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August 31, 2018
By the numbers: Tennessee
5,302 geoscience employees (excludes self-employed)1
430 million gallons/day: total groundwater withdrawal3
$1.14 billion: value of nonfuel mineral production in 20174
68 total disaster declarations, including 31 severe storm, 17 flood, and 11 fire...
June 01, 2018
Introduction
Oil- and gas-rich rocks are only found in certain parts of the United States, so most of the country has no oil or gas wells. Where oil and gas production is commercially viable, many factors determine the exact location of each well, including leasing, permitting, competing land uses...
February 26, 2018
Earthquakes in the New Madrid Fault Zone
The New Madrid fault zone (NMFZ) is a long-established weakness in the Earth’s crust in the central and eastern US where earthquakes have occurred for hundreds of millions of years. In 1811-1812, three large earthquakes (up to magnitude 7.5) caused severe...
September 07, 2017
Introduction
Dry wells improve stormwater drainage and aquifer recharge by providing a fast, direct route for rainwater to drain deep into underlying sediment and rock. Dry wells are most common in the western U.S. where clay or caliche layers slow down the natural drainage of water into...
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