中国东部晚更新世以来的海水进退
MARINE TRANSGRESSIONS AND REGRESSIONS IN EAST CHINA SINCE LATE PLEISTOCENE EPOCH
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摘要: 我国东部滨海平原及其以东的浅海陆架,是第四纪冰川时期海岸线往复迁移的地带.要掌握海水的进退边界及反复过程,必须在沉积层序学和年代学的广泛研究基础上,依据古滨线沉积和残留地貌标志,与世界典型地区的海面变化模式进行对比,才能获得冰川性海面变化及构造型海面变化在我国东部海面升降及海水进退过程中互相影响、相互消长的时空表现.Abstract: In the quarternary sediments of the coastal plain and shallow sea shelf in East China,there are two continental and three marine facies overlapping in orde in layers,and containing quantity of fossils which demarcated cold or warm climates since Late Pleistocene Epoch,although neither ice-edge nor ice-water sediment have been found.The time of formarion chow that continental and marine facies sediments.Paleogeomagnetic and C14 dating agrees wiht the alternating times of the glacial and interglacial periods of the world.When the and time series of the paleo-sea-levels and the paleo-offshore areas are analyzed,the results indicate that sea level variation in East China is basically consistent with global climatesea level variating periods.
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