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To better understand the characteristics of theclay minerals in the southern Yellow Sea, the X-ray quantita-tive determinations have been carried out for the surfacesamples obtained from the Yellow Sea. With newly compiledclay mineral synoptie maps, the depositional processes weredescribed for four main clay minerals (illite, chlorite, kaolin-ite and smectite). The analysis shows that most clay mineralsare of terrigenous source with the Huanghe River acting asthe major sediment supplier. Besides, the source of muddysediments in the Yellow Sea was also discussed. As for thecentral Yellow Sea mud (CYSM), the sediments in its north-ern part mainly come from the Huanghe River, and those inthe rest are of multi-origin. Very similarly, a large amount ofsediments in the northern part of the southeastern YellowSea Mud (SEYSM) derive from the Keum River and Yeong-san River, while those in the southern part are of multi-ori-gin.
To better understand the characteristics of the clay minerals in the southern Yellow Sea, the X-ray quantita-tive determinations have been carried out for the surfaces samples obtained from the Yellow Sea. With little compiled clay mineral synoptie maps, the depositional processes weredescribed for four main clay The analysis shows that most clay mineralsare of terrigenous source with the Huanghe River acting asthe major sediment supplier. Besides, the source of muddy sediments in the Yellow Sea was also discussed. As for thecentral Yellow Sea mud (CYSM), the sediments in its north-ern part mainly from the Huanghe River, and those inthe rest are of multi-origin. Very similarly, a large amount of sediments in the northern part of the southeastern YellowSea Mud (SEYSM ) derive from the Keum River and Yeong-san River, while those in the southern part are of multi-ori-gin.