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长沙市河西、岳麓山东坡之下,湘江之滨,从荣湾镇至湖南大学一带有一片侏罗纪地层展布,南北长约3公里,东西宽约200～300米,露头零星。但是,过去一直把它看作是晚泥盆世地层。1972年元月,施工大桥的民工群众,在大桥河西引桥南侧工地发现了煤层。省革委和煤炭局领导立即指示我队和煤田第六勘探队对该煤矿点进行调查研究。在工作过程中,我们采集了一些化石,先后送中南矿冶学院及南京古生物研究所鉴定,均认为属侏罗纪生物群,而以属早侏罗世的可能性为大。现将长沙湘江大桥河西引桥剖面介绍如下(自南东往北西分布):
Under the east slope of Hexi, Yuelu Mountain and the bank of Xiangjiang River, there is a Jurassic stratigraphic distribution from Rongwan to Hunan University. It stretches about 3 km from north to south and 200-300 m from east to west with sporadic sporadic. However, it used to be regarded as a Late Devonian formation. In January 1972, the migrant workers in the construction bridge discovered the coal seam at the site on the south side of the bridge’s Hexi Approach Bridge. Provincial Revolutionary Committee and the leadership of the Coal Bureau immediately instructed my team and the coal exploration team of the Sixth coal mine site investigation. In the course of work, we collected some fossils, which were successively sent to Zhongnan Mining and Metallurgy Institute and Nanjing Institute of Paleontology for identification. Both of them are considered Jurassic biota, while the possibility of being an Early Jurassic is great. Xiang River Bridge in Changsha is now cross-section profile is described below (from south to northwest distribution):