Labels:text | screenshot | poster OCR: VOLCANIC GASES WATER VAPOUR (STEAM), CARBON DIOXIDE AND SULPHUROUS GASES. TEMPERATURE OF ABOUT 1000 ℃ LIQUID LAVA GEOLOGISTS ARE ESPECIALLY INTERESTED IN HOW IT FLOWS AND COOLS. SOLID MATERIAL FORMS PYROCLASTIC ROCKS SUCH AS ASH, TUFF AND AGGLOMERATE Sp RISING THE OPENING FROM MAGMA WHICH THE ERUPTION TAKES PLACE IS CALLED THE VENT. A VOLCANO MADE OF ALTERNATE LAYERS OF LAVA AND PYROCLASTIC MATERIAL IS CALLED COMPOSITE CONE.
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