The Great 1906 San Francisco Earthquake

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Over the past five hundred years, Earthquake activity has increased tremendously. Even in 2015 Irving, Texas has had at least eighty nine earthquakes! Earthquakes are formed underground when tectonic plates begin to rub against one another. Earthquakes are starting to form and happen constantly because of many different reasons. One example being, fracking, which is the process of injecting liquid at high pressure into subterranean rocks, boreholes, etc., so as to force open existing fissures and extract oil or gas. When contractors frack they create manmade Earthquakes.

At 5:12 AM on April 18, 1906, the Great 1906 San Francisco Earthquake occurred. The rupture was about two hundred and ninety six miles. According to eyewitness
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The earthquake rupture started approximately twenty five kilometers beneath the surface, with its core about six miles (ten kilometers) east of the mouth of College Fiord and seventy five miles (one hundred and twenty kilometers) east of Anchorage. The earthquake lasted approximately four and half minutes and is the most powerful recorded earthquake in U.S. history. It is also the second largest earthquake ever recorded, next to the magnitude 9.5 earthquake in Chile in 1960. The aftershocks were about two hundred and fifty kilometers wide and they extended eight hundred kilometers. The main shock occurred on the fault boundary between the Pacific and North American plates. Over a thousand aftershocks were recorded after the main shock. On the first day the earthquake occurred over eleven aftershocks with magnitudes greater than 6.0 took place. In the weeks following nine occurred. Throughout the rest of the year smaller aftershock occurred periodically. Because of the earthquake, four hundred million dollars was recorded in damages. Major structures were destroyed throughout the cities in Alaska. The four and a half minutes of shaking also caused landslides and avalanches. Over one hundred and thirty thousand square kilometers received the most damage. Around one hundred and thirty one people were killed in total. One hundred and fifteen…show more content…
During this earthquake approximately one thousand six hundred and fifty five people were killed, three thousand were injured, two million were left homeless, and five hundred and fifty million dollars of damages in southern Chile was reported; the tsunami which occurred after the earthquake caused sixty one deaths, seventy five million dollars’ worth of damages in Hawaii; one hundred and thirty eight deaths and fifty million dollars’ worth of damages in Japan; thirty two dead and missing in the Philippines; and five hundred thousand dollars’ worth of damages to the west coast of the United
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