Characteristics and Geological Significance of Geological Relics in Qijiang Geopark, Chongqing City
详细信息
- 责任者：Liu Yansong (College of Earth Science ; Chengdu University of Technology ; Chengdu 610059 ; China) ; He Zhengwei
- 刊名：The Chinese Journal of Geological Hazard and Control
- 出版年：2010
- 卷期：21(2)
- 关键词：地质公园 ; geological park ; 地质遗迹 ; geological relics ; 重庆 ; Chongqing
- 页码：p.118-124
- 图表：2 illus., 1 table, 4 photos,9 refs.
- 分类号：1400
- issnNo：ISSN1003-8035
- isbnNo：CN11-2825/P
摘要
///There are fossil wood, dinosaur tracks, dinosaur bone fossils, ichthyolite, sedimentary structures, Danxia landform and other geological relics in Qijiang geopark, and the fossil wood and dinosaur tracks are the guide landscape. Fossil wood distributes in the upper part of Middle Jurassic Shaximiao Formation sandstone beds(J2s). Dinosaur tracks mainly distribute in the Upper Cretaceous Jiaguan Formation sand-shale beds(K2j). There found 329 dinosaur tracks in the three beds of Jiaguan Formation, and the dinosaur tracks belong to Ankylosauria, Ceratopsia and Theropoda respectively. The geological relics of Qijiang geopark distribute in the fluviatile-lacustrine sediment, and develop along with the disintegrate process of the lake system near the Sichuan Basin. The evolution rate of geological relics slowed down when the erosion rate of river was greater than sedimentation rate. The dinosaur tracks in the Upper Cretaceous Jiaguan Formation were formed in the heat and dry environment.
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