| 向坤鹏,陈明华,邓小杰,龙建喜,史振华,冉维宇.贵州望谟纳夜领薅组上部遗迹化石特征及地质意义[J].贵州地质,2021,38(3):256-262 |
| 贵州望谟纳夜领薅组上部遗迹化石特征及地质意义 |
| The Characteristics of the Trace Fossils and Its Geological Significance of the Upper Linghao Formation in Naye of Wangmo，Guizhou Province |
| 投稿时间：2021-02-11 |
| DOI： |
| 中文关键词: 遗迹化石 沉积构造 沉积环境 领薅组 纳夜地区 |
| 英文关键词:Trace fossil Sedimentary structure Sedimentary environment Linghao formation Naye region |
| 基金项目:贵州省科技厅科技支撑项目(黔科合支撑[2019]2851号)；贵州省地质调查院院士工作站项目(黔科合平台人才[2018]5626)资助。 |
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| 中文摘要: |
| 贵州望谟纳夜中-晚二叠世领薅组上部发育丰富的遗迹化石，主要识别出Chondrites，Planolites，Keckia及Helminthopsis等。含遗迹化石层段下部以Chondrites为优势化石种属，具有较高的丰度，向上逐渐被Planolites和Helminthopsis替代，整体形成以觅食迹为主的遗迹化石组合。根据领薅组上部岩石组合、沉积构造以及露头尺度遗迹化石的空间分布规律，结合区域地质资料综合分析认为:纳夜地区在中-晚二叠世整体为相对闭塞的浅海还原环境，遗迹化石是高水位体系沉积作用下的产物，其分布与海平面升降关系密切。化石组合的纵向变化规律指示向上水体整体变浅。这对于进一步认识贵州南部地区中-晚二叠世沉积演化提供了依据。 |
| 英文摘要: |
| Abundant trace fossils existed in the upper part of the Middle-Late Permian Linghao formation in Naye of Wangmo，Guizhou province，and Chondrites，Planolites，Keckia and Helminthopsis are mainly identifiedIn the lower part of the trace fossil-bearing strata of Linghao Formation，Chondrites were the dominant fossil species with high abundance，and the upper part was gradually replaced by Planolites and Helminthopsis，forming a fossil assemblage dominated by foraging tracks as a wholeAccording to the rock association，sedimentary structure and the distribution characteristics of the trace fossils，combined with regional geological data，this study proposed that the Naye region was a relatively closed reductive environment in shallow sea during the Middle-Late Permian，and the distribution of trace fossil was closely related to the rise and fall of sea level，which was the product of the deposition of the high water level systemThe vertical variation of fossil assemblage indicated that the upward water became shallow as a wholeThis study provides a basis for further understanding of the Middle-Late Permian sedimentary-tectonic evolution in the southern Guizhou |
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