Mostrar el registro sencillo del ítem
dc.contributor.author
Fosdick, J. C.
dc.contributor.author
Reat, E. J.
dc.contributor.author
Carrapa, B.
dc.contributor.author
Ortiz, Gustavo Federico
dc.contributor.author
Alvarado, Patricia Monica
dc.date.available
2018-11-27T14:38:47Z
dc.date.issued
2017-03
dc.identifier.citation
Fosdick, J. C.; Reat, E. J.; Carrapa, B.; Ortiz, Gustavo Federico; Alvarado, Patricia Monica; Retroarc basin reorganization and aridification during Paleogene uplift of the southern central Andes; American Geophysical Union; Tectonics; 36; 3; 3-2017; 493-514
dc.identifier.issn
0278-7407
dc.identifier.uri
http://hdl.handle.net/11336/65297
dc.description.abstract
Tectonic development of the Andean Cordillera has profoundly changed the topography, climate, and vegetation patterns of the southern central Andes. The Cenozoic Bermejo Basin in Argentina (~30°S) provides a key record of thrust belt kinematics and paleoclimate south of the high-elevation Puna Plateau. Ongoing debate regarding the timing of initiation of upper plate shortening and Andean uplift persists, precluding a thorough understanding of the earlier tectonic and climatic controls on basin evolution. We present new sedimentology, detrital geochronology, sandstone petrography, and subsidence analysis from the Bermejo Basin that reveal siliciclastic-evaporative fluvial and lacustrine environments prior to the main documented phase of Oligocene-Miocene shortening of the Frontal Cordillera and Argentine Precordillera. We report the first radiometric dates from detrital zircons collected in the Ciénaga del Río Huaco Formation, previously mapped as Permian, that constrain a Late Cretaceous (~95–93 Ma) maximum depositional age. Provenance and paleocurrent data from these strata indicate that detritus was derived from dissected arc and cratonic sources in the north and northeast. Detrital zircon U-Pb ages of ~37 Ma from the overlying red beds suggest that foredeep sedimentation began by at least the late Eocene. At this time, sediment dispersal shifted from axial southward to transversal eastward from the Andean Arc and Frontal Cordillera. Subsidence analysis of the basin fill is compatible with increasing tectonic deformation beginning in Eocene time, suggesting that a distal foredeep maintained fluvial connectivity to the hinterland during topographic uplift and unroofing of the Frontal Cordillera, prior to Oligocene-Miocene deformation across the Precordillera.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Geophysical Union
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Bermejo Basin
dc.subject
Central Andes
dc.subject
Detrital Geochronology
dc.subject
Paleogene
dc.subject
Provenance Analysis
dc.subject
Subsidence
dc.subject.classification
Geología
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Retroarc basin reorganization and aridification during Paleogene uplift of the southern central Andes
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-10-22T17:25:19Z
dc.journal.volume
36
dc.journal.number
3
dc.journal.pagination
493-514
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Fosdick, J. C.. University of Connecticut; Estados Unidos
dc.description.fil
Fil: Reat, E. J.. University of Utah; Estados Unidos
dc.description.fil
Fil: Carrapa, B.. University of Arizona; Estados Unidos
dc.description.fil
Fil: Ortiz, Gustavo Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
dc.description.fil
Fil: Alvarado, Patricia Monica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
dc.journal.title
Tectonics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/2016TC004400
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1002/2016TC004400
Archivos asociados