Sub-Milankovitch cycles in periplatform carbonates from the early Pliocene Great Bahama Bank
High-resolution bulk sediment (magnetic susceptibility and aragonite content) and δ18O records from two different planktonic foraminifera species were analyzed in an early Pliocene core interval from the Straits of Florida (Ocean Drilling Program site 1006). The δ18O record of the shallow-dwelling f...
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Language: | English |
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AGU (American Geophysical Union)
2006
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Online Access: | https://oceanrep.geomar.de/id/eprint/600/ https://oceanrep.geomar.de/id/eprint/600/1/palo1189.pdf https://doi.org/10.1029/2004PA001075 |
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ftoceanrep:oai:oceanrep.geomar.de:600 2023-05-15T18:00:46+02:00 Sub-Milankovitch cycles in periplatform carbonates from the early Pliocene Great Bahama Bank Reuning, Lars Reijmer, John Betzler, C. Timmermann, A. Steph, Silke 2006 text https://oceanrep.geomar.de/id/eprint/600/ https://oceanrep.geomar.de/id/eprint/600/1/palo1189.pdf https://doi.org/10.1029/2004PA001075 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/600/1/palo1189.pdf Reuning, L., Reijmer, J., Betzler, C., Timmermann, A. and Steph, S. (2006) Sub-Milankovitch cycles in periplatform carbonates from the early Pliocene Great Bahama Bank. Open Access Paleoceanography, 21 (PA1017). DOI 10.1029/2004PA001075 <https://doi.org/10.1029/2004PA001075>. doi:10.1029/2004PA001075 info:eu-repo/semantics/openAccess Article PeerReviewed 2006 ftoceanrep https://doi.org/10.1029/2004PA001075 2023-04-07T14:42:18Z High-resolution bulk sediment (magnetic susceptibility and aragonite content) and δ18O records from two different planktonic foraminifera species were analyzed in an early Pliocene core interval from the Straits of Florida (Ocean Drilling Program site 1006). The δ18O record of the shallow-dwelling foraminifera G. sacculifer and the aragonite content are dominated by sub-Milankovitch variability. In contrast, magnetic susceptibility and the δ18O record of the deeper-dwelling foraminifera G. menardii show precession cycles. The relationship between the aragonite and the paleoproxy data suggests that the export of sediment from the adjacent Great Bahama Bank was triggered directly by atmospheric processes rather than by sea level change. We propose a climate mechanism that bears similarities with the semiannual cycle component of eastern equatorial Pacific sea surface temperatures under present-day conditions. Article in Journal/Newspaper Planktonic foraminifera OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Pacific Paleoceanography 21 1 n/a n/a |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
High-resolution bulk sediment (magnetic susceptibility and aragonite content) and δ18O records from two different planktonic foraminifera species were analyzed in an early Pliocene core interval from the Straits of Florida (Ocean Drilling Program site 1006). The δ18O record of the shallow-dwelling foraminifera G. sacculifer and the aragonite content are dominated by sub-Milankovitch variability. In contrast, magnetic susceptibility and the δ18O record of the deeper-dwelling foraminifera G. menardii show precession cycles. The relationship between the aragonite and the paleoproxy data suggests that the export of sediment from the adjacent Great Bahama Bank was triggered directly by atmospheric processes rather than by sea level change. We propose a climate mechanism that bears similarities with the semiannual cycle component of eastern equatorial Pacific sea surface temperatures under present-day conditions. |
format |
Article in Journal/Newspaper |
author |
Reuning, Lars Reijmer, John Betzler, C. Timmermann, A. Steph, Silke |
spellingShingle |
Reuning, Lars Reijmer, John Betzler, C. Timmermann, A. Steph, Silke Sub-Milankovitch cycles in periplatform carbonates from the early Pliocene Great Bahama Bank |
author_facet |
Reuning, Lars Reijmer, John Betzler, C. Timmermann, A. Steph, Silke |
author_sort |
Reuning, Lars |
title |
Sub-Milankovitch cycles in periplatform carbonates from the early Pliocene Great Bahama Bank |
title_short |
Sub-Milankovitch cycles in periplatform carbonates from the early Pliocene Great Bahama Bank |
title_full |
Sub-Milankovitch cycles in periplatform carbonates from the early Pliocene Great Bahama Bank |
title_fullStr |
Sub-Milankovitch cycles in periplatform carbonates from the early Pliocene Great Bahama Bank |
title_full_unstemmed |
Sub-Milankovitch cycles in periplatform carbonates from the early Pliocene Great Bahama Bank |
title_sort |
sub-milankovitch cycles in periplatform carbonates from the early pliocene great bahama bank |
publisher |
AGU (American Geophysical Union) |
publishDate |
2006 |
url |
https://oceanrep.geomar.de/id/eprint/600/ https://oceanrep.geomar.de/id/eprint/600/1/palo1189.pdf https://doi.org/10.1029/2004PA001075 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
https://oceanrep.geomar.de/id/eprint/600/1/palo1189.pdf Reuning, L., Reijmer, J., Betzler, C., Timmermann, A. and Steph, S. (2006) Sub-Milankovitch cycles in periplatform carbonates from the early Pliocene Great Bahama Bank. Open Access Paleoceanography, 21 (PA1017). DOI 10.1029/2004PA001075 <https://doi.org/10.1029/2004PA001075>. doi:10.1029/2004PA001075 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2004PA001075 |
container_title |
Paleoceanography |
container_volume |
21 |
container_issue |
1 |
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n/a |
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n/a |
_version_ |
1766169997147635712 |