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珠江三角洲的野外调查工作,北界西起广利向东经广州到石龙以东;南界西起黄茅海向东经万山群岛到香港,面积约1万平方公里.研究工作包括陆上和水下施工钻孔28个,搜集前人钻孔资料250个,在西江、珠江主要河段及狮子洋、伶仃洋、黄茅海等8个口门,水深40米以内取箱式原装样和柱状样165个站位,实测浅地层剖面1600多公里,分析鉴定各类样品2066个,取得了较为丰富的第一性资料.在前人研究的基础上,对珠江三角洲的形成和演化,有了进一步的认识.本文所涉及的内容只是关于海平面变化问题.
Pearl River Delta field investigation, the north boundary of Guangli from east to Guangzhou via Guangzhou to east of Shilong; the south boundary of Huangmaohai west of Wanshan Islands to Hong Kong, an area of about 10,000 square kilometers .Research work includes onshore and There are 28 underwater drilling holes and 250 former drilling holes collected. In the Xijiang River and Pearl River main reaches and 8 portals such as Lion’s Ocean, Lingdingyang Sea and Huang Maohai, Column-like 165 stations, the measured shallow formation section 1600 km, 2066 samples of various types of analysis and identification, and obtained a wealth of first-class information on the basis of previous studies on the formation and evolution of the Pearl River Delta, there For further understanding.This paper is concerned with the issue of sea level change.