Over the last several weeks, earthquakes have rocked parts of the United States from Alaska to Wednesday morning's quake in Tennessee.
© 2020 Strange Sounds What Are the 6 Most Dangerous Fault Lines in the USA? A strike-slip fault is when two blocks slip past one another, like the San Andreas Fault line. Today millions of people live in densely populated urban areas like St. Louis and Memphis, In 1884, Brooklyn was rattled by an earthquake originating Toppling chimneys in New York City and felt as far away as Maine and Virginia, the magnitude 5.2 earthquake was a sudden wake-up call for settlers in the region.Running through Pennsylvania, New Jersey, and New York, the Ramapo has remained quiet for about 200 years.While studies have shown that a quake greater than 5.0 to 5.5 in magnitude is unlikely, A mid-magnitude earthquake in the right place could cause devastating damage.It’s capable of producing quakes ranging from 7.0 to 8.0 in magnitude.The last major movement along the Hayward Fault occurred on October 21, 1868, virtually destroying downtown Hayward.If we’re talking sheer magnitude, the largest recorded earthquake on North American soil hit Alaska on November 3, 2002.Starting on the Susitna Glacier Thrust Fault, the rupture raced along the Denali Fault System and continued 220 kilometers until it reached the Totschunda Fault, rattling 70 more kilometers.Here a video about the 1964 Alaskan earthquake, also known as the Great Alaskan earthquake and Good Friday earthquake, which occurred at 5:36 PM AST on Good Friday, March 27, 1964.This almighty quake caused extensive damage to the transportation systems in central Alaska.California sits at the border between two major tectonic plates — the Pacific plate, which is moving northwest, and the North American plate, which is sliding past it to the southeast.The two plates don’t just meet at a single line, and the state is crisscrossed with dozens of earthquake faults.The San Andreas is the most worrisome, because it generates the quakes that are really dangerous to California residents.The fault indeed slices California in two from Cape Mendocino to the Mexican border. Ridgefield Fault Line: One of the latest additions to the list is the Ridgefield fault line, which is believed to have been formed around 250 million years ago. [Follow Strange Sounds to discover amazing, weird and unexpected phenomena around the world. It includes information like how old the faults are and users can also click on the fault area to learn more about the specific fault there.Users can also search the database on faults to learn more about a specific fault. Be curious! There is an interactive map application to view the faults online and a separate database search function. San Francisco, Sacramento and the Sierra Nevada are on the North American Plate.While San Andreas does not go through San Francisco, it crosses Desert Hot Springs, San Bernardino, Wrightwood, Palmdale, Gorman, Frazier Park, Daly City, Point Reyes Station and Bodega Bay, (or just a few other million people). The most recent effort began in 1990 in support of the International Lithosphere Program (ILP), which formed Working Group II-2. The Quaternary fault and fold data for the United States has relied heavily on the past contributions, and on new efforts by State geological surveys and the U.S. Geological Survey. By the time Lewis and Clark arrived on the West Coast in 1805, it had been 105 years since The few remaining Native Americans in the area spoke of the earth shaking and ocean rising to consume the land. Earthquakes in this fault line can have devastating effects on states like New York, New Jersey, and Pennsylvania. Many tribes even left the region permanently.However, it wasn’t until the discovery of the Cascadia Fault in the 1960s that modern settlers truly understood the dangers they faced.Running 680 miles along the Pacific Northwest coastline, the Cascadia Fault directly threatens 3 major metropolitan areas: Portland, Seattle, and Vancouver.With Cascadia capable of producing a magnitude 9.0 earthquake, the Pacific Northwest may soon face shaking 16 times more powerful than San Francisco’s devastating 1906 earthquake, lasting 4 minutes and delivering a mighty tsunami of unimaginable proportions.It’s not just the West Coast that needs to watch out for tectonic obliteration.Between 1811 and 1812, this zone experienced some of the largest quakes in history.And although they originated in the Mississippi Valley, they rang church bells in Boston and shook New York City — over 1,000 miles away!Even then-President James Madison and his wife Dolley reportedly felt shaking at the White House.After one particularly large rupture in the fault, the mighty Mississippi River was forced to run backward for several hours, devastating acres of forest and creating 2 temporary waterfalls.Fortunately the Mississippi Valley was sparsely populated back then. The fact is most states are at risk of major earthquakes, with 39 of the 50 states – including New York and Tennessee – in moderate to high risk areas for seismic activity.
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