Influencia de formas y procesos heredados en la evolución reciente y en los procesos morfodinámicos actuales en un sector de costa rocosa: Punta Gallín, costa cantábrica gallega.
- A. Feal-Pérez 1
- R. Blanco-Chao 1
- M. Valcárcel-Díaz 1
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1
Universidade de Santiago de Compostela
info
ISSN: 0214-2708
Year of publication: 2009
Volume: 22
Issue: 1-2
Pages: 67-78
Type: Article
More publications in: Revista de la Sociedad Geológica de España
Abstract
Recent research in Galician Coast demonstrated that, in shore platforms with homogeneous lithology, the Schmidt Hammer is able to identify changes in the rock strength caused by tidal weathering. In absence of mechanical erosion processes, weathering degree tends to increase towards the levels of high tide. In this work we have used a similar methodology, to study two small rocky platforms in the Cantabrian Galician coast that have developed on metamorphic rocks and with a cliff deposit in which levels of continental and marine origin alternate. The statistical analysis of the strength data obtained in these platforms has demonstrated that the morphological are not directly controlled by lithological differences but by the combined effects of the tidal weathering, and the inherited processes of mechanical erosion and weathering.