海洋地质与第四纪地质2017，Vol.37Issue(6)：128-139,12.DOI:10.16562/j.cnki.0256-1492.2017.06.014
海南岛西南海域晚第四纪古水深反演
THE INVERSION OF LATE QUATERNARY PALEO-WATER DEPTH IN SOUTHWESTERN OFFSHORE HAINAN ISLAND
摘要
Abstract
There are several cycles of coastal line migration and water-land inversion in the northwestern South China Sea due to climate and sea level changes during late Quaternary.Seven seismic reflectors have been recognized and dated based on high resolution seismic profiles and drilling cores.The inversion of late Quaternary (100.1～40.7 kaBP) paleo-water depth and coastal line have been build based on modern water depth,global sea level change curves and thickness of sediment in the study area.The inversion results indicate that part of the coastal line in western,northwestern and southern Hainan Island migrated seawards 100.1 kaBP.The water depth was larger than 550 m with a narrow shelf in the study area then.The shelf area became larger with a flat sea floor at 78.1 kaBP.The western coastal line migrate to sea in large scale with more land area exposed.The water depth was less than 200m.Factors suggest that the paleo-water depth and coastal line was controlled by climate,sea level changes and sediment supply.关键词
古水深/反演/海平面变化/晚第四纪/海南岛Key words
Hainan Island/Late Quaternary/paleo-water depth/inversion/sea level change分类
海洋科学引用本文复制引用
陈泓君,黄文凯,邱燕..海南岛西南海域晚第四纪古水深反演[J].海洋地质与第四纪地质,2017,37(6):128-139,12.基金项目
中国地质调查局项目(1212010611302,GZH201500207) （1212010611302,GZH201500207）
