登录 | 注册 | 中文  | English  | 用时: 0.55s
元数据
高级检索
首页 > 中国极地考察知识库 > 成果信息库 > 已审查 Late Quaternary ice-rafted detritus events in the Chukchi Basin, western Arctic Ocean

Late Quaternary ice-rafted detritus events in the Chukchi Basin, western Arctic Ocean

【标题】Late Quaternary ice-rafted detritus events in the Chukchi Basin, western Arctic Ocean

【Title】Late Quaternary ice-rafted detritus events in the Chukchi Basin, western Arctic Ocean

【作者】 王汝建; 肖文申; 孙烨忱

【Author】 Wang Rujian ; Xiao Wenshen ; Sun Yechen

【期刊】科学通报(英文版)

【Journal】Chinese Science Bulletin

【期刊年份】2010

【卷】55

【期】4-5

【关键词】 RD events; Beaufort Gyre; North American ice sheet; late Quaternary; Chukchi Basin

【Keywords】 RD events; Beaufort Gyre; North American ice sheet; late Quaternary; Chukchi Basin

【摘要】

【Abstract】The late Quaternary ice rafted detritus (IRD) events in the Chukchi Basin, western Arctic Ocean are indications of the provenance of the coarser detritus and ice export events, and also document the evolutionary histories of Beaufort Gyre and the North American Ice Sheet (NAIS). The sediment of core M03 from the Chukchi Basin was selected to study the regional response to the ice export events and the NAIS variability. The stratigraphic framework of M03 was established by a combination of lithological features and downcore color change cycles, AMS14C dating with foraminifera abundance and IRD events. The core was also compared with the adjacent core NWR 5 from the Northwind Ridge area. The core extends back to Marine Isotope Stage (MIS) 7. A sedimentary hiatus of 10―20 ka might occur between 16 to 20 cm core depth. Seven IRD events are distinguished from the studied core and are presented during the early MIS 1, MIS 3, MIS 5 and late MIS 7. These IRD are transported by sea ice and icebergs, which were exported to the Beaufort Sea from the M’Clure Strait Ice Stream, Canadian Arctic Archipelago, and brought to the Chukchi Basin by the Beaufort Gyre.

【基金/项目】 中国第二次北极考察 ; 国家重点基础研究发展规划项目(G2007CB815903) ; 西太平洋暖池与东亚古环境:沉积记录的海陆对比 ; 晚第四纪冰期旋回中北冰洋的古海洋与古气候记录 ; 国际极地年(IPY)中国南、北极行动方案研究

【下载】