湖北省恐龙蛋化石产出及埋藏特征  

Production and Burial Characteristics of Dinosaur Egg Fossils in Hubei Province

作　　者：崔亚圣 余浩宇 王伟 辛杰 李乐 吴奎 何衍鑫 彭小桂 Cui Yasheng;Yu Haoyu;Wang Wei;Xin Jie;Li Le;Wu Kui;He Yanxin;Peng Xiaogui(Hubei Institute of Geosciences,Wuhan,Hubei 430034;Hubei Key Laboratory of Resources and Eco-Environment Geology,Wuhan,Hubei 430034;School of Earth and Space Sciences,Peking University,Beijing 100871)

机构地区：[1]湖北省地质科学研究院,湖北武汉430034 [2]资源与生态环境地质湖北省重点实验室,湖北武汉430034 [3]北京大学地球与空间科学学院,北京100871

出　　处：《资源环境与工程》2023年第5期504-510,共7页Resources Environment & Engineering

基　　金：湖北省地质勘查基金项目(鄂地勘基金合[2020]12号);湖北省地质局科技项目(KJ2021-31)。

摘　　要：恐龙蛋化石作为重要的遗迹化石,对研究古生物、古构造、古环境和促进地方文化旅游发展都具有重要意义。湖北省是重要的恐龙蛋化石产地,但其产出和埋藏特征缺乏系统性总结,成为进一步开展恐龙蛋化石研究的不利因素。通过野外考察、薄片鉴定和古生物分析,系统总结湖北省恐龙蛋化石的产出地质背景、产出特征及埋藏特征,综合分析恐龙蛋化石的埋藏环境和类型,探索晚白垩世恐龙的生活习性。研究表明,湖北省恐龙蛋化石赋存量大、分布广、数量多、类型丰富、埋藏浅、保存完整、成窝性好;均产出于上白垩统洪积相—湖泊相沉积体系,多数产于泛滥平原沉积环境中,极少数产于洪积扇扇根重力流沉积中,赋存岩性主要为粉—细砂岩、含钙质结核粉—细砂岩和含砾中—粗砂岩等3种类型;以蛋窝状产出为主,在蛋窝中的排列方式主要为交错平行、多层平行和不规则排列,以原地埋藏为主,推测产树枝蛋的母体恐龙具有较高的产蛋率,并有群居或杂居的习性,习惯于在某个时期内迁徙至固定环境集中产蛋。As an important relic fossil,dinosaur egg fossils are of great significance to the study of paleontology,paleostructure,paleoenvironment and the promotion of local cultural tourism development.Hubei Province is an important producing area of dinosaur egg fossils,but the lack of systematic summary of its output and burial characteristics has become an unfavorable factor for further research on dinosaur egg fossils.Through field investigation,thin section identification and paleontological analysis,this paper systematically summarizes the geological background,output characteristics and burial characteristics of dinosaur egg fossils in Hubei Province,comprehensively analyzes the burial environment and types of dinosaur egg fossils,and explores the living habits of late Cretaceous dinosaurs.The research shows that the dinosaur egg fossils in Hubei Province have a large amount of occurrence,wide distribution,large quantity,rich types,shallow burial,complete preservation and good nesting.They are all produced in the sedimentary system of the upper Cretaceous alluvial-lacustrine facies.Most of them are produced in the sedimentary environment of the flood plain,and very few are produced in the gravity flow deposit of the alluvial fan root.The lithology is mainly three types:silt-fine sandstone,calcareous concretion-bearing silt-fine sandstone and gravel-bearing medium-coarse sandstone.They are mainly produced in the form of egg nests.The arrangement in the egg nests is mainly staggered parallel,multi-layer parallel and irregular arrangement,which is mainly buried in situ.It is speculated that the parent dinosaur that produces branch eggs has a high egg production rate.And have the habit of gregarious or mixed living,accustomed to migrating to a fixed environment within a certain period of time to concentrate on laying eggs.

关 键 词：恐龙蛋化石 产出特征 埋藏特征 湖北省 

分 类 号：Q915.21[天文地球—古生物学与地层学]