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Título:
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Sedimentology of the distal fan and lake deposits of the Tianshui- Qinan Basin (Central China): evidences against a possible eolian origin
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Autores:
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Alonso-Zarza, Ana María ;
Li, J. ;
Zhao, Z. ;
Song, C. H. ;
Zhang, J. ;
Wang, X. ;
Zhang, Y.
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Tipo de documento:
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texto impreso
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Editorial:
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Sociedad Geológica de España., 2006
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Geología: Petrología
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Tipo = Artículo
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Resumen:
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In this paper we analyze two sections within the Tianshui-Qinan Basin, a closed basin in Central China. The deposits are Miocene and Pliocene in age and in recent times they have been considered as loess. The preliminary sedimentological study indicates a closed lacustrine basin, with a very flat topography in the inner parts. Periodical desiccation and subaerial exposure periods of both mudflats and shallow lakes caused important reworking of the sediments. The lake margins were ramp-like with different energy levels. Low energy lake margins are represented by marls, intraclastic and palus- trine limestones, whereas higher energetic levels are indicated by rippled sands and silts.
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En línea:
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https://eprints.ucm.es/id/eprint/60403/1/P%C3%A1ginas%20desdeGeo_temas_9.pdf
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