When rock is totally solid it is known as solidus

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Lava Dome - a mound of viscous lava that has been extruded from a volcanic vent. When rock is totally solid, it is known as solidus Dome Growth Phase is when magma is being pumped out The one million earthquakes came about through magma moving beneath the volcanoes EXAMS!!! (Volcanic Earthquakes –Small and shallow) Smooth spines are created from the grinding of magma against the rocks, beneath the  volcano Metre cubes measure 1m by 1m by 1m Volcanoes are MORE ACTIVE in the beginning as compared to the end; it is observed  from the decreasing rates of eruptions Top Right Picture – Bread Crust Bombs. The shell of the magma cools really quickly and the insides are still hot. Hence it expands and that explains the cracks. In the Lateral Blast Holes, you find soil deposits from 1857-1980 Bigger stuffs settle down first before you find the fine grained deposits on top of the rest Red and yellow green stuffs on the sides of the volcanoes are hydrothermally altered Layers of deposits are preserved as they move down the sides of the volcanoes Small piles of deposits are known to be hummocks Hummocks are hydrothermally altered before they slide off the landslides Debris Avalanche Deposit are hydrothermally altered PF – Pyroclastic Flows Runout distances are how far the deposits can travel
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Lecture 16 Location of Monserrat Volcano on the World Map! (EXAMS!!!) Andesite Volcano Andesite lava is different from Basaltic lava Petrology Pyroclastic Flow Deposits
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  • Spring '09
  • Bergantz
  • Volcanoes, pyroclastic flow deposits, Andesite volcano, lateral blast deposits, fine grained deposits

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