Sedimentology and Stratigraphy of the Pleisocene sediments in Lake Llauset (Southern Pyrenees, Spain) a first approach

J.M. VILAPLANA, Ch. SCHLÜCHTER, A. VERDAGUER

Abstract


The high alpine valleys in the Southem Pyrenees are characterised by a many small lakes and ponds. They occur above 2000 m and are said to have been formed by glacial erosion. The sediments in these basins should, therefore, contain stratigraphic information since deglaciation, at least. An interesting and may be one of the most important of these basins is Lake Llauset in the Alta Ribagorca. The Llauset basin has recently been developped for hydsopower production. In conection with the construction of the retaining wall at the "Riegel" the sedimentary filling of the lake basin could be investigated, and the first sedimentological and stratigraphical results are presented.

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