Continental sedimentary successions exposed in Centinela del Mar, Buenos Aires, Argentina (Lower Pleistocene - Holocene)
In the present paper, the geomorphological and sedimentary characteristics of the continental sequences exposed on the coastal cliffs and surrounding areas of the Centinela del Mar locality are described and interpreted. Fourteen lithofacies are defined, their relation, geometry and structure are re...
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2011
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03670449_v67_n1_p21_Cenizo http://hdl.handle.net/20.500.12110/paper_03670449_v67_n1_p21_Cenizo |
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paper:paper_03670449_v67_n1_p21_Cenizo2023-06-08T15:36:03Z Continental sedimentary successions exposed in Centinela del Mar, Buenos Aires, Argentina (Lower Pleistocene - Holocene) Buenos Aires Centinela del Mar Geomorphology Lithofacies Pleistocene Stratigraphy allostratigraphy cliff depositional sequence geomorphological mapping lithofacies marine sediment Pleistocene-Holocene boundary sediment transport Argentina Buenos Aires [Argentina] Centinela del Mar In the present paper, the geomorphological and sedimentary characteristics of the continental sequences exposed on the coastal cliffs and surrounding areas of the Centinela del Mar locality are described and interpreted. Fourteen lithofacies are defined, their relation, geometry and structure are represented using transversal and longitudinal detailed profiles. In the basal and medium sector of the profile, facies of different degrees of transport and aqueous rework were recognized. In the superior sector, a succession of marine peri-coastal facies corresponding to the «Belgranense» transgression (=Fm. Pascua) were identified, ending the secuence with relictual eolic facies. The different historical interpretations are discussed, homologating the units referred previously with the ones proposed on this paper. These units are correlated with those defined in the allostratigrapic scheme proposed by other authors for the area covered between Playa San Carlos and Arroyo Chapadmalal. This allowed recognize for the area under study the presence of the Punta San Andrés and Arroyo Lobería Alloformations (basal-medium and superior sector, respectively). Between these two entities, a association of well defined progradant marine facies are found and named on this paper as Centinela del Mar Alloformation. Finally, periférithe information gathered here (magnetostratigraphy, radiometric dating, stratigraphic correlations, etc) indicates, at least preliminarily, that the secuence of Centinela del Mar corresponds to the Ensenadense- Lujanense interval (Lower Pleistocene - Holocene). 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03670449_v67_n1_p21_Cenizo http://hdl.handle.net/20.500.12110/paper_03670449_v67_n1_p21_Cenizo |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Buenos Aires Centinela del Mar Geomorphology Lithofacies Pleistocene Stratigraphy allostratigraphy cliff depositional sequence geomorphological mapping lithofacies marine sediment Pleistocene-Holocene boundary sediment transport Argentina Buenos Aires [Argentina] Centinela del Mar |
| spellingShingle |
Buenos Aires Centinela del Mar Geomorphology Lithofacies Pleistocene Stratigraphy allostratigraphy cliff depositional sequence geomorphological mapping lithofacies marine sediment Pleistocene-Holocene boundary sediment transport Argentina Buenos Aires [Argentina] Centinela del Mar Continental sedimentary successions exposed in Centinela del Mar, Buenos Aires, Argentina (Lower Pleistocene - Holocene) |
| topic_facet |
Buenos Aires Centinela del Mar Geomorphology Lithofacies Pleistocene Stratigraphy allostratigraphy cliff depositional sequence geomorphological mapping lithofacies marine sediment Pleistocene-Holocene boundary sediment transport Argentina Buenos Aires [Argentina] Centinela del Mar |
| description |
In the present paper, the geomorphological and sedimentary characteristics of the continental sequences exposed on the coastal cliffs and surrounding areas of the Centinela del Mar locality are described and interpreted. Fourteen lithofacies are defined, their relation, geometry and structure are represented using transversal and longitudinal detailed profiles. In the basal and medium sector of the profile, facies of different degrees of transport and aqueous rework were recognized. In the superior sector, a succession of marine peri-coastal facies corresponding to the «Belgranense» transgression (=Fm. Pascua) were identified, ending the secuence with relictual eolic facies. The different historical interpretations are discussed, homologating the units referred previously with the ones proposed on this paper. These units are correlated with those defined in the allostratigrapic scheme proposed by other authors for the area covered between Playa San Carlos and Arroyo Chapadmalal. This allowed recognize for the area under study the presence of the Punta San Andrés and Arroyo Lobería Alloformations (basal-medium and superior sector, respectively). Between these two entities, a association of well defined progradant marine facies are found and named on this paper as Centinela del Mar Alloformation. Finally, periférithe information gathered here (magnetostratigraphy, radiometric dating, stratigraphic correlations, etc) indicates, at least preliminarily, that the secuence of Centinela del Mar corresponds to the Ensenadense- Lujanense interval (Lower Pleistocene - Holocene). |
| title |
Continental sedimentary successions exposed in Centinela del Mar, Buenos Aires, Argentina (Lower Pleistocene - Holocene) |
| title_short |
Continental sedimentary successions exposed in Centinela del Mar, Buenos Aires, Argentina (Lower Pleistocene - Holocene) |
| title_full |
Continental sedimentary successions exposed in Centinela del Mar, Buenos Aires, Argentina (Lower Pleistocene - Holocene) |
| title_fullStr |
Continental sedimentary successions exposed in Centinela del Mar, Buenos Aires, Argentina (Lower Pleistocene - Holocene) |
| title_full_unstemmed |
Continental sedimentary successions exposed in Centinela del Mar, Buenos Aires, Argentina (Lower Pleistocene - Holocene) |
| title_sort |
continental sedimentary successions exposed in centinela del mar, buenos aires, argentina (lower pleistocene - holocene) |
| publishDate |
2011 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03670449_v67_n1_p21_Cenizo http://hdl.handle.net/20.500.12110/paper_03670449_v67_n1_p21_Cenizo |
| _version_ |
1768544320630030336 |