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[en] This paper deals with the distribution of alkaline occurrences in Paraguayan territory and their assemblage into different provinces. Also draws the attention to the petrographic and geochemical characteristics showed by the alkaline rock-types. (author)
[en] Soils samples from the alkaline rocks area at Sapucai were studied. The total amount of P in the soils shows to be high, as well as the E value for the 32 P exclangeable phosphorus. Other parameters like V values, TEC, etc., and their relationschip also were analyzed
[en] The fossil assemblage from the Tagatiya Guazu Formation (Ediacaran Itapucumi Group, Paraguay) represents a unique opportunity to investigate paleoecological parameters and contribute with taxonomic information regarding Cloudina associations in SW Gondwana
[es]La asociación fósil de la Formación de Tagatiya Guazu (Grupo ediacárico de Itapucumi, Paraguay) representa una oportunidad única para investigar los parámetros paleoecológicos y contribuir con información taxonómica sobre las asociaciones de Cloudina en Gondwana SW.