Pyrometamorphism of limestones and the temperature of basaltic magmas
Abstract Calc-silicate rocks which have been subjected to thermal metamorphism (sanidinite or spurrite-merwinite facies) are described from three localities on the Siberian Platform. All have formed in the aureoles of subvolcanic basaltic intrusions. The temperature of metamorphism, as estimated from the earlier published experimental data, is about 800–1000°C, whilst the temperature of the basaltic magma is believed to have been not less than 1200°C.