Registro sedimentario y paleontológico de la laguna Grande de Villafáfila, Zamora

  1. I. Armenteros 1
  2. P. Huerta 1
  3. M.R. Rivas Carballo 1
  4. B. Martínez-García 2
  5. M. Jambrina Enríquez 3
  6. C. Recio 1
  7. P. Carrasco 1
  8. J.C. Gonzálo 1
  1. 1 Universidad de Salamanca
    info

    Universidad de Salamanca

    Salamanca, España

    ROR https://ror.org/02f40zc51

  2. 2 Universidad el País Vasco
  3. 3 Universidad de La Laguna
    info

    Universidad de La Laguna

    San Cristobal de La Laguna, España

    ROR https://ror.org/01r9z8p25

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Journal:
Geotemas (Madrid)

ISSN: 1576-5172

Year of publication: 2021

Issue Title: X Congreso Geológico de España

Issue: 18

Pages: 138-140

Type: Article

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More publications in: Geotemas (Madrid)

Abstract

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.

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