@article{10272/11093,
year = {1996},
url = {http://hdl.handle.net/10272/11093},
abstract = {The development of a covered karst in the Miocene calcarenite formation in the N area of Niebla (Huelva) has been studied. The cover consists of sediments of Quaternary terraces of the River Tin to (T9, T8, T7 and T6), and to a lesser degree, fragments of Mio-Piiocene days («blue marls»). Solution of the calcarenite has originated vertical pipes of varying size evolving in the top to form funnel-shaped channels of preferential solution. These karstified areas generate dosed depressions that appear on the surface as alluvial dolines, basically bowl-shaped with smooth edges. Later erosion by streams has resulted in fluvial capture of the depressions and the breaking up of the alluvial cover, obstructing identification of the these landforms},
publisher = {Sociedad Geológica de España},
title = {Procesos kársticos en la Formación Calcarenita de Niebla (Huelva)},
title = {Karstic processes in the calcarenite formation of Niebla (Huelva, SW Spain)},
author = {Cáceres Puro, Luis Miguel and Rodríguez Vidal, Joaquín and Rodríguez Ramírez, Antonio and Cantano Martín, Mercedes},
}