Provenance of Heinrich layers in core V28-82, northeastern Atlantic: Ar-40/Ar-39 ages of ice-rafted hornblende, Pb isotopes in feldspar grains, and Nd-Sr-Pb isotopes in the fine sediment fraction

Publication Status is "Submitted" Or "In Press: 
LDEO Publication: 
Publication Type: 
Year of Publication: 
1998
Editor: 
Journal Title: 
Earth and Planetary Science Letters
Journal Date: 
Dec 15
Place Published: 
Tertiary Title: 
Volume: 
164
Issue: 
1-2
Pages: 
317-333
Section / Start page: 
Publisher: 
ISBN Number: 
0012-821X
ISSN Number: 
Edition: 
Short Title: 
Accession Number: 
ISI:000077815900024
LDEO Publication Number: 
Call Number: 
Abstract: 

Several correlatable layers of sediment, rich in ice rafted grains, have been documented in the North Atlantic. The most notable within the last glacial cycle are the Heinrich layers, layers extremely rich in ice rafted detritus and generally barren of foraminifera within the North Atlantic ice rafted detritus (IRD) belt. The view of these layers is that they represent events where great armadas of icebergs were launched into the North Atlantic. The importance of the Heinrich layers lies in their connection with abrupt climate change in the North Atlantic, and perhaps globally. There is a growing number of published provenance studies of the Heinrich layers in the North Atlantic, based on a variety of methods. However, there is little overlap of methods applied to the same samples. In this contribution, we present a multi-component provenance study of Heinrich layers H1, H2, H4 and H5 from core V28-82 in the eastern North Atlantic. Our results indicate that virtually the entire inventory of terrigenous elastic detritus in Heinrich layers H2, H4 and H5 came from ancient continental sources surrounding the Labrador Sea. Although Heinrich layer H1 is similar in many respects, it appears to have some significant differences relative to the other three. (C) 1998 Elsevier Science B.V. All rights reserved.

Notes: 

153CQTimes Cited:47Cited References Count:58

DOI: