摘要
对南海北部陆坡17940孔晚更新世末期沉积物硅藻的研究表明,该时期硅藻组合以亚热带浮游性种类为主。硅藻组合中优势种和特征种含量的变化,指示了晚更新世末期南海海洋环境较现代封闭、海平面较现代为低的古地理环境。同时,根据硅藻组合中特征种的变化,也可以清楚地界定出波令—阿勒罗德期和新仙女木事件,但是全新世的底界并不明显。
Diatom study on core 17940 from the northern slope of the South China Sea （SCS） reveals that subtropical planktonic species are the most important components in the diatom assemblages during the latest Pleistocene. The changes in the diatom assemblages indicate that the SCS at that time was more closed and the sea level was lower than at present. Meanwhile, the Bolling-Allerod wet phase and the cold and dry Younger Dryas event were recorded based on changes in some characteristic species. However, the boundary between Younger Dryas and Holocene in diatom record is not clear.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
2006年第4期7-13,共7页
Marine Geology & Quaternary Geology
基金
国家自然科学基金项目(40276013)
关键词
硅藻
古地理环境
晚更新世末期
南海
diatom
paleoenvironment
the late Pleistocene
the South China Sea
