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长江中游荆江河段蜿蜒于江汉平原之上,在公安县杨厂河床中有一孤立卵石洲出现,关于卵石的来源,成因等已成为有关工程技术部门及当地群众所关注,为此,我们在前人工作的基础上经过反复调查研究发现,这是一种新的洲滩类型,以砾为洲壳,而洲核仍为细砂的双层构造,故称壳状卵石洲(简称壳洲),我们在研究荆江壳洲的基础上,又对长江支流沮漳河、虎渡河、以及汉江和洞
The Jingjiang section of the middle reaches of the Yangtze River meanders above the Jianghan Plain, with an isolated pebble in the Yangchang Riverbed in Gong’an County. Concerning the sources and causes of pebbles, it has become a concern of engineering departments and local people. For this reason, On the basis of previous work, after repeated investigations and studies, it is found that this is a new type of continental beach with gravel as the crust, while the continental core is still a double-layer structure with fine sand. Therefore, the crustal pebble (Shell Island ), We study the Jingjiang shell Island, based on the Yangtze River tributaries Juzhang River, Tiger River, and the Han River and Cave