Trace fossil assemblage of Oligocene (Barail Group) from Zote Area, Champhai District, Mizoram

科技视界 Pub Date : 2022-01-25 DOI:10.33493/scivis.21.04.02

引用次数: 0

Abstract

The Barail Group (Oligocene) of Zote section, Champhai district, Mizoram has been studied, for the first time, on the basis of trace fossil. The study areas consist of different rocks like Sandstone, siltstone, shale and their admixture in various proportion. The present paper documents 14 ichnofossils such as Arenicolites isp., Gyrolithes lorcaensis, Helminthopsis abeli, H. hieroglyphica, H. tenuis, Laevicyclus mongraensis, Lanicodichna medulata, Palaeophycus sulcatus, P. heberti, Psilonichnus tubiformis, Skolithos linearis, S. verticalis, Teichichnus spiralis and Thalasinoides paradoxicus. The different ichnoassemblages present in Zote area correspond to the Psilonichnus, Skolithos and Cruziana facies. With the analysis of Ichnofacies and lithofacies, studied rock of Barail Group exposed in Zote area is interpreted as to have been deposited under fluctuating energy condition, sandy substrate to sublittoral zone of shallow marine environment.

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米佐拉姆邦Champhai地区Zote地区渐新世(Barail群)化石组合

首次利用微量化石对米佐拉姆邦Champhai地区Zote剖面Barail群(渐新世)进行了研究。研究区由不同比例的砂岩、粉砂岩、页岩及其混合物组成。本文记录了砂粒石等14种鱼类化石。、洛尔卡螺、阿贝螺、象形拟南芥、细尾拟南芥、蒙古白尾拟南芥、中脉细尾拟南芥、长尾拟南芥、赫比提拟南芥、管状拟南芥、线性拟南芥、垂直拟南芥、螺旋拟南芥和吊海拟南芥。Zote地区不同的组合对应于Psilonichnus相、Skolithos相和Cruziana相。通过对Zote地区Barail群暴露的岩相、鱼相分析，认为所研究的岩石是在波动能量条件下沉积的，为浅海环境下的砂质基底。

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

科技视界

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期刊介绍： Science & Technology Vision is a science and technology journal supervised by the Shanghai Association for Science and Technology and sponsored by the Shanghai Science Writers Association. It takes grassroots science and education workers as readers, popularizes scientific knowledge, tracks hot issues in science and technology at home and abroad, pays attention to new developments, new technologies, and new achievements in the forefront of the science and technology community, adheres to the combination of theory and practice, popularization and exploration, integrates scientificity, knowledge, academicity, and foresight, and builds a platform and theoretical position for academic debate for the majority of science and technology workers. Science & Technology Vision has been fully included in "China National Knowledge Infrastructure", "Chinese Science and Technology Journal (VIP) Database", "Longyuan Journal Network", "Education Reading Network", and "Wanfang Database".