Sundelagua 4
Vertical shaft of 16 metres in an asymmetric doline on the contact between blue marls and ochre Eocene calcarenites.
EspeleoWorld
Sundelagua 4
Vertical shaft of 16 metres in an asymmetric doline on the contact between blue marls and ochre Eocene calcarenites.
Valle de Yerri/Deierri
Sviluppo: 2 m · Profondità: 16 m
Scheda aggiornata
https://espeleoworld.com/it/c/sundelagua-4-valle-de-yerri-deierri
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Vertical shaft of 16 metres in an asymmetric doline on the contact between blue marls and ochre Eocene calcarenites.
Descrizione
Morfologia
It is located in an asymmetric doline on the contact between the blue marls and the ochre calcarenites of Eocene age (Upper Lutetian). The gentler relief corresponds to the marly materials. The northern side of the doline is formed by the calcarenites, which present steeper and more escarped slopes. At the bottom of this doline a vertical shaft of 16 metres opens up along a highly evolved joint of elliptical section, with a NE-SW direction.
Progressione
The bottom of this fissure is obstructed by blocks and clayey sediments that prevent its progression.
Storia
2007 Research Urbasa G.E.E
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Fonte: Gobierno de Navarra – Catálogo espeleológico de Navarra (datosabiertos.navarra.es), modificato. CC BY 4.0, https://creativecommons.org/licenses/by/4.0/ Gobierno de Navarra · dati aggiornati a 2022