Estratigrafia y vertebrados (Aves y Mammalia) de la Formacion Cerro Bandera, Mioceno Temprano de la Provincia del Neuquen, Argentina.
Stratigraphy and vertebrates (Aves and Mammalia) from the Cerro Bandera Formation, Early Miocene of Neuquén Province, Argentina.
| dc.contributor | en-US | |
| dc.contributor | es-ES | |
| dc.creator | Kramarz, Alejandro | |
| dc.creator | Garrido, Alberto | |
| dc.creator | Forasiepi, Analia | |
| dc.creator | Bond, Mariano | |
| dc.creator | Tambussi, Claudia | |
| dc.date | 2010-06-29 | |
| dc.identifier | http://www.andeangeology.cl/index.php/revista1/article/view/V32n2-a06 | |
| dc.identifier | 10.5027/andgeoV32n2-a06 | |
| dc.description | La Formacion Cerro Bandera comprende una serie de pequenos afloramientos aislados, que conforman los relictos de un antiguo relleno aluvial desarrollado sobre pequenos valles locales. Se compone de una sucesion de depositos piroclasticos reelaborados con intercalaciones de piroclastitas primarias y escasos niveles de areniscas. Estos depositos fueron originalmente reconocidos en el extremo nordeste de la Barda Negra, sur de Cerro Bandera y noroeste de Sierra del Portezuelo; nuevos afloramientos son reconocidos aqui en la vertiente noroeste del cerro Bayo Mesa, Provincia del Neuquen, Argentina. Los restos fosiles exhumados corresponden a aves (Falconidae) y mamiferos (17 familias), entre los que se destacan Cramauchenia normalis Ameghino, Proadinotherium cf. P. muensteri Ameghino, Eosteiromys sp. y Caviocricetus lucasi Vucetich y Verzi, junto con una especie de Protypotherium con dentadura mas primitiva que las conocidas para la Edad Santacrucense. Esta asociacion confirma una Edad Mamifero Colhuehuapense (Mioceno Temprano) para esta unidad. La fauna exhibe marcadas diferencias con la registrada en la seccion inferior de la Formacion Chichinales, Provincia de Rio Negro. El grado de diferenciacion faunistica entre estas dos unidades posiblemente sincronicas podria obedecer a diferencias en los factores paleoambientales locales. | es-ES |
| dc.description | The Cerro Bandera Formation comprises a series of isolated outcrops that represent the relicts of an old alluvial filling developed on small local valleys. It is composed of a succession of reworked pyroclastic deposits alternating with primary pyroclastic and scant sandstone levels. These deposits were originally recognized at the northeast of Barda Negra, south of Cerro Bandera and northwest of Sierra del Portezuelo; new exposures are herein recognised to the northwestern slope of Cerro Bayo Mesa, Neuquén Province, Argentina. The recovered fossil remains correspond to birds (Falconidae) and 17 families of mammals, among which are remarkable Cramauchenia normalis Ameghino, Proadinotherium cf. P. muensteri Ameghino, Eosteiromys sp. and Caviocricetus lucasi (Vucetich y Verzi), plus a species of Protypotherium with more primitive dentition than those known of the Santacrucian Age. This association confirms a Colhuehuapian SALMA (Early Miocene) for this unit. This fauna is markedly different from that recorded from the lower section of the Chichinales Formation, Río Negro Province. The degree of faunistic differentiation between these probably synchronous units could be a result of local palaeoenvironmental differences. | en-US |
| dc.format | application/pdf | |
| dc.format | text/html | |
| dc.language | eng | |
| dc.publisher | Servicio Nacional de Geología y Minería | en-US |
| dc.relation | http://www.andeangeology.cl/index.php/revista1/article/view/V32n2-a06/651 | |
| dc.relation | http://www.andeangeology.cl/index.php/revista1/article/view/V32n2-a06/html | |
| dc.source | Andean Geology; Vol 32, No 2 (2005) | es-ES |
| dc.source | Andean Geology; Vol 32, No 2 (2005) | en-US |
| dc.source | 0718-7106 | |
| dc.source | 0718-7092 | |
| dc.title | Estratigrafia y vertebrados (Aves y Mammalia) de la Formacion Cerro Bandera, Mioceno Temprano de la Provincia del Neuquen, Argentina. | es-ES |
| dc.title | Stratigraphy and vertebrates (Aves and Mammalia) from the Cerro Bandera Formation, Early Miocene of Neuquén Province, Argentina. | en-US |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
| dc.type | es-ES | |
| dc.type | en-US |
This item appears in the following Collection(s)
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Andean Geology
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