气候变化领域集成服务门户(CCPortal): Downcore rock-magnetic properties of ICDP Core 5045-1, Lake Ohrid

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.848639
	Downcore rock-magnetic properties of ICDP Core 5045-1, Lake Ohrid
	Just; Janna; Nowaczyk; Norbert R; Sagnotti; Leonardo; Francke; Alexander; Vogel; Hendrik; Lacey; Jack H; Wagner; Bernd
发布日期	2015-08-10
数据集类型	dataset
英文简介	The bulk magnetic mineral record from Lake Ohrid, spanning the past 637 kyr, reflects large-scale shifts in hydrological conditions, and, superimposed, a strong signal of environmental conditions on glacial–interglacial and millennial timescales. A shift in the formation of early diagenetic ferrimagnetic iron sulfides to siderites is observed around 320 ka. This change is probably associated with variable availability of sulfide in the pore water. We propose that sulfate concentrations were significantly higher before ~320 ka, due to either a higher sulfate flux or lower dilution of lake sulfate due to a smaller water volume. Diagenetic iron minerals appear more abundant during glacials, which are generally characterized by higher Fe/Ca ratios in the sediments.
空间范围	Latitude: 41.049170 * Longitude: 20.715000
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/216983
推荐引用方式 GB/T 7714	Just,Janna,Nowaczyk,et al. Downcore rock-magnetic properties of ICDP Core 5045-1, Lake Ohrid.2015-08-10.https://doi.org/10.1594/PANGAEA.848639.