Palaeoenvironmental conditions for the preservation of organic matter during the late Hauterivian in the Neuquén Basin (Western Argentina)

dc.creatorOmarini Fernández, Julieta
dc.creatorLescano, Marina
dc.creatorOdino Barreto, Andrea Lorena
dc.creatorCampetella, Débora Mical
dc.creatorTunik, Maísa Andrea
dc.creatorGarbán, Grony
dc.creatorBrea, Fabián
dc.creatorErra, Georgina
dc.creatorAguirre Urreta, Beatriz
dc.creatorMartinez, Mathieu
dc.date2020
dc.date.accessioned2023-08-30T16:40:06Z
dc.date.available2023-08-30T16:40:06Z
dc.identifierOmarini, J., Lescano, M. Odino-Barreto, A., Campetella, D., Tunik, M., Garbán, G., Brea, F., Erra, G., Aguirre-Urreta, B., Martinez, M., (2020). Palaeoenvironmental conditions for the preservation of organic matter during the late Hauterivian in the Neuquén Basin (Western Argentina). Marine and Petroleum Geology; 120; 104469.
dc.identifier0264-8172
dc.identifierhttps://www.sciencedirect.com/science/article/pii/S026481722030252X?via%3Dihub
dc.identifierhttp://rid.unrn.edu.ar/handle/20.500.12049/5637
dc.identifierhttps://doi.org/10.1016/j.marpetgeo.2020.104469
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8534798
dc.descriptionFil: Omarini, Julieta. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina.
dc.descriptionFil: Lescano, Marina. Instituto de Estudios Andinos Don Pablo Groeber (CONICET-UBA); Argentina.
dc.descriptionFil: Odino Barreto, Andrea Lorena. Centro de Investigaciones Geológicas (CONICET-UNLP); Argentina.
dc.descriptionFil: Campetella, Débora. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina.
dc.descriptionFil: Tunik, Maísa. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina.
dc.descriptionFil: Garbán, Grony. Centro de Investigaciones Geológicas (CONICET-UNLP), DTP Laboratorios SRL; Argentina.
dc.descriptionFil: Brea, Fabián. Y-TEC (YPF Tecnología); Argentina.
dc.descriptionFil: Erra, Georgina. Y-TEC (YPF Tecnología); Argentina.
dc.descriptionFil: Aguirre Urreta, Beatriz. Instituto de Estudios Andinos Don Pablo Groeber (CONICET-UBA); Argentina.
dc.descriptionFil: Martinez, Mathieu. Univ Rennes, CNRS, Géosciences Rennes - UMR 6118; Francia.
dc.descriptionThe Agua de la Mula Member of the Agrio Formation, comprises marine deposits accumulated in a mixed carbonate-siliciclastic outer ramp during the late Hauterivian. An innovative multi-proxy study that includes sedimentological, geochemical and paleobiological data from the El Portón section were combined in order to constrain the environmental context. Two major sedimentary cycles have been recognised (TST-HST) reflecting the position of both distal and proximal sediments within the depositional system. The distal outer ramp deposits (FA1) are predominantly characterised by carbonate-bearing mudstones, with TOC content up to 4.43 wt% TOC (average 1.62 wt%) and Type II marine-derived amorphous organic matter. The high TOC could be reflecting enhanced bioproductivity during periods of decreased salinity as mirrored by peaks of Micrantholithus, and reduced dilution by siliciclastic material in a distal setting. Conversely, the proximal outer ramp succession (FA2) shows a higher siliciclastic pattern, along with the terrestrial organic matter signal (Type II-III kerogen) and TOC content around 1 wt%(average 1.05 wt%). In this interval primary production is associated with more stable conditions and stratified water, as reflected in peaks of Nannoconus. These conditions allowed a greater diversity and high abundances of calcareous nannofossil assemblages.
dc.descriptiontrue
dc.description-
dc.formatapplication/pdf
dc.languageen
dc.publisherElsevier Science
dc.relation120
dc.relationMarine and Petroleum Geology
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/4.0/
dc.subjectCiencias Exactas y Naturales
dc.subjectOrganic Geochemistry
dc.subjectTotal Organic Carbon (TOC)
dc.subjectPalaeoproductivity
dc.subjectPalaeoceanographic Changes
dc.subjectAgua de la Mula Member
dc.subjectAgrio Formation
dc.subjectCretaceous
dc.subjectCiencias Exactas y Naturales
dc.titlePalaeoenvironmental conditions for the preservation of organic matter during the late Hauterivian in the Neuquén Basin (Western Argentina)


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