Late Cretaceous and Cenozoic paleoceanography from north-east Atlantic ferromanganese crust microstratigraphy
Oceanic hydrogenetic ferromanganese (Fe-Mn) crusts precipitate directly from ambient seawater over millions of years. Their very slow growth rates and physio-chemical properties mean that they adsorb numerous elements from seawater. As such, they provide condensed records of seawater evolution throu...
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ftsouthampton:oai:eprints.soton.ac.uk:438059 2023-07-30T04:05:41+02:00 Late Cretaceous and Cenozoic paleoceanography from north-east Atlantic ferromanganese crust microstratigraphy Josso, Pierre Rushton, Jeremy Lusty, Paul Matthews, Adam Chenery, Simon Holwell, David Kemp, Simon J. Murton, Bramley 2020-04-01 text https://eprints.soton.ac.uk/438059/ https://eprints.soton.ac.uk/438059/1/_Jossso.pdf en English eng https://eprints.soton.ac.uk/438059/1/_Jossso.pdf Josso, Pierre, Rushton, Jeremy, Lusty, Paul, Matthews, Adam, Chenery, Simon, Holwell, David, Kemp, Simon J. and Murton, Bramley (2020) Late Cretaceous and Cenozoic paleoceanography from north-east Atlantic ferromanganese crust microstratigraphy. Marine Geology, 422, [106122]. (doi:10.1016/j.margeo.2020.106122 <http://dx.doi.org/10.1016/j.margeo.2020.106122>). cc_by_4 Article PeerReviewed 2020 ftsouthampton https://doi.org/10.1016/j.margeo.2020.106122 2023-07-09T22:34:41Z Oceanic hydrogenetic ferromanganese (Fe-Mn) crusts precipitate directly from ambient seawater over millions of years. Their very slow growth rates and physio-chemical properties mean that they adsorb numerous elements from seawater. As such, they provide condensed records of seawater evolution through time that can be used for paleoceanographic reconstruction. Here, we present the results of a high-resolution, stratigraphic, textural and geochemical investigation of a core sample, obtained from a Fe-Mn crust pavement, located on the summit of Tropic Seamount in the tropical north-east Atlantic Ocean. A number of observations and interpretations are proposed, within the context of a well-constrained age model, spanning the last 75 ± 2 Myr. This core has textural stratigraphic coherence with Pacific Fe-Mn crusts formed since the Late Cretaceous, highlighting that global oceanic and climatic phenomena exert first-order controls on Fe-Mn crust development. All major hiatuses observed in the Fe-Mn crusts are contemporaneous with erosion events occurring throughout the Atlantic Ocean. High-resolution geochemical data indicate that there is variability in the composition of Fe-Mn crusts at the cm to μm scale. The dominant factors controlling this include major oceanographic events, mineral textures and micro-topography. Article in Journal/Newspaper North East Atlantic University of Southampton: e-Prints Soton Pacific Marine Geology 422 106122 |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
Oceanic hydrogenetic ferromanganese (Fe-Mn) crusts precipitate directly from ambient seawater over millions of years. Their very slow growth rates and physio-chemical properties mean that they adsorb numerous elements from seawater. As such, they provide condensed records of seawater evolution through time that can be used for paleoceanographic reconstruction. Here, we present the results of a high-resolution, stratigraphic, textural and geochemical investigation of a core sample, obtained from a Fe-Mn crust pavement, located on the summit of Tropic Seamount in the tropical north-east Atlantic Ocean. A number of observations and interpretations are proposed, within the context of a well-constrained age model, spanning the last 75 ± 2 Myr. This core has textural stratigraphic coherence with Pacific Fe-Mn crusts formed since the Late Cretaceous, highlighting that global oceanic and climatic phenomena exert first-order controls on Fe-Mn crust development. All major hiatuses observed in the Fe-Mn crusts are contemporaneous with erosion events occurring throughout the Atlantic Ocean. High-resolution geochemical data indicate that there is variability in the composition of Fe-Mn crusts at the cm to μm scale. The dominant factors controlling this include major oceanographic events, mineral textures and micro-topography. |
format |
Article in Journal/Newspaper |
author |
Josso, Pierre Rushton, Jeremy Lusty, Paul Matthews, Adam Chenery, Simon Holwell, David Kemp, Simon J. Murton, Bramley |
spellingShingle |
Josso, Pierre Rushton, Jeremy Lusty, Paul Matthews, Adam Chenery, Simon Holwell, David Kemp, Simon J. Murton, Bramley Late Cretaceous and Cenozoic paleoceanography from north-east Atlantic ferromanganese crust microstratigraphy |
author_facet |
Josso, Pierre Rushton, Jeremy Lusty, Paul Matthews, Adam Chenery, Simon Holwell, David Kemp, Simon J. Murton, Bramley |
author_sort |
Josso, Pierre |
title |
Late Cretaceous and Cenozoic paleoceanography from north-east Atlantic ferromanganese crust microstratigraphy |
title_short |
Late Cretaceous and Cenozoic paleoceanography from north-east Atlantic ferromanganese crust microstratigraphy |
title_full |
Late Cretaceous and Cenozoic paleoceanography from north-east Atlantic ferromanganese crust microstratigraphy |
title_fullStr |
Late Cretaceous and Cenozoic paleoceanography from north-east Atlantic ferromanganese crust microstratigraphy |
title_full_unstemmed |
Late Cretaceous and Cenozoic paleoceanography from north-east Atlantic ferromanganese crust microstratigraphy |
title_sort |
late cretaceous and cenozoic paleoceanography from north-east atlantic ferromanganese crust microstratigraphy |
publishDate |
2020 |
url |
https://eprints.soton.ac.uk/438059/ https://eprints.soton.ac.uk/438059/1/_Jossso.pdf |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_relation |
https://eprints.soton.ac.uk/438059/1/_Jossso.pdf Josso, Pierre, Rushton, Jeremy, Lusty, Paul, Matthews, Adam, Chenery, Simon, Holwell, David, Kemp, Simon J. and Murton, Bramley (2020) Late Cretaceous and Cenozoic paleoceanography from north-east Atlantic ferromanganese crust microstratigraphy. Marine Geology, 422, [106122]. (doi:10.1016/j.margeo.2020.106122 <http://dx.doi.org/10.1016/j.margeo.2020.106122>). |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.1016/j.margeo.2020.106122 |
container_title |
Marine Geology |
container_volume |
422 |
container_start_page |
106122 |
_version_ |
1772817776007708672 |