Depósitos de dunas ascendentes en la Sierra de Los Tarjados, provincia de La Rioja, Argentina

TRIPALDI, A.; LIMARINO C.O.

Geogaceta

Sociedad Geológica de España

Lugar: Barcelona; Año: 2000 p. 145 - 148

0213-683X

Eolian climbing dunes found in the sierra de Los Tarjados (south of the La Rioja province, Argentina) are described in this paper. According to their morphology two mayor types of dunes have been recognized: 1) climbing dunes associated to ramp deposits, which can ascent the mountain front; and 2) climbing dunes do not related to ramps and where deflationary channel developed beween the dune front and the cliff. Climbing dune sands show finer mean grain-size, better sorting and lower skewness that the associated sand sheet deposits.