GLY 1880 Topic 4

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The New Madrid seismic zone occupies this region
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the central Mississippian River Valley
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Sand blows in the New Madrid seismic zone were rarely accompanied by the expulsion of quantities of water
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False
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The subsurface structural boundaries of the ancient rift in the New Madrid seismic zone are called the
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Reelfoot Rift
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Sand blows appear to be more common closer to the epicenters of the New Madrid earthquakes
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True
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Mr Jared Brooks of this city recorded the number and \”intensity\” of the New Madrid earthquakes
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Louisville, Kentucky
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The New Madrid earthquakes mostly occurred when?
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late 1811 and early 1812
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During New Madrid earthquakes, some islands in the Mississippi River
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disappeared due to liquefaction
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George Morgan obtained the land for the founding of New Madrid from Spanish authorities in what city
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New Orleans
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Mr Jared Brooks constructed his own instruments capable of detecting vertical and horizontal ground motion
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true
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Thousands of earthquakes have occurred in the New Madrid seismic zone during the last 35 years
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true
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This member of the US Geological survey made the first detailed study of the regional damage caused by the New Madrid earthquakes in 1912
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Myron Fuller
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The US Federal Emergency Management Agency issued a warning about this area saying that it could cause \”the highest economic losses due to a natural disaster in the US\” What area were they referencing?
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the New Madrid seismic zone
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Paleoseismic studies of the New Madrid seismic zone have discovered
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New-Madrid-type events on average every 450 years for the last 1200 years
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The San Francisco earthquake of 1906 was felt over a larger area than the New Madrid Earthquakes
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False
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How many earthquakes Jared Brooks recorded during the New Madrid earthquake episode
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almost two thousand
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The US government believes this region may potentially cause \”the highest economic losses due to a natural disaster in the United States\” and predicted that a 7.7 magnitude or greater quake could produce \”widespread and catastrophic\” damage across eight states
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the New Madrid seismic zone
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The New Madrid earthquakes occur at what type of plate boundary
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not at a plate boundary, they are intraplate earthquakes
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How many New Madrid earthquakes are thought to have had movement magnitudes of between 7 and 8
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4
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In 1983, seven states established the Central United States Earthquake Consortium to
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all of the above
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The deeply buried faults causing earthquakes in the New Madrid seismic zone are how old
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hundreds of millions of years
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the New Madrid seismic zone is thought to be a failed rift, called an
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aulacogen
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Which earthquake was accompanied by the more extensive development of uplifts and sunklands
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New Madrid
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What happened to the original New Madrid?
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what the earthquakes did not destroy the river did
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The Louisiana Territory was under ______ control from 1762 until the Treaty of San Ildefonso ceded it to the French and Napoleon Bonaparte in 1800. Shortly after coming into French ownership, the US bought the Louisiana Territory, signing a treaty on April 30th, _____
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spanish 1803
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The two largest cities in proximity to most of the the New Madrid earthquake epicenters were
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Louisville, Kentucky and Fort Saint Louis, Missouri

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