dc.creatorMancuso, Adriana Cecilia
dc.creatorIrmis, Randall Benjamin
dc.creatorPedernera, Tomas Ezequiel
dc.creatorGaetano, Leandro Carlos
dc.creatorBenavente, Cecilia Andrea
dc.creatorBreeden III, Benjamin T.
dc.date.accessioned2022-08-18T15:27:15Z
dc.date.accessioned2022-10-15T07:05:49Z
dc.date.available2022-08-18T15:27:15Z
dc.date.available2022-10-15T07:05:49Z
dc.date.created2022-08-18T15:27:15Z
dc.date.issued2022-06
dc.identifierMancuso, Adriana Cecilia; Irmis, Randall Benjamin; Pedernera, Tomas Ezequiel; Gaetano, Leandro Carlos; Benavente, Cecilia Andrea; et al.; Paleoenvironmental and Biotic Changes in the Late Triassic of Argentina: Testing Hypotheses of Abiotic Forcing at the Basin Scale; Frontiers Media; Frontiers in Earth Science; 10; 6-2022; 1-28
dc.identifier2296-6463
dc.identifierhttp://hdl.handle.net/11336/166013
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4358506
dc.description.abstractPaleoenvironmental factors such as climate change are often hypothesized as critical for ecosystem changes over evolutionary time scales. Theoretically, these changes should be observable in the fossil record, but the robust linkage of biotic shifts to climate events remains difficult. The Late Triassic Period is an ideal interval for testing such hypotheses within terrestrial ecosystems because of a number of large-scale climate events, such as the Carnian Pluvial Episode (CPE), and a rich, well-studied fossil record. Nonetheless, at regional to global scales, few linkages have been identified during most of the Late Triassic. Here, we synthesize a multi-proxy basin-scale dataset of paleoenvironmental data, including new information from clay mineralogy and paleosol major- and trace-element geochemistry, to understand paleoclimate changes in the Ischigualasto-Villa Unión Basin of northwestern Argentina. In combination with diversity and relative abundance information from the well-sampled plant and tetrapod fossil record in the basin, we then use accepted evolutionary models of abiotic forcing of changes in ecosystems to test previously proposed hypotheses of floral and faunal variations at a basin scale. We find that although many patterns are best explained by sampling issues and taphonomy, pseudosuchian archosaur diversity and rhynchosaur relative abundance conform to predictions of paleoenvironmental forcing as the climate changed from warmer, drier conditions to more temperate humid conditions. These data demonstrate how high-resolution multi-proxy data and a well-sampled fossil record at a basin-scale can be used to test hypotheses of abiotic forcing of ecosystems in deep time, and highlights where future efforts should be directed in terms of filling data gaps and testing new hypotheses.
dc.languageeng
dc.publisherFrontiers Media
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3389/feart.2022.883788
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/articles/10.3389/feart.2022.883788/full
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectCARNIAN PLUVIAL EPISODE
dc.subjectGONDWANA
dc.subjectISCHIGUALASTO FORMATION
dc.subjectISCHIGUALASTO-VILLA UNIÓN BASIN
dc.subjectMULTIPROXY CLIMATE DATASET
dc.titlePaleoenvironmental and Biotic Changes in the Late Triassic of Argentina: Testing Hypotheses of Abiotic Forcing at the Basin Scale
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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