黔东北志留纪晚期小溪组沉积环境研究

马会珍; 王雪华

doi:10.11867/j.issn.1001-8166.2014.07.0859

地球科学进展 >

2014 , Vol. 29 >Issue 7: 859 - 864

DOI: https://doi.org/10.11867/j.issn.1001-8166.2014.07.0859

黔东北志留纪晚期小溪组沉积环境研究

马会珍 ,
王雪华

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贵州省地质调查院,贵阳,550005

作者简介:马会珍(1978 -) ,女,硕士研究生,贵州省地质调查院工作,主要从事古生物与沉积环境方面的生产和研究工作。

网络出版日期: 2014-07-10

基金资助

本文由国家地调局《贵州省地质系列图件编制与综合研究项目》(项目编码: 1212011120108);贵州省地矿局科研项目《黔东北地区志留系回星哨组(?)植物化石的发现及其地质意义》资助

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A Study of the Sedimentary Environment of the Xiaoxi Formation in NE of Guizhou, China

Hui-zhen Ma ,
Xue-hua Wang

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Guizhou Geological Survey, Guiyang 550005

Online published: 2014-07-10

Copyright

Advance in Earth Sciences Editorial, 2014, This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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摘要

黔东北印江合水和石阡乌谷溪的小溪组中发育良好的遗迹化石,经鉴定共计有5个属的遗迹化石：Palaeophycus isp.,Rusophycus isp.,Planolites isp.,Gordia isp.和 Phycodes isp.。根据遗迹化石的组合特征,该组合属于Cruziana遗迹相。结合2个剖面的沉积构造和砂岩粒度分析结果,认为小溪组的沉积环境为相对安静的平均低潮线以下的临滨带。

关键词： 小溪组; 沉积环境; 志留系; 黔东北

本文引用格式

马会珍 , 王雪华 . 黔东北志留纪晚期小溪组沉积环境研究[J]. 地球科学进展, 2014 , 29(7) : 859 -864 . DOI: 10.11867/j.issn.1001-8166.2014.07.0859

Abstract

The Xiaoxi Formation is well developed in two sections (Heishui, Yinjiang and Wuguxi, Shiqian), NE of Guizhou, China.This formation is composed of the sandstones, siltstones and mudstones, and preserved with the depostional structures and trace fossils. This paper focuses on the study of the sedimentary environment of the Xiaoxi Formation based on the materials from these sections. Five ichospecies are identified from two sections, including Palaeophycus isp., Rusophycus isp., Planolites isp., Gordia isp. and Phycodes isp. These trace fossils belong to the Cruziana ichofacies, Based on the depositonal structures, the ichofaces and the result of particle size analysis, the sedimentary environment of the Xiaoxi Formation of Silurian in NE of Guizhou is nearshore zone with a relativealy and stable environment under the average low tide line.

Key words： Xiaoxi Formation; Sedimentary environment; Silurian; NE of Guizhou.

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