Characterization of the Carnian Pluvial Episode in the Argana Basin (Western High Atlas, Morocco): An approach based on sedimentology, clay mineralogy and paleosols

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dc.contributor.authorTourani, A.
dc.contributor.authorBenaouiss, N
dc.contributor.authorHorra Del Barco, Raúl De La
dc.contributor.authorFernández Barrenechea, José María
dc.contributor.authorGallego, O. F.
dc.contributor.authorLópez Gómez, J.
dc.contributor.authorBourquin, S.
dc.date.accessioned2023-09-12T14:52:41Z
dc.date.available2023-09-12T14:52:41Z
dc.date.issued2023-10-01
dc.description.abstractWe report on a multi-proxy study of the Carnian Pluvial Episode in the continental Argana Basin (Morocco) based on mineralogy, geochemistry, paleosols and sedimentary features. The study focus on two sections of the Irohalene Member (unit t5) of the Timezgadiouine Formation dated as late Julian-early Tuvalian through clam shrimp (conchostracan) associations. The sedimentary study of the Irohalene Member defines three parts: lower, middle and upper (t5.1, t5.2, t5.3 respectively). The base of the lower part comprises channels with gravel and sandy bars related to proximal areas, and fluvial meandering systems, overbank and floodplain deposits developing upwards. Extensive floodplains showing the development of siliciclastic and carbonate lakes mostly represent the t5.2 and t5.3 parts, although the sedimentary characteristics of the former reflect more humid and permanent water conditions. These more humid characteristics are also indicated by the drastic change from calcareous paleosols in t5.1 to smectitic Vertisols in t5.2, which occur in relation to thin layers of lacustrine carbonates, greenish lutites, and hybrid oolitic sandstones of palustrine environments. Stable carbon and oxygen isotope data are consistent with a general tendency towards the arid conditions observed in the Tadart Ouadou t6 Member of the Bigoudine Formation, of fluvial-eolian origin and younger in age. This general tendency is interrupted by at least two humid yet hot intervals characterized by pedogenic carbonates featuring lighter isotope compositions and lacustrine carbonates precipitated under conditions of high temperatures and evaporation rates.
dc.description.departmentDepto. de Geodinámica, Estratigrafía y Paleontología
dc.description.departmentDepto. de Mineralogía y Petrología
dc.description.facultyFac. de Ciencias Geológicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Ciencia e Innovación y Universidades
dc.description.sponsorshipConsejo Nacional de Investigaciones Científicas y Técnicas
dc.description.statuspub
dc.identifier.doi10.1016/j.palaeo.2023.111720
dc.identifier.essn1872-616X
dc.identifier.issn0031-0182
dc.identifier.officialurlhttps://www.sciencedirect.com/science/article/pii/S0031018223003383?via%3Dihub
dc.identifier.urihttps://hdl.handle.net/20.500.14352/87708
dc.issue.number111720
dc.journal.titlePalaeogeography, Palaeoclimatology, Palaeoecology
dc.language.isoeng
dc.publisherElsevier
dc.relation.projectIDPGC2018-098272-B-100
dc.relation.projectIDPI18Q005
dc.relation.projectIDPIP-11220150100117CO
dc.rightsAttribution 4.0 Internationalen
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject.cdu551.761.3
dc.subject.keywordCPE
dc.subject.keywordArgana Basin
dc.subject.keywordLate Triassic
dc.subject.keywordCarnian
dc.subject.keywordMorocco
dc.subject.keywordCarnian Pluvial Episode
dc.subject.keywordClam shrimp
dc.subject.ucmGeología estratigráfica
dc.subject.unesco2506.19 Estratigrafía
dc.titleCharacterization of the Carnian Pluvial Episode in the Argana Basin (Western High Atlas, Morocco): An approach based on sedimentology, clay mineralogy and paleosols
dc.typejournal article
dc.type.hasVersionVoR
dc.volume.number627
dspace.entity.typePublication
relation.isAuthorOfPublication509bf5dc-e657-4052-8eca-019bb7e1350b
relation.isAuthorOfPublication3c69830b-43da-40f4-8cc4-8857118becaa
relation.isAuthorOfPublication.latestForDiscovery509bf5dc-e657-4052-8eca-019bb7e1350b
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