作　　者： ; ; ; ; ; (陈欣树）;

机构地区： 中国科学院南海海洋研究所

出　　处： 《海洋与湖沼》 1996年第3期264-270,共7页

摘　　要： 于1990年5－6月在永暑礁礁坪上打一全采芯的地质研究钻井，编号为南永1井，总进尺为15207m，对岩芯详细的地质年代学、地层学、相学和岩石学等进行多学科的分析研究。结果表明，永暑礁地区的海平面目早更新世晚期以来经历了4次上升和间隔的3次下降，形成了4个沉积旋回及其间的3个沉积间断。海平面呈波动式上升趋势。 During May and June, 1990, a geological research core at Yongshu Reefflat named core Nanyong-1 (152.07m deep) was drilled. According to the detailedand multidisciplinary data of geochronology, stratigraphy, facies and petrology ofcore Nanyong- 1, the changillg curve of sea-level of Yongshu areas since 900000years B.P. was drewed. Analytical result showed that the sealevel had 4 rises and 3falls intermediately since late stage of Early Pleistocene, and formed 4 sedimentarycycles and 3 sedimentary interruPted surfaees. Generally, the sea-level rose fluctuatedly.

关 键 词： 南沙群岛 永暑礁 海平面变化 古气候

领　　域： [天文地球]