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辽西六股河口附近砂积体与全新世海水入侵趋势的探讨
符文侠1, 石厥民1, 李光天1, 魏成凯1, 贾锡钧1, 何宝林1, 焦亚宁1
国家海洋局海洋环境保护研究所
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EXPLEHING THE HOLOCENE TRANSGRESSION TREND ON THEBASIN OF SAND MOUND NEAR LIUGU RIVERESTUARY IN WESTERN LIAONING
Abstract:
Holocene transgression trend in the near-shore of western Liaoning was studied on the basis of sand accumulation geomorphy and sedimentary character. The data 14C show that transgression had taken place in this region 8000-7000 years ago, the river valley was flooded, sea water reached as far as 5 to 10 km upstream but no more than 20 km, equivalent to 5 to 7 m above the normal sea level. Thickness of marine phase was from 20 km to 25 km. Sea water regressed in 5000-4000 B. P.
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