气候变化领域集成服务门户(CCPortal): Paleoceanographic changes across the Latest Danian Event in the South Atlantic Ocean and planktic foraminiferal response

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DOI	10.1016/j.palaeo.2019.03.024
	Paleoceanographic changes across the Latest Danian Event in the South Atlantic Ocean and planktic foraminiferal response
	Jehle S.; Bornemann A.; Lägel A.F.; Deprez A.; Speijer R.P.
发表日期	2019
ISSN	0031-0182
起始页码	1
结束页码	13
卷号	525
英文摘要	A number of short warming events occurred during Paleocene and Eocene, of which the “Paleocene-Eocene Thermal Maximum” (PETM, 56 Ma) is the most severe and most investigated event. The less known “Latest Danian Event” (LDE) at 62.2 Ma represents a 200 ky-lasting warming phase, superimposed on a long-term cooling trend after the Early Paleocene. South Atlantic ODP Site 1262 data, covering ~1 myr, indicate a warming of the entire water column by 1.5–2.6 °C, accompanying a prominent negative carbon isotope excursion (~0.9–1.1‰) and a long-term re-organization of the planktic foraminiferal fauna associated with the LDE. This study unravels a different paleoceanographic evolution of the upper ocean structure compared to results from Pacific ODP Site 1210. Unlike the Pacific, the Atlantic site lacks an apparent change of stratification as well as an overall dominance of thermocline dwelling planktic foraminifera species and a low abundance of surface dwelling photosymbiotic foraminifera. Within the LDE, indications for a slightly enhanced stratification of the upper water column and transient warming were indicated when surface dwelling planktic foraminifera became temporarily more abundant. The long-term evolution in planktic foraminifera with the disappearance of Praemurica at the LDE onset and a contemporaneous rise in Morozovella is similar to the trends reported from Shatsky Rise ODP Site 1210. © 2019
英文关键词	Hyperthermal event; Latest Danian Event; Negative CIE; Paleocene; Planktic foraminifera assemblage; Surface ocean stratification
语种	英语
scopus关键词	abundance; carbon isotope; cooling; Danian; hydrothermal vent; Ocean Drilling Program; paleoceanography; Paleocene; planktonic foraminifera; stratification; thermocline; upper ocean; water column; Atlantic Ocean; Atlantic Ocean (South); Pacific Ocean; Shatsky Rise; Foraminifera; Morozovella
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150964
作者单位	Institut für Geophysik und Geologie, Universität Leipzig, Germany; Bundesanstalt für Geowissenschaften und Rohstoffe, Hannover, Germany; Department of Earth and Environmental Sciences, KU Leuven, Belgium
推荐引用方式 GB/T 7714	Jehle S.,Bornemann A.,Lägel A.F.,et al. Paleoceanographic changes across the Latest Danian Event in the South Atlantic Ocean and planktic foraminiferal response[J],2019,525.
APA	Jehle S.,Bornemann A.,Lägel A.F.,Deprez A.,&Speijer R.P..(2019).Paleoceanographic changes across the Latest Danian Event in the South Atlantic Ocean and planktic foraminiferal response.Palaeogeography, Palaeoclimatology, Palaeoecology,525.
MLA	Jehle S.,et al."Paleoceanographic changes across the Latest Danian Event in the South Atlantic Ocean and planktic foraminiferal response".Palaeogeography, Palaeoclimatology, Palaeoecology 525(2019).