A NEW AREA OF ALKALINE ROCKS IN EASTERN PARAGUAY

PIERO COMIN-CHIARAMONTI, CELSO B. GOMES, RICARDO PETRINI, ANGELO DE MIN, DELIO ORUÉ

Resumo


Alkaline rocks can be found in three major areas (northern, northeastern and central-eastern) of Eastern Paraguay. On die basis of geographic distribution and tectonic association, Livieres & Quade (1987) proposed inclusion of these outcrop areas different alkaline provinces: Alto Paraguay, Amambay and Central, respectively (Fig. 1). Presently, only the Central Province, clustering the largest number of occurrences, is the subject of systematic investigation. Available information on the Alto Paraguay and Amambay rocks is still scarce

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