Definitions to know for Ancient History Palaeontology- The branch of science concerned with fossil animals and plants Pumice- A very light and porous volcanic rock formed when a gas-rich froth of glassy lava solidifies rapidly Source- A source is a piece of material used as ‘evidence’ when focusing on a particular time period‚ event or moment in history Primary source- Primary source is a term used in a number of disciplines to describe source material that is closest to the person‚ information
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warning of volcanic activity. The eruption‚ beginning that fateful August morning‚ lasted over 24 hours. The eruption was the first one ever recorded in history. An explosion came from the mountain and fine ash fell on the
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Convergent Plate Boundaries Convergent plate boundaries are locations where lithospheric plates are moving towards one another. The plate collisions that occur in these areas can produce earthquakes‚ volcanic activity and crustal deformation. Convergent Plate Boundary – Oceanic-Continental: When continental and oceanic plates collide the thinner and more dense oceanic plate is overridden by the thicker and less dense continental plate. The oceanic plate is forced down into the mantle in a process
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What forms after volcano eruption and after magma cools? Igneous rock forms when superheated volcanic liquid‚ also called magma‚ cools and thus hardens through a process of crystallization in one of two manners: by cooling and crystallization on the Earth’s surface such as after a volcanic eruption; or by cooling more gradually through a process of rising as it cools through the magma while still below the Earth’s surface. Scientists further classify such rocks based on their mineral characteristics:
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around the volcano * Meteor Craters form a hole in the ground test for rocks around the volcano * * * * * Salt Dome and Salt GlaciersSalt is Ductile * Caldera Caldera Caldera (huge pits in the ground caused by volcanic eruptions) * Check for lava rocks near the happening * Magma Chamber Magma Chamber January 10‚ 2013 Lecture Notes Tectonic Plates * They float (lower density * They move at a rate of cm/ year * Plate tectonics deform
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crust once a high enough pressure point is reached. Volcanic eruption is the result of magma reaching the Earth’s surface. The second main part I will tell you about is the main vent. The main vent is the main channel through which the hot magma moves to reach the Earth’s surface . To reach the Earth’s surface‚ the main vent can be several miles long‚ having one end connected to the magma chamber and one reaching the surface. During volcanic eruption‚ most of the lava ejects through the main vent
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Natural Disasters: An examination of the causes‚ effects‚ and options available to mitigate natural disasters‚ such as earthquakes‚ volcanic eruptions‚ landslides‚ subsidence‚ flooding‚ severe weather‚ and meteorite impacts. Natural Disaster Information: 1. Natural Disasters in General 2. Earthquakes 3. Volcanic Eruptions 4. Tsunami 5. Landslides 6. Floods 7. Weather Related Disasters 8. Meteorite Impacts NATURAL DISASTERS IN GENERAL: Natural disasters This being my senior
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& Wignal P. B.‚ 1997. Mass Extinctions and their aftermath. Jablonski D.‚ 2001. Lessons from the past: Evolutionary impacts of mass extinctions. McGee Kenneth A.‚Doukas Michael P.‚ Kessler Richard‚ and Terrence M. Gerlach 1997. Impacts of Volcanic Gases on Climate‚ the Environment‚ and People. U.S. Geological Survey Open-File Report 97-262 Wignall P.B.‚ 2000. Large igneous provinces and mass extinctions. Earth-Science Reviews. 1177.
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Where is the Ring of Fire?The Ring of Fire is a zone of frequent earthquakes and volcanic eruptions that encircles the basin of the Pacific.Why is it called the ring of fire have to do with plate tectonics? The Ring of Fire is a direct consequence of plate tectonics and the movement and collisions of crustal plates.What does the ring of fire have to do with plate tectonics?The "Ring of Fire" refers to a string of volcanoes‚ which create a ring in the Pacific. The relevance to plate tectonics‚ is
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Geyser‚ Aurum Geyser‚ Castle Geyser‚ Sawmill Geyser‚ Grand Geyser‚ Oblong Geyser‚ Giant Geyser‚ Daisy Geyser‚ Grotto Geyser‚ Fan & Mortar Geysers‚ &Riverside Geyser‚ all in the Upper Geyser Basin which alone contains nearly 180 geysers. The Taupo Volcanic Zone is located on New Zealand’s North Island. It is 350 kilometres (217 mi) long by 50 km wide (31 mi) and lies over a subduction zone in the Earth’s crust. Mount Ruapehu marks its southwestern end‚ while the submarine Whakatane volcano (85 km or
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