气候变化领域集成服务门户(CCPortal): Distribution of lithic fragments and the planktic foraminifera Neogloboquadrina pachyderma in quaternary sediments of DSDP Hole 94-609 (Table 2)

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.667086
	Distribution of lithic fragments and the planktic foraminifera Neogloboquadrina pachyderma in quaternary sediments of DSDP Hole 94-609 (Table 2)
	Broecker; Wallace S; Bond; Gerard C; Klas; Mieczyslawa; Clark; Elizabeth; McManus; Jerry F
发布日期	1992-03-06
数据集类型	dataset
英文简介	As first noted by Heinrich, 1988, glacial age sediments in the eastern part of the northern Atlantic contain layers with unusually high ratios of ice-rafted lithic fragments to foraminifera shells. He estimated that these layers are spaced at intervals of roughly 10000 years. In this paper we present detailed information documenting the existence of the upper five of these layers in ODP core 609 from 50°N and 24 °W. Their ages are respectively 15000 radiocarbon years, 20000 radiocarbon years, 27000 radiocarbon years, about 40000 years, and about 50000 years. We also note that the high lithic fragment to foram ratio is the result of a near absence of shells in these layers. Although we are not of one mind regarding the origin of these layers, we lean toward an explanation that the Heinrich layers are debris released during the melting of massive influxes of icebergs into the northern Atlantic. These sudden inputs may be the result of surges along the eastern margin of the Laurentide ice sheet.
空间范围	Latitude: 49.877800 * Longitude: -24.238200
时间范围	1983-07-22T00:00:00 - 1983-07-22T00:00:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/232371
推荐引用方式 GB/T 7714	Broecker,Wallace S,Bond,et al. Distribution of lithic fragments and the planktic foraminifera Neogloboquadrina pachyderma in quaternary sediments of DSDP Hole 94-609 (Table 2).1992-03-06.https://doi.org/10.1594/PANGAEA.667086.