Ensayo de intervención en los macrofósiles de vertebrados de los yacimientos de las “Hoces de Beteta” (Cuenca, España)
- M.R. Alcalde-Fuentes 1
- J. Audije-Gil 2
- F. Barroso-Barcenilla 2
- M. Berrocal-Casero 2
- I. Claver-Díaz 3
- S. Ozkaya de Juanas 2
- J.A. Pérez-Valera 3
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1
Universidad Autónoma de Madrid
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2
Universidad de Alcalá
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3
Universidad Complutense de Madrid
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ISSN: 1576-5172
Year of publication: 2021
Issue Title: X Congreso Geológico de España
Issue: 18
Pages: 189-192
Type: Article
More publications in: Geotemas (Madrid)
Abstract
The different interventions carried out to date at the palaeontological sites of the “Hoces de Beteta” have allowed to recover, along with numerous microfossils and invertebrate macroremains, diverse vertebrate remains. Aiming to develop the analysis capacity which will allow to argument, in precise terms, the decisions made concerning the most appropriate restoration process for the preparation and preservation of the obtained bone specimens, among these, it has been selected, and due its representativeness, a fossil from the Vadillos-1 site. The chosen specimen corresponds to a postcranial remain of Dinosauria, which was in an adequate preservation state, but fragmented in seven pieces, one of them partially covered by a highly consistent carbonate concretion. Five experimental cycles of chemical and mechanical cleaning have been carried through to this piece, stablishing treatments with hydrogen chloride (HCI) diluted from 15 to 5%, in temporal intervals from 1 to 72h, followed by matrix elimination tests with a hand engraver. Once finished the chemical and mechanical cleaning, an estimative assessment of the developed cycles has been carried out, showing as more efficient those which include a more prolonged chemical treatment with more diluted acid. Finally, the seven fragments have been put together using reversible concentrated adhesive, remaining the specimen labelled and deposited in suitable preservation conditions.