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Search indexed USGS publications on groundwater, aquifers, geologic maps, mineral resources and earthquakes. Explore source records by subject and place.

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At least 433 records · Page 24Linked to original sources
USGS1979

Tsunami alerting systems

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Earthquake Information Bulletin (USGS)↗
USGS1980

Mount St. Helens Volcano

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Earthquake Information Bulletin (USGS)↗
USGS1977

Earthquake lights

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Earthquake Information Bulletin (USGS)↗
USGS1970

4 Earthquake: Major offshore earthquakes recall the Aztec myth

Long before the sun clears the eastern mountains of April 29, 1970, the savanna highlands of Chiapas tremble from a magnitude 6.7 earthquake centered off the Pacific coast near Mexico’s southern border. Then, for a few hours, he Isthmus of Tehuantepec is quiet.

Earthquake Information Bulletin (USGS)↗
USGS1985

Tsunamis – Scourge of the Pacific

Although tsunamis occur most often in the Pacific Ocean, they can be generated by major earthquakes in other areas. The most frequent cause of tsunamis…is crustal movement along a fault: a large mass of rock drops or rises and displaces the column of water above it. This column of water – a tsunami – travels outward from the source at the fantastic speed of 500 mph or more. When an earthquake occurs in the Pacific Ocean Basin, authorities must quickly decide on a course of action.

Earthquake Information Bulletin (USGS)↗
USGS1985

Earthquake potential of the Wasatch Fault in Utah

The majority of Utah’s population lives along the Wasatch fault, an active intraplate normal fault that extends for approximately 230 miles along the western front of the Wasatch Range. Investigations of earthquake recurrence on the Wasatch fault have revealed that segments of the fault have been the source of repeated large earthquakes, probably of magnitude 6-3/4 to 7-1/2 .

Utah↗
USGS1979

Origins and early years of the U.S. Geological Survey

The U.S. Geological Survey was established on March 3, 1879, in the closing hours of the final session of the 45 th Congress. The bill appropriating the money for sundry civil expenses of the Government during fiscal year 1880 was signed by President Rutherford B. Hayes. Included in the bill was the provision for a new agency under the Department of the Interior; it was charged with responsibility for “classification of the public lands, and examination of the geological structure, mineral resources, and products of the national domain.”

Earthquake Information Bulletin (USGS)↗