dc.creatorMancuso, Adriana Cecilia
dc.creatorKrapovickas, Verónica
dc.creatorBenavente, Cecilia Andrea
dc.creatorMarsicano, Claudia Alicia
dc.date.accessioned2020-05-26T18:30:41Z
dc.date.accessioned2022-10-14T23:10:58Z
dc.date.available2020-05-26T18:30:41Z
dc.date.available2022-10-14T23:10:58Z
dc.date.created2020-05-26T18:30:41Z
dc.date.issued2020-03
dc.identifierMancuso, Adriana Cecilia; Krapovickas, Verónica; Benavente, Cecilia Andrea; Marsicano, Claudia Alicia; An integrative physical, mineralogical and ichnological approach to characterize underfilled lake-basins; Wiley Blackwell Publishing, Inc; Sedimentology; 3-2020; 1-31
dc.identifier0037-0746
dc.identifierhttp://hdl.handle.net/11336/105909
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4317855
dc.description.abstractLakes are particularly sensitive to environmental fluctuations, which arerecorded in their facies and stratigraphy. Ephemeral lakes reveal their sensi-tivity to palaeoenvironmental changes in the overprinting of the sedimentaryfeatures in every single bed. Tetrapod-track taphonomic-modes and ichno-logical taphonomic-pathways can be used as sensitive indicators of environ-mental conditions of the track-bearing beds during deposition andimprinting. The Middle Triassic Cerro de las Cabras succession (CuyanaBasin, Argentina) provides an excellent opportunity to these environmentalindicators in an underfilled palaeolake. A model of ichnological preservationfor underfilled lake systems is proposed and the role of the ichnology recordin the sequence stratigraphy analysis is evaluated, based on the integrationof tetrapod-track modes, taphonomic-pathways of playa-lake ichnofauna,mineralogy and physical data. Soft-ground suites include those dominatedby invertebrate grazing traces and arthropod locomotion traces (Suite 1), andthose overprinted by horizontal-vertical dwelling burrows with tetrapodtracks preserved in taphonomic modes B and C (Suite 2). The firm-groundsuite (Suite 3) comprises tetrapod-tracks with the best preservation styles(modes A and B) along less abundant invertebrate dwelling and feedingtraces as found in Suite 2. Clay mineralogy (dominated by illite with subor-dinate smectite) suggests low plasticity of the layers, in agreement with low-relief deformation structures observed in tetrapod-track taphonomic-modes.The well-preserved track tetrapod features documented in the Cerro de lasCabras succession, together with the absence of pedogenic disturbance, tram-pling obliterating the footprints, and/or evidence of strong disturbance bywind, desiccation and/or precipitation, supports short periods of exposure ofthe imprinted surface particular to this succession. An integrated multiproxyapproach is proposed to evaluate the evolutionary interpretation and identi-fication of autogenic versus allogenic controls in underfilled lake-basin histo-ries. The observed aggradational-trend suggests an equilibrium between ratesof accommodation change and sediment supply, and that the basin-centredid not experience prolonged sediment-starved conditions.
dc.languageeng
dc.publisherWiley Blackwell Publishing, Inc
dc.relationinfo:eu-repo/semantics/altIdentifier/url/http://doi.wiley.com/10.1111/sed.12736
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/sed.12736
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectCUYANA BASIN
dc.subjectSEDIMENTOLOGY
dc.subjectFOOTPRINT TAPHONOMY
dc.subjectICHNOLOGY
dc.titleAn integrative physical, mineralogical and ichnological approach to characterize underfilled lake-basins
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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