Organic matter analyses (Rock-Eval 6 and LECO) of samples collected in cores and sediment traps of the Mozambique Channel during the PAMELA project
The purpose of this publication is to give access to the analytic data set which has been used in a paper submitted to the journal Marine Geology (Torelli et al., submitted). This paper proposes a general study of the organic matter (OM) distribution within the recent Quaternary sediments of the Mozambique Channel (southern part of the east African margins). The study was conducted in the framework of the PAMELA (PAssive Margin Exploration LAboratory) research project (Bourillet et al., 2013). This study is mainly based on Rock-Eval 6 (RE6) analyses of samples collected during several marine surveys: Pamela-Moz01 (Olu, 2014), Pamela-Moz04 (Jouet and Deville, 2015) and Pamela-Moz08 (Khripounoff, 2016; Fig. 1). 394 RE6 analyses were performed on samples collected with the Küllenberg corer (recovered core length up to 12 m) of the R/V Atalante (Pamela-Moz01 survey) and the Calypso corer (recovered core length up to 33 m) of the R/V Pourquoi Pas? (Pamela-Moz04 survey), 11 RE6 analyses on samples collected with an interface multicorer (30-40 cm maximum penetration), and 101 RE6 analyses on samples collected with sediment traps in moorings located 47 m above seabed. We provide here the whole RE6 analyses (Table 1) and the correlation made between RE6 analyses and LECO elemental analyses concerning the total carbon (Tables 2 and 3). The analysis of samples collected with particle traps within the deep-water areas of the Mozambique Basin has shown that the OM is transported by turbidite and/or contour currents and deposited while preserving Total Organic Carbon (TOC) contents between 1.5 and 3%Wt. However, the sedimentary OM is largely oxidized (Oxygen Index > 300 mg CO2/g TOC) and only a small amount of TOC (< 0.5%Wt) is preserved within the recent sediments of the distal area of the Zambezi turbidite system at water depths below 2500 m. Interface sediments sampled to a maximum depth of 40 cm, have shown intermediate TOC values between those collected in the particle traps and those from piston cores suggesting that the degradation of the OM is mainly active at the water-sediment interface. This OM oxidation and degradation process in the deep-water domains of the Mozambique Basin is probably due to the conjugate effects of low sediment accumulation rate and high permeability of the coarse-grained sediments but also to important bottom currents that promote the remobilization and the rearrangement of fine grained sediments. References Bourillet, J.F., Ferry, J.N., Bourges, P., 2013. PAMELA, Passive Margins Exploration Laboratories. https://dx.doi.org/10.18142/236. Jouet, G., Deville, E., 2015. PAMELA-MOZ04 cruise, R/V Pourquoi Pas? https://doi.org/10.17600/15000700. Khripounoff, A., 2017. PAMELA-MOZ08 cruise, R/V Antea. https://doi.org/10.17600/17003900. Olu, K, 2014. PAMELA-MOZ01 cruise, R/V L'Atalante, https://dx.doi.org/10.17600/14001000. Torelli, M., Battani, A., Pillot, D., Kohler, E., Lopes De Azevedo, J., Kowalewski, I., Pastor, L., Brandily, C., Schmidt, S., Jouet, G., Deville, E. (Submitted to Marine Geology). Organic matter distribution in modern sediments of the Mozambique Channel: Evidence for widespread oxidation processes in the deep-water domains.
Important Note: This submission has been initially submitted to SEA
scieNtific Open data Edition (SEANOE) publication service and received the recorded DOI.
The metadata elements have been further processed (refined) in EMODnet
Ingestion Service in order to conform with the Data Submission Service
specifications.
Identificatie
Versiedatum | 2020-11-12 |
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Type versiedatum | Creatie: Aanmaakdatum of opnamedatum van de dataset. |
Versiedatum | 2021-03-18 |
Type versiedatum | Wijziging: Datum van wijziging, controle, verbetering van dataset. |
Versiedatum | 2023-04-16 |
Type versiedatum | Publicatie: Uitgavedatum van de dataset. |
Type versiedatum | Publicatie: Uitgavedatum van de dataset. |
Dataset identificator | a53ad03f-3736-7363-3639-000000076982 |
Dataset identificator |
Inhoud
Contactgegevens dataset(serie)
Organisatie | SEA scieNtific Open data Edition |
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Adres | By address: IFREMER / IDM / SISMER - Scientific Information Systems for the SEA, IFREMER Centre de Bretagne, ZI Pointe du diable CS 10070 |
Plaats | PLOUZANE |
Postcode | 29280 |
Land | France |
data@seanoe.org | |
Connectiepunt URL | https://www.seanoe.org/ |
Rol | Publisher: Publisher |
Contactgegevens dataset(serie)
Organisatie | Ifremer, Scientific Information Systems for the sea |
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Adres | IFREMER Centre de Bretagne ZI Pointe du diable CS 10070 |
Plaats | PLOUZANE |
Postcode | 29280 |
Land | France |
sismer@ifremer.fr | |
Connectiepunt URL | http://data.ifremer.fr/SISMER |
Rol | Dataset Holding Organisation: Dataset Holding Organisation |
Contactgegevens dataset(serie)
Organisatie | Ifremer, Scientific Information Systems for the sea |
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Adres | IFREMER Centre de Bretagne ZI Pointe du diable CS 10070 |
Plaats | PLOUZANE |
Postcode | 29280 |
Land | France |
sismer@ifremer.fr | |
Connectiepunt URL | http://data.ifremer.fr/SISMER |
Rol | Auteur: Partij die auteur is van de data. |
Trefwoorden
GEMET - INSPIRE themes, version 1.0 | Oceanographic geographical features |
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SeaVoX salt and fresh water body gazetteer |
Indian Ocean
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SeaDataNet Agreed Parameter Groups | inapplicable |
SeaDataNet device categories | unconsolidated sediment corers |
SeaDataNet Parameter Discovery Vocabulary |
Carbon concentrations in sediment
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CRUISE SUMMARY REPORT INVENTORY (CSR) |
486_14001000
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SeaVoX Platform Categories | research vessel |
MEDIN data format categories | Documents |
Karakterset | UTF-8: 8-bit variabele grootte universele karakterset, gebaseerd op ISO/IEC 10646 |
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Categorie(ën) |
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Referentiesysteem
Horizontaal en/of verticaal referentiesysteem
Naam | WGS 1984 |
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Kwaliteit
Niveau kwaliteitsinformatie | Dataset: Informatie heeft betrekking op de dataset. |
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Bewerkingen
Algemene beschrijving herkomst | Raw data |
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Conformiteit
Domeinconsistentie
Resultaat
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Domeinconsistentie
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Domeinconsistentie
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Toegangs- en gebruiksbeperkingen
Legale en veiligheidsbeperkingen
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Distributie
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Meta-metadata
Metadata identificator (fileIdentifier) | a53ad03f-3736-7363-3639-000000076982 | ||||||||||||||
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Taal metadatarecord | Engels | ||||||||||||||
Karakterset metadatarecord | UTF-8: 8-bit variabele grootte universele karakterset, gebaseerd op ISO/IEC 10646 | ||||||||||||||
Hiërarchisch niveau | Dataset: Informatie heeft betrekking op de dataset. | ||||||||||||||
Metadata wijzigingsdatum | 2024-10-01T00:00:00 | ||||||||||||||
Naam metadatastandaard | ISO 19115:2003/19139 | ||||||||||||||
Versie metadatastandaard | 1.0 | ||||||||||||||
Metadata-auteur
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