Astronomical age models for Pleistocene drift sediments from the western North Atlantic (ODP sites 1055-1063)
Ten ODP sites drilled in a depth transect (2164-4775 m water depth) during Leg 172 recovered high-deposition rate (> 20 cm/kyr) sedimentary sections from sediment drifts in the western North Atlantic. For each site an age model covering the past 0.8-0.9 Ma has been developed. The time scales have...
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ftunivpadovairis:oai:www.research.unipd.it:11577/1364938 2023-09-05T13:21:24+02:00 Astronomical age models for Pleistocene drift sediments from the western North Atlantic (ODP sites 1055-1063) GRUETZNER J. GIOSAN L. FRANZ S. O. TIDEMAN R. CORTIJO E. CHAISSON W. P. FLOOD R. D. HAGEN S. KEIGWIN L. D. POLI MS WILLIAMS T. RIO, DOMENICO Gruetzner, J. Giosan, L. Franz, S. O. Tideman, R. Cortijo, E. Chaisson, W. P. Flood, R. D. Hagen, S. Keigwin, L. D. Poli, M Rio, Domenico Williams, T. 2002 STAMPA http://hdl.handle.net/11577/1364938 eng eng Elsevier Science Publishers B.V. volume:189 firstpage:5 lastpage:23 numberofpages:19 journal:MARINE GEOLOGY http://hdl.handle.net/11577/1364938 Astronomical chronology Drift sediment Ocean Drilling Program Pleistocene time scale Western North Atlantic info:eu-repo/semantics/article 2002 ftunivpadovairis 2023-08-21T20:10:42Z Ten ODP sites drilled in a depth transect (2164-4775 m water depth) during Leg 172 recovered high-deposition rate (> 20 cm/kyr) sedimentary sections from sediment drifts in the western North Atlantic. For each site an age model covering the past 0.8-0.9 Ma has been developed. The time scales have a resolution of 10-20 kyr and are derived by tuning variations of estimated carbonate content to the orbital parameters precession and obliquity. Based on the similarity in the signature of proxy records and the spectral character of the time series, the sites are divided into two groups: precession cycles are better developed in carbonate records from a group of shallow sites (2164-2975 m water depth, Sites 1055-1058) while the deeper sites (2995-4775 m water depth, Sites 1060-1063) are characterized by higher spectral density in the obliquity band. The resulting time scales show excellent coherence with other dated carbonate and isotope records from low latitudes. Besides the typical Milankovitch cyclicity significant variance of the resulting carbonate time series is concentrated at millennial-scale changes with periods of about 12, 6, 4, 2.5, and 1.5 kyr. Comparisons of carbonate records from the Blake Bahama Outer Ridge and the Bermuda Rise reveal a remarkable similarity in the time and frequency domain indicating a basin-wide uniform sedimentation pattern during the last 0.9 Ma. © 2002 Elsevier Science B.V. All rights reserved. Article in Journal/Newspaper North Atlantic Padua Research Archive (IRIS - Università degli Studi di Padova) |
institution |
Open Polar |
collection |
Padua Research Archive (IRIS - Università degli Studi di Padova) |
op_collection_id |
ftunivpadovairis |
language |
English |
topic |
Astronomical chronology Drift sediment Ocean Drilling Program Pleistocene time scale Western North Atlantic |
spellingShingle |
Astronomical chronology Drift sediment Ocean Drilling Program Pleistocene time scale Western North Atlantic GRUETZNER J. GIOSAN L. FRANZ S. O. TIDEMAN R. CORTIJO E. CHAISSON W. P. FLOOD R. D. HAGEN S. KEIGWIN L. D. POLI MS WILLIAMS T. RIO, DOMENICO Astronomical age models for Pleistocene drift sediments from the western North Atlantic (ODP sites 1055-1063) |
topic_facet |
Astronomical chronology Drift sediment Ocean Drilling Program Pleistocene time scale Western North Atlantic |
description |
Ten ODP sites drilled in a depth transect (2164-4775 m water depth) during Leg 172 recovered high-deposition rate (> 20 cm/kyr) sedimentary sections from sediment drifts in the western North Atlantic. For each site an age model covering the past 0.8-0.9 Ma has been developed. The time scales have a resolution of 10-20 kyr and are derived by tuning variations of estimated carbonate content to the orbital parameters precession and obliquity. Based on the similarity in the signature of proxy records and the spectral character of the time series, the sites are divided into two groups: precession cycles are better developed in carbonate records from a group of shallow sites (2164-2975 m water depth, Sites 1055-1058) while the deeper sites (2995-4775 m water depth, Sites 1060-1063) are characterized by higher spectral density in the obliquity band. The resulting time scales show excellent coherence with other dated carbonate and isotope records from low latitudes. Besides the typical Milankovitch cyclicity significant variance of the resulting carbonate time series is concentrated at millennial-scale changes with periods of about 12, 6, 4, 2.5, and 1.5 kyr. Comparisons of carbonate records from the Blake Bahama Outer Ridge and the Bermuda Rise reveal a remarkable similarity in the time and frequency domain indicating a basin-wide uniform sedimentation pattern during the last 0.9 Ma. © 2002 Elsevier Science B.V. All rights reserved. |
author2 |
Gruetzner, J. Giosan, L. Franz, S. O. Tideman, R. Cortijo, E. Chaisson, W. P. Flood, R. D. Hagen, S. Keigwin, L. D. Poli, M Rio, Domenico Williams, T. |
format |
Article in Journal/Newspaper |
author |
GRUETZNER J. GIOSAN L. FRANZ S. O. TIDEMAN R. CORTIJO E. CHAISSON W. P. FLOOD R. D. HAGEN S. KEIGWIN L. D. POLI MS WILLIAMS T. RIO, DOMENICO |
author_facet |
GRUETZNER J. GIOSAN L. FRANZ S. O. TIDEMAN R. CORTIJO E. CHAISSON W. P. FLOOD R. D. HAGEN S. KEIGWIN L. D. POLI MS WILLIAMS T. RIO, DOMENICO |
author_sort |
GRUETZNER J. |
title |
Astronomical age models for Pleistocene drift sediments from the western North Atlantic (ODP sites 1055-1063) |
title_short |
Astronomical age models for Pleistocene drift sediments from the western North Atlantic (ODP sites 1055-1063) |
title_full |
Astronomical age models for Pleistocene drift sediments from the western North Atlantic (ODP sites 1055-1063) |
title_fullStr |
Astronomical age models for Pleistocene drift sediments from the western North Atlantic (ODP sites 1055-1063) |
title_full_unstemmed |
Astronomical age models for Pleistocene drift sediments from the western North Atlantic (ODP sites 1055-1063) |
title_sort |
astronomical age models for pleistocene drift sediments from the western north atlantic (odp sites 1055-1063) |
publisher |
Elsevier Science Publishers B.V. |
publishDate |
2002 |
url |
http://hdl.handle.net/11577/1364938 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
volume:189 firstpage:5 lastpage:23 numberofpages:19 journal:MARINE GEOLOGY http://hdl.handle.net/11577/1364938 |
_version_ |
1776202011558019072 |