Magnetocronología del Plioceno superior continental de la cuenca de Guadix-Baza (Cordilleras Béticas)

Stratigraphic superposition of mammal fossil-rich localities makes the Galera section (Baza Fm, Guadix-Baza Basin, Betics) very appropriate for magnetostratigraphic dating of the Late Pliocene continental biochronology. Independent correlation to the geomagnetic polarity time scale provides a precis...

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Detalles Bibliográficos
Autores: Garcés Crespo, Miguel, Agustí, J., Parés, J. M.
Tipo de recurso: artículo
Fecha de publicación:1996
País:España
Institución:Universidad de Huelva (UHU)
Repositorio:Arias Montano. Repositorio Institucional de la Universidad de Huelva
Idioma:español
OAI Identifier:oai:ariasmontano.uhu.es:10272/12812
Acceso en línea:http://hdl.handle.net/10272/12812
Access Level:acceso abierto
Palabra clave:Magnetostratigraphy
Late Pliocene
Ruscinian
Villanian
Guadix-Baza
Mammal
Descripción
Sumario:Stratigraphic superposition of mammal fossil-rich localities makes the Galera section (Baza Fm, Guadix-Baza Basin, Betics) very appropriate for magnetostratigraphic dating of the Late Pliocene continental biochronology. Independent correlation to the geomagnetic polarity time scale provides a precise calibration of the late Ruscinian and Villanian local mamma! zones. The Mimomys occitanus zone (MN15) ranges from chron C2Ar to the upper half of C2An, the Ruscinian/Villanian boundary being placed between 2 .7 and 3 .3 Ma. Earliest record of the Mimomys cappettai zone is found above the Gauss/Matuyama boundary (2An/2r at 2.58 Ma). The early/late Villanian boundary (MN16/MN17) is recorded in the upper half o f C2r, between 2 ,0 Ma and 2.3 Ma. A sedimentary hiatus o f 3 0 0 k y r is suggested to correlate to a lower Villanian basin-wide unconformity