的基底）的潜在标志物类型之一，在这里被划分为大拟亚平面菊石亚区和磁性Chron M18n。NKT区的基底更接近Grandis亚区的基底，而不是Jacobi亚区的底部。本作者（Arkadiev等人，2018）和Bakhmutov等人（2018）对磁时间的解释存在矛盾，这可能是由于后一篇关于汇编部分的工作中承认的错误造成的。

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

Geologica Carpathica 地学-地球科学综合

CiteScore

2.40

自引率

23.10%

发文量

审稿时长

>12 weeks

期刊介绍： GEOLOGICA CARPATHICA covers a wide spectrum of geological disciplines including geodynamics, tectonics and structural geology, volcanology, stratigraphy, geochronology and isotopic geology, karstology, geochemistry, mineralogy, petrology, lithology and sedimentology, paleogeography, paleoecology, paleobiology and paleontology, paleomagnetism, magnetostratigraphy and other branches of applied geophysics, economic and environmental geology, experimental and theoretical geoscientific studies. Geologica Carpathica , with its 60 year old tradition, presents high-quality research papers devoted to all aspects not only of the Alpine-Carpathian-Balkanian geoscience but also with adjacent regions originated from the Mediterranean Tethys and its continental foreland. Geologica Carpathica is an Official Journal of the Carpathian-Balkan Geological Association.