A ProvÃncia AurÃfera Tapajós-Xingu: Avanços no ... - ADIMB
A ProvÃncia AurÃfera Tapajós-Xingu: Avanços no ... - ADIMB
A ProvÃncia AurÃfera Tapajós-Xingu: Avanços no ... - ADIMB
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THE UATUMÃ MAGMATISMIncludes calc-alkaline and alkaline granites and volcanic rocks with agesranging from ~2,0 to 1,75 Ga.These unit covers more than 1.200.000 km 2 (Santos et al. 2000), which isapproximately 30% of the Amazonian craton, excluding the PhanerozoicAmazon River basin.The original volcanic area could have reached 2.000.000 km 2Many areas where volcanic rocks outcrop are <strong>no</strong>t identified in geologicmaps, even in more recent workThe largest felsic province of the world