长江口及其邻近陆架区沉积物的早期成岩作用     

王益友  张国栋  周福根  仇福康  朱静昌 《矿物岩石地球化学通报》1988,(1)

研究区位于长江口,水动力作用活跃。因直接受长江排泄的悬浮体堆积与影响,沉积速率较高,有机质丰富,是研究陆源碎屑沉积物早期成岩作用的较理想地区。通过水下浅层及近岸钻探取样,以及对样品的pH与Eh值、有机碳、生物细菌、孔隙水化学组分,自生矿物标型特征和稳定同位素值等的分析,本文拟从沉积物的水化学特征、化学作用与反应产物,以及早期成岩作用的标志作一初步探讨。  相似文献   

MODEL OF MODERN DYNAMIC DEPOSITION IN THE EAST CHINA SEA     

周福根 《中国海洋湖沼学报》1989,(3)

Since the last rising of sea level, two branches of the Kuroshio, the Huanghai ( Yellow Sea ) coastal current (HCC; mainly cold water mass)and the Changjiang River outflow have controlled the modem dynamic deposition in the East China Sea. There are three depositing areas on the sea-bed under the above currents: a relict sand area un der the Taiwan Warm Current and the Huanghai Warm Current at the south-eastern area, the about 60 km2 round mud bank under the Huanghai CoastalCurrent at the northernarea and the large subaqueous delta of mainly fine sand and silt under the Changjiang discharge flow in its estuary and the large narrow mud bank under the Zhejiang-Fujian Coastal Current, another round mud bank under the Changjiang discharge flow off Hangzhou Bay. The relict sand area has a coarsesand block under the Taiwan Warm Current bypassing Taiwan at the northern part of the island.The two round mud banks were formed in relatively static states by an anticlockwise converging cyclonic eddy. The coarsesand  相似文献