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在海图上早就以“砾石”符号表示了南黄海一带钙质结核(下文简称结核)的存在。但1958年全国海洋综合调查之后,它们的分布范围才初步被确定下来,并以明确的符号标於底质图上。不过始终没有人去探索这些结核的特征和成因。近年来,由於海洋调查的广泛展开,它的存在引起了不少海洋地质工作者的兴趣,相继对它进行了多方面的研究。但在它的成因方面,众说纷纭:有的认为是海底自生的,至今仍在不断地生长;有的则认为,除了自生之外,还有一种结核是属于被海水淹没的黄泛区物质,
On the chart, the “gravel” symbol has long been used to indicate the presence of calcareous nodules (hereinafter referred to as tuberculosis) in the southern Yellow Sea. However, after the National Integrated Marine Survey in 1958, their distribution was initially determined and marked with clear symbols on the bottom map. However, no one has ever explored the characteristics and causes of these tuberculosis. In recent years, due to the extensive development of marine surveys, its existence has aroused the interest of many marine geologists and conducted many studies on it in succession. However, there are many controversies about its causes: some think it is submarine self-sustaining and still continue to grow. Others think that in addition to its own existence, there is another type of tuberculosis that belongs to the floodplain submerged by the sea water,