ODP 的第119航次研究了南印度洋的古海洋学史,凯尔盖朗海台的地质发展和东南极冰川的起始与发展。JOIDES“决心者”号钻探船于1987年12月8日驶离毛里求斯的路易斯港,对南印度洋的克尔盖伦海台和对南极东部普里长海湾进行了66天的调查。这次调查共开凿了六个钻孔(736～738,744～746)分别位于凯尔盖朗海台的北面和南面,从北面两个(736—737)钻遇的沉积物是中始新世到早中新世的钙质粘土岩,其上覆盖着中中新世到第四纪的硅藻和钙质软泥组成。在地震剖面上可清楚判读出这些沉积层序之间的突然转变,因此可知其间一个约有8百万 The 119th Voyage of the ODP studied the history of paleoceanography in the South Indian Ocean, the geological development of the Kelghera Haitai, and the onset and development of the East Antarctic Glacier. The JOIDES Drilling Vessel departed Port Louis, Mauritius, on 8 December 1987 and conducted a 66-day survey of the Kalkelä Sea Terrace in the South Indian Ocean and Puri Long Bay in the eastern Antarctica. A total of six boreholes (736-738 and 744-746) were found in the survey to the north and south of the Kelgulang platform. The sediments from the two northern (736-737) encounters were Miocene Early Miocene calcareous clay rock, which is covered by the Miocene to Quaternary diatoms and calcareous slime composition. The sudden transition between these sedimentary sequences can clearly be read on the seismic profile, so we can see that there is about 8 million