Registro sedimentario y paleontológico de la laguna Grande de Villafáfila, Zamora
- I. Armenteros 1
- P. Huerta 1
- M.R. Rivas Carballo 1
- B. Martínez-García 2
- M. Jambrina Enríquez 3
- C. Recio 1
- P. Carrasco 1
- J.C. Gonzálo 1
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1
Universidad de Salamanca
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- 2 Universidad el País Vasco
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3
Universidad de La Laguna
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ISSN: 1576-5172
Any de publicació: 2021
Títol de l'exemplar: X Congreso Geológico de España
Número: 18
Pàgines: 138-140
Tipus: Article
Altres publicacions en: Geotemas (Madrid)
Resum
The sedimentary record of Laguna Grande of Villafáfila has been studied from a sedimentological and paleontolo- gical viewpoint. The 3.05 m long drill core consists of silicilclastic deposits (quartz, phyllosilicates and feldspar) made up of: 1) very fine sandstones with carbonate crusts from 3.05 to 1.8 m.; and 2) siltstones with diffuse calcite cementation from 1.8 to 0 m. The fossil content, poor in the lower interval, consists of palynomorphs, charophytes and ostracods; benthic forami- nifers, insect larvae, and gastropods are locally present in the upper interval. The sedimentary and paleontological features indicate evolution from a fluvial flood plain environment in the lower 1.2 m to wetland conditions along the remaining 1.8 m. Both domains show signs of ephemeral subaerial exposure.