| 义县组底部层位发现恐龙化石 |
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| 引用本文： | 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. |
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| 作者姓名： | 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 |
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| 作者单位： | 1. 东北大学资源与土木工程学院, 辽宁 沈阳 110004;2. 沈阳地质矿产研究所, 辽宁 沈阳 110033;3. 宜昌地质矿产研究所, 湖北 宜昌 443003 |
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| 摘 要： | 义县组是一套中生代火山-沉积地层，含有丰富的以热河生物群为代表的生物化石.20世纪80年代以来，在义县组沉积夹层中陆续发现珍稀鸟类、小型兽脚类恐龙中华龙鸟，以及原始被子植物辽宁古果等珍稀化石，但是有关珍稀化石沉积层的空间分布、上下层位关系、沉积环境和时代归属等问题，一直悬而未决，中国地质调查局东北地区地调中心从1999年10月开始，对辽宁省北票市-义县之间的义县组进行了1：5万区域地质调查填图，不仅确定了珍稀化石沉积层在地层层序中的确切位置，而且在珍稀化石沉积层以下，即义县组底部发现了大量恐龙化石.
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| 关 键 词： | 义县组 底部层位 恐龙化石 鹦鹉嘴龙 辽宁省 |
| 收稿时间： | 2001-12-23 |
DISCOVERY OF FOSSIL DINOSAURS IN THE BASAL AND LOWER BEDS OF YIXIAN FORMATION,WESTERN LIAONING PROVINCE,CHINA |
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| ZHANG Li-dong,GUO Sheng-zhe,ZHANG Chang-jie,PENG Yan-dong,JIA Bin,CHEN Shu-wang,XING De-he,DING Qiu-hong,WANG Xiao-feng,GU Feng.DISCOVERY OF FOSSIL DINOSAURS IN THE BASAL AND LOWER BEDS OF YIXIAN FORMATION,WESTERN LIAONING PROVINCE,CHINA[J].Geology and Resources,2002,11(1):9-15. |
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| Authors: | ZHANG Li-dong GUO Sheng-zhe ZHANG Chang-jie PENG Yan-dong JIA Bin CHEN Shu-wang XING De-he DING Qiu-hong WANG Xiao-feng GU Feng |
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| Institution: | 1. Institute of Resources and Civil Engineering, Northeast University, Shenyang 110004, China;2.Shenyang Institute of Geology and Mineral Resources,Shenyang 110033,China;3.Yichang Institute of Geology and Mineral Resources,Yichang 443003,China |
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| 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. |
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| Keywords: | Yixian Formation basal and lower beds Dinosaurs Psittacosaurus Liaoning Province |
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