摘要
遗迹组构是由生物成因改造的沉积岩组构,它是物理过程和生物过程相互作用的产物。本文在广东韶关晚泥盆世天子岭组碳酸盐岩沉积中建立了4个遗迹组构,即反映局限台地或封闭海湾环境的Planolitesmontanus遗迹组构,反映台地潮下低能环境的Thalassinoides—Planolites遗迹组构,反映潮上-潮间环境的Skolithos遗迹组构和受固底底质控制的Thalassinoides遗迹组构。对遗迹化石和生物扰动构造进行阶层分析,从中识别出受固底底质控制的遗迹化石Thalassinoidessp .,这类遗迹化石常常代表层序地层学中的重要界面。
Ichnofabric is sedimentary rock fabric resulti ng from biogenic reworking and is the product of the interaction of physical and b iological processes. Four ichnofabrics have been found in carbonates from Tianzi ling Formation (Upper Devonian) of northern Guangdong, including: Planol ites montanus ichnofabric reflecting limited platform or obturate bay en vironments; Thalassinoides-Planolites ichnofabric formed in pla tform downtidal low energy zone; Skolithos ichnofabric presered in upper and middle tidalflat sediments; Thalassinoides ichnofabric controlled by firmground subtrate. The firmground substrate trace fossil Thalassinoides sp. demarcates discontinuity surface that reflect pauses in sedimentation, generally accompanied by submarine erosion.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2005年第2期11-14,共4页
Coal Geology & Exploration
基金
河南省高等学校创新人才基金
河南省国际合作项目 (0 4 4 6 6 2 0 0 0 9)资助
关键词
天子岭组
环境解释
遗迹组构
碳酸盐岩
Tianziling Formation
environmental interpretat ion
ichnofabric
carbonate
