The Ensenada and Buenos Aires formations (Pleistocene) in a quarry near La Plata, Argentina
Identifieur interne : 009248 ( Main/Exploration ); précédent : 009247; suivant : 009249The Ensenada and Buenos Aires formations (Pleistocene) in a quarry near La Plata, Argentina
Auteurs : E. P. Tonni [Argentine] ; P. Nabel [Argentine] ; A. L. Cione [Argentine] ; M. Etchichury [Argentine] ; R. T Falo [Argentine] ; G. Scillato Yané [Argentine] ; J. San Crist Bal [Argentine] ; A. Carlini [Argentine] ; D. Vargas [Argentine]Source :
- Journal of South American Earth Sciences [ 0895-9811 ] ; 1999.
Descripteurs français
- Wicri :
- geographic : Argentine.
English descriptors
- KwdEn :
- Actas, Aire, Ameghino, American earth sciences, Americanum, Argentina, Argentino, Asociacion, Baradero, Basal contact, Bidegain, Biozone, Bonaerense, Brown color, Brunhes, Brunhes zone, Brunhes zones, Buenos, Buenos aires, Buenos aires formation, Buenos aires formations, Buenos aires province, Cenozoic, Ciencias naturales, Cient, Cione, Clast, Clayey, Congreso, Conspicuous disconformity, Cutans, Disconformity, Elsevier science, Ensenada, Ensenada formation, Ensenadan, Fidalgo, Formacion, Formacion ensenada, Formacion pampiano, Fossil, Geographic distribution, Geologica, Geologico, Geosol, Hisisa, Hisisa geosol, Hornblende, Intermedius, Investigaciones cient, Irregular root, Jose hernandez, Light components, Loess, Loessic, Loessic levels, Lower lujanian, Lower part, Lujanian, Mammal, Matuyama, Matuyama zone, Megatherium, Megatherium americanum, Megatherium americanum biozone, Mesotherium, Mesotherium cristatum, Museo, Nabel, Orgeira, Paleosol, Paleosols, Pampaeus, Pampean, Pampean area, Panochthus, Partial skull, Pascual, Plagioclase, Plata, Pleistocene, Pleistoceno, Pleistoceno tard, Polarity, Polarity directions, Provincia, Pseudoseisura, Quartz, Republica argentina, Revista, Sediment, Sedimentos, Sedimentos pampeanos, Silt, Southwestern quarry, Stratigraphic, Stratigraphic succession, Tala geosol, Teatro, Teatro argentino, Thick paleosol, Tolypeutes, Tolypeutes pampaeus, Tolypeutes pampaeus biozone, Tonni, Upper boundary, Upper part.
- Teeft :
- Actas, Aire, Ameghino, American earth sciences, Americanum, Argentina, Argentino, Asociacion, Baradero, Basal contact, Bidegain, Biozone, Bonaerense, Brown color, Brunhes, Brunhes zone, Brunhes zones, Buenos, Buenos aires, Buenos aires formation, Buenos aires formations, Buenos aires province, Cenozoic, Ciencias naturales, Cient, Cione, Clast, Clayey, Congreso, Conspicuous disconformity, Cutans, Disconformity, Elsevier science, Ensenada, Ensenada formation, Ensenadan, Fidalgo, Formacion, Formacion ensenada, Formacion pampiano, Fossil, Geographic distribution, Geologica, Geologico, Geosol, Hisisa, Hisisa geosol, Hornblende, Intermedius, Investigaciones cient, Irregular root, Jose hernandez, Light components, Loess, Loessic, Loessic levels, Lower lujanian, Lower part, Lujanian, Mammal, Matuyama, Matuyama zone, Megatherium, Megatherium americanum, Megatherium americanum biozone, Mesotherium, Mesotherium cristatum, Museo, Nabel, Orgeira, Paleosol, Paleosols, Pampaeus, Pampean, Pampean area, Panochthus, Partial skull, Pascual, Plagioclase, Plata, Pleistocene, Pleistoceno, Pleistoceno tard, Polarity, Polarity directions, Provincia, Pseudoseisura, Quartz, Republica argentina, Revista, Sediment, Sedimentos, Sedimentos pampeanos, Silt, Southwestern quarry, Stratigraphic, Stratigraphic succession, Tala geosol, Teatro, Teatro argentino, Thick paleosol, Tolypeutes, Tolypeutes pampaeus, Tolypeutes pampaeus biozone, Tonni, Upper boundary, Upper part.
Abstract
Abstract: An interdisciplinary study of a section in a quarry near La Plata sheds new light on the geologic, climatic, and biologic evolution of the northeastern Pampean area of Argentina. The stratigraphic succession is composed of seven mainly eolian levels, each one including a soil and separated by a disconformity. Two geosols defined in northern Buenos Aires Province (Hisisa and El Tala) are identified in the Ensenada Formation. The boundary between the Ensenada and Buenos Aires formations is defined by a conspicuous disconformity which overlies the El Tala Geosol. In the section, the boundary between the Tolypeutes pampaeus (Ensenadan) and Megatherium americanum (lower Lujanian) biozones coincides with that of Ensenada and Buenos Aires formations. The boundary between the Matuyama and Brunhes zones of polarity occurs in the upper part of the Ensenada Formation above the Hisisa Geosol. According to geologic evidence, most of the succession was deposited under semiarid to arid climate.
Url:
DOI: 10.1016/S0895-9811(99)00021-8
Affiliations:
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biologic evolution of the northeastern Pampean area of Argentina. The stratigraphic succession is composed of seven mainly eolian levels, each one including a soil and separated by a disconformity. Two geosols defined in northern Buenos Aires Province (Hisisa and El Tala) are identified in the Ensenada Formation. The boundary between the Ensenada and Buenos Aires formations is defined by a conspicuous disconformity which overlies the El Tala Geosol. In the section, the boundary between the Tolypeutes pampaeus (Ensenadan) and Megatherium americanum (lower Lujanian) biozones coincides with that of Ensenada and Buenos Aires formations. The boundary between the Matuyama and Brunhes zones of polarity occurs in the upper part of the Ensenada Formation above the Hisisa Geosol. According to geologic evidence, most of the succession was deposited under semiarid to arid climate.</div></front></TEI><affiliations><list><country><li>Argentine</li></country></list><tree><country name="Argentine"><noRegion><name sortKey="Tonni, E P" sort="Tonni, E P" uniqKey="Tonni E" first="E. P." last="Tonni">E. P. Tonni</name></noRegion><name sortKey="Carlini, A" sort="Carlini, A" uniqKey="Carlini A" first="A." last="Carlini">A. Carlini</name><name sortKey="Cione, A L" sort="Cione, A L" uniqKey="Cione A" first="A. L." last="Cione">A. L. Cione</name><name sortKey="Etchichury, M" sort="Etchichury, M" uniqKey="Etchichury M" first="M." last="Etchichury">M. Etchichury</name><name sortKey="Nabel, P" sort="Nabel, P" uniqKey="Nabel P" first="P." last="Nabel">P. Nabel</name><name sortKey="San Crist Bal, J" sort="San Crist Bal, J" uniqKey="San Crist Bal J" first="J." last="San Crist Bal">J. San Crist Bal</name><name sortKey="Scillato Yane, G" sort="Scillato Yane, G" uniqKey="Scillato Yane G" first="G." last="Scillato Yané">G. Scillato Yané</name><name sortKey="T Falo, R" sort="T Falo, R" uniqKey="T Falo R" first="R." last="T Falo">R. T Falo</name><name sortKey="Tonni, E P" sort="Tonni, E P" uniqKey="Tonni E" first="E. P." last="Tonni">E. P. Tonni</name><name sortKey="Vargas, D" sort="Vargas, D" uniqKey="Vargas D" first="D." last="Vargas">D. Vargas</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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