Nd, Pb, and Be isotopes of ferromanaganese crusts of the Atlantic Ocean
The isotopic composition of Nd in present-day deep waters of the central and northeastern Atlantic Ocean is thought to fingerprint mixing of North Atlantic Deep Water with Antarctic Bottom Water. The central Atlantic Romanche and Vema Fracture Zones are considered the most important pathways for dee...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.737631 2023-05-15T13:42:10+02:00 Nd, Pb, and Be isotopes of ferromanaganese crusts of the Atlantic Ocean Frank, Martin van de Flierdt, Tina Halliday, Alex N Kubik, Peter W Hattendorf, Bodo Günther, Detlef MEDIAN LATITUDE: 2.338494 * MEDIAN LONGITUDE: -28.992943 * SOUTH-BOUND LATITUDE: -1.225000 * WEST-BOUND LONGITUDE: -42.700000 * NORTH-BOUND LATITUDE: 10.583330 * EAST-BOUND LONGITUDE: -20.595000 * DATE/TIME START: 1977-11-01T00:00:00 * DATE/TIME END: 1977-11-01T00:00:00 2003-05-03 application/zip, 5 datasets https://doi.pangaea.de/10.1594/PANGAEA.737631 https://doi.org/10.1594/PANGAEA.737631 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.737631 https://doi.org/10.1594/PANGAEA.737631 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Frank, Martin; van de Flierdt, Tina; Halliday, Alex N; Kubik, Peter W; Hattendorf, Bodo; Günther, Detlef (2003): Evolution of deep water mixing and wathering inputs in the central Atlantic Ocean over the past 33 Myr. Paleoceanography, 18(4), 1091, https://doi.org/10.1029/2003PA000919 BIOVEMA-CH78 DR01-001a Dredge DRG G9632-47 G9646-63 Jean Charcot ROM16 ROM32 ROM46 ROM96 S1601-13 Vema VEMA-CH78 Dataset 2003 ftpangaea https://doi.org/10.1594/PANGAEA.737631 https://doi.org/10.1029/2003PA000919 2023-01-20T07:31:45Z The isotopic composition of Nd in present-day deep waters of the central and northeastern Atlantic Ocean is thought to fingerprint mixing of North Atlantic Deep Water with Antarctic Bottom Water. The central Atlantic Romanche and Vema Fracture Zones are considered the most important pathways for deep water exchange between the western and eastern Atlantic basins today. We present new Nd isotope records of the deepwater evolution in the fracture zones obtained from ferromanganese crusts, which are inconsistent with simple water mass mixing alone prior to 3 Ma and require additional inputs from other sources. The new Pb isotope time series from the fracture zones are inexplicable by simple mixing of North Atlantic Deep Water and Antarctic Bottom Water for the entire past 33 Myr. The distinct and relatively invariable Nd and Pb isotope records of deep waters in the fracture zones appear instead to have been controlled to a large extent by contributions from Saharan dust and the Orinoco/Amazon Rivers. Thus the previously observed similarity of Nd and Pb isotope time series from the western and eastern North Atlantic basins is better explainable by direct supply of Labrador Seawater to the eastern basin via a northern pathway rather than by advection of North Atlantic Deep Water via the Romanche and Vema Fracture Zones. Dataset Antarc* Antarctic North Atlantic Deep Water North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Charcot ENVELOPE(139.017,139.017,-69.367,-69.367) ENVELOPE(-42.700000,-20.595000,10.583330,-1.225000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
BIOVEMA-CH78 DR01-001a Dredge DRG G9632-47 G9646-63 Jean Charcot ROM16 ROM32 ROM46 ROM96 S1601-13 Vema VEMA-CH78 |
spellingShingle |
BIOVEMA-CH78 DR01-001a Dredge DRG G9632-47 G9646-63 Jean Charcot ROM16 ROM32 ROM46 ROM96 S1601-13 Vema VEMA-CH78 Frank, Martin van de Flierdt, Tina Halliday, Alex N Kubik, Peter W Hattendorf, Bodo Günther, Detlef Nd, Pb, and Be isotopes of ferromanaganese crusts of the Atlantic Ocean |
topic_facet |
BIOVEMA-CH78 DR01-001a Dredge DRG G9632-47 G9646-63 Jean Charcot ROM16 ROM32 ROM46 ROM96 S1601-13 Vema VEMA-CH78 |
description |
The isotopic composition of Nd in present-day deep waters of the central and northeastern Atlantic Ocean is thought to fingerprint mixing of North Atlantic Deep Water with Antarctic Bottom Water. The central Atlantic Romanche and Vema Fracture Zones are considered the most important pathways for deep water exchange between the western and eastern Atlantic basins today. We present new Nd isotope records of the deepwater evolution in the fracture zones obtained from ferromanganese crusts, which are inconsistent with simple water mass mixing alone prior to 3 Ma and require additional inputs from other sources. The new Pb isotope time series from the fracture zones are inexplicable by simple mixing of North Atlantic Deep Water and Antarctic Bottom Water for the entire past 33 Myr. The distinct and relatively invariable Nd and Pb isotope records of deep waters in the fracture zones appear instead to have been controlled to a large extent by contributions from Saharan dust and the Orinoco/Amazon Rivers. Thus the previously observed similarity of Nd and Pb isotope time series from the western and eastern North Atlantic basins is better explainable by direct supply of Labrador Seawater to the eastern basin via a northern pathway rather than by advection of North Atlantic Deep Water via the Romanche and Vema Fracture Zones. |
format |
Dataset |
author |
Frank, Martin van de Flierdt, Tina Halliday, Alex N Kubik, Peter W Hattendorf, Bodo Günther, Detlef |
author_facet |
Frank, Martin van de Flierdt, Tina Halliday, Alex N Kubik, Peter W Hattendorf, Bodo Günther, Detlef |
author_sort |
Frank, Martin |
title |
Nd, Pb, and Be isotopes of ferromanaganese crusts of the Atlantic Ocean |
title_short |
Nd, Pb, and Be isotopes of ferromanaganese crusts of the Atlantic Ocean |
title_full |
Nd, Pb, and Be isotopes of ferromanaganese crusts of the Atlantic Ocean |
title_fullStr |
Nd, Pb, and Be isotopes of ferromanaganese crusts of the Atlantic Ocean |
title_full_unstemmed |
Nd, Pb, and Be isotopes of ferromanaganese crusts of the Atlantic Ocean |
title_sort |
nd, pb, and be isotopes of ferromanaganese crusts of the atlantic ocean |
publisher |
PANGAEA |
publishDate |
2003 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.737631 https://doi.org/10.1594/PANGAEA.737631 |
op_coverage |
MEDIAN LATITUDE: 2.338494 * MEDIAN LONGITUDE: -28.992943 * SOUTH-BOUND LATITUDE: -1.225000 * WEST-BOUND LONGITUDE: -42.700000 * NORTH-BOUND LATITUDE: 10.583330 * EAST-BOUND LONGITUDE: -20.595000 * DATE/TIME START: 1977-11-01T00:00:00 * DATE/TIME END: 1977-11-01T00:00:00 |
long_lat |
ENVELOPE(139.017,139.017,-69.367,-69.367) ENVELOPE(-42.700000,-20.595000,10.583330,-1.225000) |
geographic |
Antarctic Charcot |
geographic_facet |
Antarctic Charcot |
genre |
Antarc* Antarctic North Atlantic Deep Water North Atlantic |
genre_facet |
Antarc* Antarctic North Atlantic Deep Water North Atlantic |
op_source |
Supplement to: Frank, Martin; van de Flierdt, Tina; Halliday, Alex N; Kubik, Peter W; Hattendorf, Bodo; Günther, Detlef (2003): Evolution of deep water mixing and wathering inputs in the central Atlantic Ocean over the past 33 Myr. Paleoceanography, 18(4), 1091, https://doi.org/10.1029/2003PA000919 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.737631 https://doi.org/10.1594/PANGAEA.737631 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.737631 https://doi.org/10.1029/2003PA000919 |
_version_ |
1766163777184595968 |