Noranda Caldera
The Noranda Caldera is a well-known large subaqueous Archean caldera complex not too far from Rouyn-Noranda, Quebec within the Blake [River Megacaldera Complex]. The caldera contains a 7-to-9-km-thick succession of bimodal mafic-felsic tholeiitic to calc-alkaline volcanic rocks which were erupted during five major series of volcanic activity.
The metallogenic impact of the Noranda Caldera is well-known, but the importance of the New [Senator Caldera] and Misema Caldera remains to be evaluated.