Contribución de la geología minera al conocimiento de la cuenca permotriásica asturiana.

The exhaustive research developed to fluorite prospecting and mining in Llanera, Siero, Colunga, Caravia and Ribadesella, has enabled detailed knowledge about cartographic, stratigraphic and tectonic features in the asturian Permian-Triassic basin. For this paper there have been selected the main contributions effected by geologists -many of them foreigners- that took part in this activity. Most maps and structural sections came from unpublished companies documents or doctoral theses, so they were neither gathered nor integrated into current used geological maps in Asturias. [ABSTRACT FROM AUTHOR]