Magnetostratigraphy of the Miocene continental deposits of the Montes de Castejón (central Ebro basin, Spain): geochronological and paleoenvironmental implications
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| Format: | Artículo científico |
| Langue: | en |
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Universitat de Barcelona
2004
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| author | F. J. Pérez-Rivarés |
| author_facet | F. J. Pérez-Rivarés |
| contents | Magnetostratigraphy of the Miocene continental deposits of the Montes de Castejón (central Ebro basin, Spain): geochronological and paleoenvironmental implications F. J. Pérez-Rivarés M. Garcés C. Arenas G. Pardo Ciencias de la Tierra Miocene Ebro basin Geochronology Magnetostratigraphy Sedimentation rates A detailed magnetostratigraphic study has been carried out in the early to middle Miocene distal alluvial andlacustrine sediments of the Montes de Castejón (central Ebro Basin). The study was based on the analysis of196 magnetostratigraphic sites sampled along a stratigraphic interval of about 240 meters. Local magnetostratigraphyyielded a sequence of 12 magnetozones (6 normal and 6 reverse) which could be correlated withthe Geomagnetic Polarity Time Scale (GPTS) interval C5Cr to C5AD (between 17 and 14.3 Ma.). The sampledsedimentary sequences include the boundary between two tectosedimentary units (TSU, T5 and T6) alreadydefined in the Ebro Basin. The magnetostratigraphy of the Montes de Castejón allows to date the T5/T6 TSUboundary at 16.14 Ma, within chron C5Cn.1n. This magnetostratigraphy also allows us to analyse in detail aswell as to discuss the variations in sedimentation rates through space and time between different lacustrine environments:Outer carbonate lacustrine fringes and distal alluvial plains (Montes de Castejón sections) show highersedimentation rates than offshore lacustrine areas (San Caprasio section, 50 km east of Montes de Castejón). 2004 artículo científico 1695-6133 https://www.redalyc.org/articulo.oa?id=50520304 en http://www.redalyc.org/revista.oa?id=505 Geologica Acta: an international earth science journal application/pdf Universitat de Barcelona Geologica Acta: an international earth science journal (España) Num.3 Vol.2 |
| format | Artículo científico |
| id | redalyc_50520304 |
| institution | Redalyc |
| language | en |
| publishDate | 2004 |
| publisher | Universitat de Barcelona |
| spellingShingle | Magnetostratigraphy of the Miocene continental deposits of the Montes de Castejón (central Ebro basin, Spain): geochronological and paleoenvironmental implications F. J. Pérez-Rivarés Ciencias de la Tierra Miocene Ebro basin Geochronology Magnetostratigraphy Sedimentation rates Magnetostratigraphy of the Miocene continental deposits of the Montes de Castejón (central Ebro basin, Spain): geochronological and paleoenvironmental implications F. J. Pérez-Rivarés M. Garcés C. Arenas G. Pardo Ciencias de la Tierra Miocene Ebro basin Geochronology Magnetostratigraphy Sedimentation rates A detailed magnetostratigraphic study has been carried out in the early to middle Miocene distal alluvial andlacustrine sediments of the Montes de Castejón (central Ebro Basin). The study was based on the analysis of196 magnetostratigraphic sites sampled along a stratigraphic interval of about 240 meters. Local magnetostratigraphyyielded a sequence of 12 magnetozones (6 normal and 6 reverse) which could be correlated withthe Geomagnetic Polarity Time Scale (GPTS) interval C5Cr to C5AD (between 17 and 14.3 Ma.). The sampledsedimentary sequences include the boundary between two tectosedimentary units (TSU, T5 and T6) alreadydefined in the Ebro Basin. The magnetostratigraphy of the Montes de Castejón allows to date the T5/T6 TSUboundary at 16.14 Ma, within chron C5Cn.1n. This magnetostratigraphy also allows us to analyse in detail aswell as to discuss the variations in sedimentation rates through space and time between different lacustrine environments:Outer carbonate lacustrine fringes and distal alluvial plains (Montes de Castejón sections) show highersedimentation rates than offshore lacustrine areas (San Caprasio section, 50 km east of Montes de Castejón). 2004 artículo científico 1695-6133 https://www.redalyc.org/articulo.oa?id=50520304 en http://www.redalyc.org/revista.oa?id=505 Geologica Acta: an international earth science journal application/pdf Universitat de Barcelona Geologica Acta: an international earth science journal (España) Num.3 Vol.2 |
| title | Magnetostratigraphy of the Miocene continental deposits of the Montes de Castejón (central Ebro basin, Spain): geochronological and paleoenvironmental implications |
| topic | Ciencias de la Tierra Miocene Ebro basin Geochronology Magnetostratigraphy Sedimentation rates |
| url | https://www.redalyc.org/articulo.oa?id=50520304 |