Artículo

Tofalo, O.R.; Orgeira, M.J.; Castro, L.N.; Vizán, H.; Azcuy, C. "Late pleistocene paleoclimatic changes, Southeast Buenos Aires Province " (2017) Revista de la Asociacion Geologica Argentina. 74(4):485-496
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Abstract:

Stratigraphic detail study of an outcropping profile in the area of Claromecó, Buenos Aires province was performed. This research included the analysis of continental and marine facies, which provided a detailed paleoenvironmental, and paleoclimatic information of the Quaternary geological record of the southern Buenos Aires province area. Correspondingly, an optically stimulated luminescence age was obtained. Based on the surfaces of discontinuity in sedimentation and field and laboratory studies, the succession has been divided into five units to which overlie the presentsoil. Sediments from unit A cemented in a diagenetic phreatic marine environment with active water circulation. The unit B comprised two pedosedimentary stages, where paleosols were recorded, generated under seasonal semiarid climate. Units C and D are marine, the first corresponds to a mixed subtidal plain and the second to tidal channels. All of them are covered by a density flow corresponding to the Unit E. Four pulses that would identify warm periods or improvement in climate are recorded. Two of them are linked with the rise of the sea level and two with paleosols. From those related to marine ingressions, the oldest corresponds to unit A and the second to units C and D, while both associated to paleosols, developed on loess sediments, are represented in unit B. These four pulses correspond to 4 of the 5 substages in which it is divided the Marine Isotopic Stage 5. © 2017, Asociacion Geologica Argentina. All rights reserved.

Registro:

Documento: Artículo
Título:Late pleistocene paleoclimatic changes, Southeast Buenos Aires Province
Autor:Tofalo, O.R.; Orgeira, M.J.; Castro, L.N.; Vizán, H.; Azcuy, C.
Filiación:Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Instituto de Estudios Andinos Don Pablo Groeber (IDEAN), Buenos Aires, Argentina
Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Instituto de Geociencias Básicas y Aplicadas (IGEBA), Buenos Aires, Argentina
Universidad de Buenos Aires, Facultad de Agronomía, Departamento de Ingeniería Agrícola y uso de la tierra, Buenos Aires, Argentina
Palabras clave:Buenos Aires; Marine and continental facies; MIS 5; Paleosols; Quaternary; Substages
Año:2017
Volumen:74
Número:4
Página de inicio:485
Página de fin:496
Título revista:Revista de la Asociacion Geologica Argentina
Título revista abreviado:Rev. Asoc. Geol. Argent.
ISSN:00044822
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v74_n4_p485_Tofalo

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Citas:

---------- APA ----------
Tofalo, O.R., Orgeira, M.J., Castro, L.N., Vizán, H. & Azcuy, C. (2017) . Late pleistocene paleoclimatic changes, Southeast Buenos Aires Province . Revista de la Asociacion Geologica Argentina, 74(4), 485-496.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v74_n4_p485_Tofalo [ ]
---------- CHICAGO ----------
Tofalo, O.R., Orgeira, M.J., Castro, L.N., Vizán, H., Azcuy, C. "Late pleistocene paleoclimatic changes, Southeast Buenos Aires Province " . Revista de la Asociacion Geologica Argentina 74, no. 4 (2017) : 485-496.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v74_n4_p485_Tofalo [ ]
---------- MLA ----------
Tofalo, O.R., Orgeira, M.J., Castro, L.N., Vizán, H., Azcuy, C. "Late pleistocene paleoclimatic changes, Southeast Buenos Aires Province " . Revista de la Asociacion Geologica Argentina, vol. 74, no. 4, 2017, pp. 485-496.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v74_n4_p485_Tofalo [ ]
---------- VANCOUVER ----------
Tofalo, O.R., Orgeira, M.J., Castro, L.N., Vizán, H., Azcuy, C. Late pleistocene paleoclimatic changes, Southeast Buenos Aires Province . Rev. Asoc. Geol. Argent. 2017;74(4):485-496.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v74_n4_p485_Tofalo [ ]