Resumen

GADEA, Moisés et al. Columnar siltstones display on the northeast border of the Asuncion Rift in the City of Limpio. Rev. Soc. cient. Parag. [online]. 2020, vol.25, n.2, pp.121-130. ISSN 2617-4731.  https://doi.org/10.32480/rscp.2020.25.2.121.

Coincident with one of the main faults of the Asuncion rift, it is exposed a small elevation dome shaped, constituted by columnar sandstones cerro Koĩ likewise on the border of the river Salado valley. The columnar prisms shows great development of their sides and dimensions, where it is supposed an alkaline igneous body underneath (same as their regional congeners) as responsible of the thermic effect and mechanical contraction due to water loss off the clastic material, for the growth and evolution of the columnar jointing. It is ascertained an abandoned quarry certainly depredated.

Palabras clave : columnar sandstones and siltstones; rift of Asunción; nephelinites.

        · resumen en Español     · texto en Español     · Español ( pdf )