成都理工大学学报（自然科学版）2018，Vol.45Issue(3)：334-343,10.DOI:10.3969/j.issn.1671-9727.2018.03.08
龙门山早—中泥盆世Chondrites类型及其环境意义
Ichnogenera of Chondrites of the early-middle Devonian in Longmenshan area of China and its environmental significances
摘要
Abstract
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 Chondrites ichnospecies 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-Lockeia ichnocoenosis 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.关键词
Chondrites/泥盆纪/遗迹化石/环境意义/龙门山Key words
Chondrites/Devonian/trace fossil/environmental significances/Longmenshan分类
天文与地球科学引用本文复制引用
姜涛,李凤杰,杨晓琪,荆锡贵,成晓雨,张昊,沈凡..龙门山早—中泥盆世Chondrites类型及其环境意义[J].成都理工大学学报（自然科学版）,2018,45(3):334-343,10.基金项目
国家自然科学基金项目(41172100) （41172100）
成都理工大学沉积地质学科研创新团队项目(KYTD201703). （KYTD201703）
