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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ftnerc:oai:nora.nerc.ac.uk:526771 2023-05-15T17:38:17+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 2020-01-18 text http://nora.nerc.ac.uk/id/eprint/526771/ https://nora.nerc.ac.uk/id/eprint/526771/1/__filestore.soton.ac.uk_users_elc1_mydesktop_OA_Downloads_Jossso.pdf https://doi.org/10.1016/j.margeo.2020.106122 en eng Elsevier https://nora.nerc.ac.uk/id/eprint/526771/1/__filestore.soton.ac.uk_users_elc1_mydesktop_OA_Downloads_Jossso.pdf Josso, Pierre; Rushton, Jeremy orcid:0000-0001-5931-7537 Lusty, Paul; Matthews, Adam; Chenery, Simon; Holwell, David; Kemp, Simon J. orcid:0000-0002-4604-0927 Murton, Bramley orcid:0000-0003-1522-1191 . 2020 Late Cretaceous and Cenozoic paleoceanography from north-east Atlantic ferromanganese crust microstratigraphy. Marine Geology, 422, 106122. https://doi.org/10.1016/j.margeo.2020.106122 <https://doi.org/10.1016/j.margeo.2020.106122> cc_by_4 CC-BY Publication - Article PeerReviewed 2020 ftnerc https://doi.org/10.1016/j.margeo.2020.106122 2023-02-04T19:50:09Z 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 Natural Environment Research Council: NERC Open Research Archive Pacific Marine Geology 422 106122 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
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 |
publisher |
Elsevier |
publishDate |
2020 |
url |
http://nora.nerc.ac.uk/id/eprint/526771/ https://nora.nerc.ac.uk/id/eprint/526771/1/__filestore.soton.ac.uk_users_elc1_mydesktop_OA_Downloads_Jossso.pdf https://doi.org/10.1016/j.margeo.2020.106122 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_relation |
https://nora.nerc.ac.uk/id/eprint/526771/1/__filestore.soton.ac.uk_users_elc1_mydesktop_OA_Downloads_Jossso.pdf Josso, Pierre; Rushton, Jeremy orcid:0000-0001-5931-7537 Lusty, Paul; Matthews, Adam; Chenery, Simon; Holwell, David; Kemp, Simon J. orcid:0000-0002-4604-0927 Murton, Bramley orcid:0000-0003-1522-1191 . 2020 Late Cretaceous and Cenozoic paleoceanography from north-east Atlantic ferromanganese crust microstratigraphy. Marine Geology, 422, 106122. https://doi.org/10.1016/j.margeo.2020.106122 <https://doi.org/10.1016/j.margeo.2020.106122> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1016/j.margeo.2020.106122 |
container_title |
Marine Geology |
container_volume |
422 |
container_start_page |
106122 |
_version_ |
1766138674407276544 |