中国中—新生代陆相沉积中的遗迹群落  

The Ichnocoenoses of Mesozoic-Cenozoic Terrestrial Deposits of China

作　　者：胡斌[1] 齐永安[1] 张国成[1] 姜在兴[2] 

机构地区：[1]焦作工学院,河南焦作454000 [2]石油大学,山东东营257062

出　　处：《沉积学报》2002年第4期574-581,共8页Acta Sedimentologica Sinica

基　　金：国家自然科学基金项目 (批准号 :40 1 72 0 4 5);国家"十五"科技攻关项目 (中国油气资源发展关键技术研究批准号 :2 0 0 1BA60 5A0 9)联合资助

摘　　要：中国中新生代陆相沉积地层中的遗迹化石已知七大生态类型近 4 0种 ,按其形成的沉积环境可大致划分为三大遗迹群落 ,即①Scoyenia遗迹群落 ,代表冲积平原或三角洲平原至滨湖环境 ;②Macaronichnus Planolites遗迹群落 ,主要产生于浅湖环境及水下砂扇 (扇三角洲、浊积扇 )沉积环境 ;③Mermoides Neonereites遗迹群落 。The seven ethological types (about 40 ichnospecies) of trace fossils in Mesozoic-Cenozoic terrestrial deposits of China were briefly summarized. According to their palaeoecological and sedimentological features , these trace fossils can be divided into 3 larger ichnocoenoses, i.e. (1) Scoyenia ichnocoenosis, occurring in the alluvial plain or delta plain and shore deposits including extremely shallow lacustrine deposits, which is characterized by the fully abundant Scoyenia ichnogenus, and commonly associated with Steinichnus, Beaconites, Taenidium, Cystichnium, Palaeophycus, Gordia, Planolites, Paradidymaulichnus, Monomorphichnus, Cf.Oniscoidichnus, Rusophycus, Pelecypodichnus, Arenicolites, Skolithos, Margaritichnus, Macaronichnus, Planolites and Rhizoliths and so on . These tracefossils may be further divided into 4 assemblages including Scoyenia-Steinichnus-Rusophycus assemblage formed in the regularly desiccated flood plain and overbank origin, Scoyenia-Beaconites-Palaeophycus assemblage resulted from the regularly desiccated muddy and sandy shore or extremely shallow lacustrine deposits in the delta plain, Skolithos-Arenicolites assemblage associated with the point bar, deltaic distributary channel bar, distributary mouth bar and sandy shore deposit environments, and Macaronichnus -Rhizoliths assemblage related to the depression deposit settings between delta plain distributary channel; (2) Macaronichnus-Planlites ichnocoenosis, forming in the shallow lacustrine deposits including lower delta fan and turbidity fan deposits or flood deposits (inundates), which mainly consists of a set of Macaronichnus, Planolites (varied size of types) , Monocraterion, Skolithos, Arenicolites, Gordia, Palaeophycus, Cochlichnus, Helminthoidichnites,Helminthopsis and Brevitubus and so on, they may be also divided into 2 assemblages containing Macaronichnus-Monocraterion assemblage and Macaronichnus Helminthopsis assemblage, the former occurs in the delta front sheet bar, sand fan or

关 键 词：新生代 遗迹化石 陆相沉积 遗迹群落 中国 谭庄组 第三系 

分 类 号：Q911.28[天文地球—古生物学与地层学]