Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Chengdu University of Technology(Science & Technology Edition)》 2018-03
Add to Favorite Get Latest Update

Ichnogenera of Chondrites of the early-middle Devonian in Longmenshan area of China and its environmental significances

JIANG Tao;LI Fengjie;YANG Xiaoqi;JING Xigui;CHENG Xiaoyu;ZHANG Hao;SHEN Fan;State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Chengdu University of Technology;Xinjiang Coal Natural Gas Transmission Pipeline Co.,Ltd.,SINOPEC;  
Total 8 ichnospecies of the Chondrites fossil,including Chondrites expansus,Chondrites cf.fenxiangensis,Chondrites filiformis,Chondrites isp.,Chondrites targonii,Chondrites type-C,Chondrites cf.type-C and Chondrites intricatus are preserved and identified in the early-middle Devonian strata of Guixi-Shawozi section,Sichuan,China.These Chondritesichnospecies belong to 3 Chondrites ichnocoenoses,single Chondrites ichnospecies type,double Chondrites ichnospecies type and multiple Chondrites ichnospecies type respectively.The Chondrites trace fossils distributed in shore to shelf deposit environment are appertained to Chondrites-Phycodes ichnocoenosis and Chondrites-Lockeia ichnocoenosis,the Chondrites-Phycodes ichnocoenosis represent shallow shelf surrounding with abundant food and relatively low oxygen content.However,the Chondrites-Lockeiaichnocoenosis represent shallow shelf,a normal oxygen condition with plenty of oxygen environment.It reveals that these Chondrites trace fossils lived in 3 kinds of sedimentary environment,including deep water shelf condensed section,shallow shelf and storm deposit environment in the Longmenshan area.Besides,Chondrites fossils in condense section reflect suboxic environment,the rest represents normal oxygen environment.There is no correspondence between Chondrites branch diameter and its palaeo-oxygenation facies.
【Fund】: 国家自然科学基金项目(41172100);; 成都理工大学沉积地质学科研创新团队项目(KYTD201703)
【CateGory Index】: Q915
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved