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ИСТИНА ЦЭМИ РАН |
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This work contains new data about sub-effusive magmatic breccias with quartz-potassium feldspar-porphyry cement of rhyolite-trachyriolite composition. These breccias are associated with biotite-hornblende granites (rapakivi), probably, form the feeding channel of an effusive center confined to the Salmi Batholith.