海洋地质与第四纪地质2012，Vol.32Issue(4)：157-163,7.DOI:10.3724/SP.J.1140.2012.04157
西菲律宾海15万年以来的浊流沉积及其成因
TURBIDITE DEPOSITION RECORD AND ITS MECHANISM SINCE 150 KABP IN WESTERN PHILIPPINE SEA
摘要
Abstract
Core MD06-3052 was taken from the continental slope off the Luzon Island in the western Philippine Sea. Multiple proxies such as AMS14C dating, sediment grain size and foraminiferal oxygen isotope were used to reveal the 5 turbidite events since 150 kaBP. The turbidites have coarser grain size than the normal layers, mostly composing of sand and silt. The occurrence time of the 5 turbidite events was calculated by AMS14C dating and oxygen isotope as 13. 3, 20. 4, 34. 3, 41. 7 and 121. 8 kaBP, separately, of which the latter 4 ones occurred in the low sealevel stages of the last glacial, especially in MIS 2-3, and the earliest one at the relatively low sealevel stage in MIS 5e, indicating that rapid sealevel oscillation during low sealevel stages was probably the main cause of the turbidite events. However, the steep slope may be a favorable topography for the sediment instabilities in Core MD06-3052.关键词
粒度/浊流沉积/氧同位素年代/西菲律宾海Key words
grain size/ turbidite deposition/ oxygen isotope age/ western Philippine Sea分类
海洋科学引用本文复制引用
仇晓华,李铁刚,常凤鸣,徐兆凯,宫海明,杨再宝..西菲律宾海15万年以来的浊流沉积及其成因[J].海洋地质与第四纪地质,2012,32(4):157-163,7.基金项目
国家自然科学基金项目(41076030,40906038,41106043) （41076030,40906038,41106043）
中国科学院知识创新工程项目(KZCX2-YW-221) （KZCX2-YW-221）
