广西十万大山晚三叠世陆相遗迹化石
LATE TRIASSIC FRESH-WATER TRACE FOSSILS FROM THE SHIWAN MOUNTAINS,GUANGXI PROVINCE
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摘要: 本文所研究的陆相遗迹化石,特别是晚三叠世陆相遗迹化石在我国还是首次报道。研究的标本系笔者于1983年5月初与我所刘训、傅德荣二位同志赴广西十万大山进行野外地质调查时,在陆相上三叠统扶隆坳组中共同采获的。扶隆坳组为一套陆相红色碎屑岩系,以砾岩、砂岩、粉砂岩和泥岩为主,实体化石贫乏。在本组的中部仅产有数量多,种类单调的遗迹化石,它们是:Thalassinoides sp.,Pascichnia。这些遗迹化石的发现,对今后研究我国陆相地层中的遗迹化石,有着一定的参考价值。笔者在研究过程中,曾多次得到杨式博教授的指导和帮助;在野外工作期间,广西石油队及陆锦标工程师给予了很大的支持;我所照像室陈殿丰技师摄制照片,在此一并致以Abstract: Late Triassic red beds of the Fulongao Formation exposed on the Shiwan Mountains in southern Guangxi consist mainly of red conglomerate, sandstone,siltstone and mudstone,in which body fossils are absent. The fresh-water trace fossils occurring in the middle part of the Fulongao Formation include Thalassinoides sp., Pascichnia,etc., representing probably a fluvial flood-plain environment. The fresh-water trace fossils described here are first reported in China.
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