Una primera aproximación a las tasas de corrosión en la zona de mezcla de las cavidades subacuáticas costeras de Mallorca mediante tests de exposición de pastillas de roca (WLRT)
- Autores: Joan Josep Fornós Astó, Lluís Gómez Pujol, Francesc Gràcia Lladó
- Localización: Avances de la Geomorfología en España 2012-2014 / coord. por Susanne Cecilia Schnabel, Álvaro Gómez Gutiérrez, 2014, ISBN 978-84-617-1123-9, págs. 572-575
- Idioma: español
- Títulos paralelos:
- First attempt to evaluate corrosion rates in the mixed zone of underwater littoral cavities in Mallorca by means of Weight-Loss Rock Tablets (WLRT)
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Resumen
Current survey at Sistema Gleda-Camp des Pou (Felanitx, Mallorca) had shown more than 13.5 km of submerged passages, galleries and collapsed chambers characterized by a salinity profile going from 0 to 25 m bsl where different salinity levels separated by well defined haloclines can be clearly distinguished. Through a salinity gradient ranging from 3 to 35 PSU a test of rock tablet exposition (weight-loss rock tablets, WLRT) was installed to assess the corrosion rates related to the mixing zone area. Several sets were located at 50 cm interval of three aliquots composed of tablets of Miocene calcarenites and three more of aragonite aggregates, both protected by a nylon mesh 63 micrometers. Weight loss measures of the 126 tablets exposed during a two year period permitted to correlate salinity gradients with corrosion rates and to assess the importance of the process in the evolution of underwater conduits as well as in the different corrosion morphologies observed in the cavity walls and on speleothems.
