地质与资源2002，Vol.11Issue(1)：9-15,7.
义县组底部层位发现恐龙化石
DISCOVERY OF FOSSIL DINOSAURS IN THE BASAL AND LOWER BEDS OF YIXIAN FORMATION,WESTERN LIAONING PROVINCE,CHINA
摘要
Abstract
By two years' field work, the regional geological surveying and mapping on the scale of 1: 50 000 in Beipiao Yixian district have achieved great progress.The research work shows that the Yixian Formation in Beipiao district may be lithologically subdivided into 4 members(in ascending order):1)the first member,including the basal conglomerate and intermediate basic volcanic rocks; 2)the second member, the lacustrine sedimentary rock member; 3)the third member,the upper basic volcanic rock member;and 4)the fourth member,with a base of conglomerate and graywacke with gravels,and middle upper part consisting of acid intermediate volcanic rocks and interlayer sediments(such as Jingangshan layer).Among them,the 2nd member contains abundant fossils of " Jehol Biota" ,including the precious and famous Sinosauropteryx,Confuciusornis,Archaefructus etc.Moreover,a lot of fossil dinosaurs are found recently in the 1st members.The discovery not only enriches the early fossil elements of the Yixian Formatrton,help the investigation on the living environment of the dinosaurs and the reason for their extinction,but also gives an important fossil evidence for determination of the age of Yixian Formation.关键词
义县组/底部层位/恐龙化石/鹦鹉嘴龙/辽宁省Key words
Yixian Formation/basal and lower beds/Dinosaurs/Psittacosaurus/Liaoning Province分类
天文与地球科学引用本文复制引用
张立东,郭胜哲,张长捷,彭艳东,贾斌,陈树旺,邢得和,丁秋红,汪啸风,谷峰..义县组底部层位发现恐龙化石[J].地质与资源,2002,11(1):9-15,7.基金项目
Regional geological Surveying on the Sheet K51E014004(1:50 000) and others, sponsored by China Geological Survey. （1:50 000）
