RT Journal Article
T1 Formación de yeso autigénico en la llanura de inundación del río Tinto (Huelva). Implicaciones paleoambientales
T1 Formation of authigenic gypsum on the flood plain of the Tinto river (Huelva). Paleoenvironmental implications
A1 Fernández Caliani, Juan Carlos
A1 Galán Huertos, Emilio
AB This paper describes the occurrence of auth¡genic gypsum on the flood plain of the Río Tinto, a river highly polluted by acid mine-drainage. Gypsum appears typically as isolated tabular crystals of selenite scattered within the muddy sediment, and associated with day minerals, quartz, feldspars and halite. Both field and experimental data strongly suggest that the gypsum precipitated authigenically on the mudflat as a result of the reaction of acidic sulphate waters with detrital and biogenic calcite locally supplied by unpolluted tributaries. Consequently, in this case the presence of authigenic gypsum could be used as a paleoenvironmental indicator of the stream contamination
PB Sociedad Geológica de España
YR 1996
FD 1996
LK http://hdl.handle.net/10272/11058
UL http://hdl.handle.net/10272/11058
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 15 jun 2026