古地理学报2013，Vol.15Issue(4)：435-453,19.DOI:10.7605/gdlxb.2013.04.036
山东沭河裂谷带早白垩世晚期恐龙足迹群与古地理背景
Dinosaur track sites and palaeogeography of the late Early Cretaceous in Shuhe Rifting Zone of Shandong Province
摘要
Abstract
Eight dinosaur track sites in the upper Lower Cretaceous (Dasheng Group) were found along the 300 km-long northeast-trending Shuhe Rifting Zone in the south-central Shandong Province according to the recent field investigations.Five track sites among them were newly discovered.Especially,the huge sauropod footprints with the diameter about 1.0 m in Tancheng,may be the second to the biggest sauropod footprints from Yanguoxia,Gansu,China.The footprints were marked in the Tianjialou Formation of Dasheng Group during the maximum flooding period,about 110-100 Ma (Aptian-Albian).The footprints were mostly concave,mainly from sauropod,secondly from theropod and ornithopod.Most dinosaurs meandered slowly.Generally,footprints existed in the fine sandstone and siltstone,always accompanied by ripples,mud cracks and rain prints.The in-situ preservation of footprints and the sedimentary characteristics showed that dinosaurs lived in the lake shore environments where would be the better preservation sites for footprints.The climate at the late Early Cretaceous in this area were from warm humid to hot arid.Comparing with other preservation environment in the same period,it proved that dinosaur faunas had distributed in an even wider area with similar palaeogeography in the Early Cretaceous.关键词
沭河裂谷带/早白垩世/大盛群/恐龙足迹/古地理Key words
Shuhe Rifting Zone/Early Cretaceous/Dasheng Group/dinosaur footprint/palaeogeography分类
天文与地球科学引用本文复制引用
旷红伟,柳永清,吴清资,程光锁,许克民,刘海,彭楠,许欢,陈军..山东沭河裂谷带早白垩世晚期恐龙足迹群与古地理背景[J].古地理学报,2013,15(4):435-453,19.基金项目
国家自然科学基金重点项目(编号:90914003)、国家自然科学基金面上项目(编号:41272021)、中国地质科学院地质研究所基本业务费项目(编号:J1106)及中国地质调查局项目(编号:1212011085477,1212011120105,12120113096500)共同资助 （编号:90914003）
