The NMSZ is the most active seismic area in the United States east of the Rocky Mountains. The largest earthquake on record for Kentucky occurred on 07/27/1980, with a depth of 8.0 miles and a magnitude of 5.1 on the Richter scale in Bath County, KY. Yearly Average Number of Earthquakes in Kentucky. By the time Lewis and Clark arrived on the West Coast in 1805, it had been 105 years since the Cascadia Subduction Zone last ruptured, sending a large portion of the Pacific Ocean roaring toward the coast. 77. View Many of the published accounts describe the cumulative effects of all the earthquakes (known as the New Madrid Sequence), so finding the individual effects of each quake can be difficult. The NMSZ is located in southeastern Missouri, northeastern Arkansas, western … The few remaining Native Americans in the area spoke of the earth shaking and ocean rising to consume the land. Many tribes even left the region permanently. However, it wasn’t until the discovery of the Cascadia Fault in the 1960s th… The northernmost is called the Kentucky River Fault Zone, and the other is called the Irvine-Paint Creek Fault Zone. Matt Forir, a Geologist with Greene County, said the Ozarks are full of fault lines. 1. Kentucky Geological Survey interactive geologic map. Magnitude estimates and epicenters are based on interpretations of historical account… Kentucky geologic map data A GIS database of geologic units and structural features in Kentucky, with lithology, age, data structure, and format written and arranged just like the other states. In 2011, a magnitude 5.3 quake hit Trinidad, Colorado, another … The Northern Sangre de Cristo Fault. 2020-10-21 15:38:34 UTC 2.3 magnitude, 9 km depth Harlan, Kentucky, United States 2.3 magnitude earthquake 2020-10-21 15:38:34 UTC at 15:38 October 21, 2020 UTC Offsets … Two fault zones split from the Lexington Fault Zone eastward into the Eastern Kentucky Coal Field (part of the Appalachian Basin). Total Number of Earthquakes in Kentucky since 1931. “You can see there really isn’t a part of the county that is not somewhat close to a fault,” Forir said. The zone had four of the largest North American earthquakes in recorded history, with moment magnitudes estimated to be as large as 7.0 or greater, all occurring within a 3-month period between December 1811 and February 1812. A responsive, interactive map that provides detailed geologic information along with water, oil, gas, coal data for the Commonwealth of Kentucky.
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