(Table S1) Tie-points used in age model construction for ODP Leg 172 sites ...

ix Ocean Drilling Program (ODP) sites, in the Northwest Atlantic have been used to investigate kinematic and chemical changes in the "Western Boundary Undercurrent" (WBUC) during the development of full glacial conditions across the Marine Isotope Stage 5a/4 boundary (~70,000 years ago). S...

Full description

Bibliographic Details
Main Authors: Thornalley, David J R, Barker, Stephen, Becker, Julia, Hall, Ian R, Knorr, Gregor
Format: Dataset
Language:English
Published: PANGAEA 2013
Subjects:
Event label
Latitude of event
Longitude of event
Elevation of event
DEPTH, sediment/rock
Age model
Tie point
Composite Core
Leg172
Joides Resolution
Ocean Drilling Program ODP
Northwest Atlantic
Online Access:https://dx.doi.org/10.1594/pangaea.821830
https://doi.pangaea.de/10.1594/PANGAEA.821830
Description
Summary:ix Ocean Drilling Program (ODP) sites, in the Northwest Atlantic have been used to investigate kinematic and chemical changes in the "Western Boundary Undercurrent" (WBUC) during the development of full glacial conditions across the Marine Isotope Stage 5a/4 boundary (~70,000 years ago). Sortable silt mean grain size(sort s) measurements are employed to examine changes in near bottom flow speeds, together with carbon isotopes measured in benthic foraminifera and % planktic foraminiferal fragmentation as proxies for changes in water-mass chemistry. A depth transect of cores, spanning 1.8-4.6 km depth, allows changes in both the strength and depth of the WBUC to be constrained across millennial scale events. Sort s measurements reveal that the flow speed structure of the WBUC during warm intervals ("interstadials") was comparable to modern (Holocene) conditions. However, significant differences are observed during cold intervals, with higher relative flow speeds inferred for the shallow component of the WBUC ... : Supplement to: Thornalley, David J R; Barker, Stephen; Becker, Julia; Hall, Ian R; Knorr, Gregor (2013): Abrupt changes in deep Atlantic circulation during the transition to full glacial conditions. Paleoceanography, 28(2), 253-262 ...

Similar Items