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UTC time: 1983-10-28 14:06:09: ISC event: 567352: USGS-ANSSComCat: Local date: October 28, 1983 (): Local time: 08:06 MDT [1]: Magnitude: 6.9 M w [1]: Depth: 16 km (9.9 mi) [2] Epicenter: 2]: Fault: Lost River Fault [3]: Type: Normal [3]: Areas affected: Central Idaho United States: Total damage: $12.5 million [4]: Max. intensity: MMI IX (Violent) [4]: Landslides: Yes: Aftershocks: 5.6 M w Oct ...
Since 1919, the Idaho Geological Survey (formerly Bureau of Mines and Geology) has studied and reported on the general and environmental geology of the state. The Survey also studies and reports on the water (both surface and ground), mineral data, and energy assets of the state.
The Challis Arc was an Eocene volcanic field that stretched from southwestern British Columbia through Washington to Idaho, United States. [1] The volcanic field extended between 42 and 49 degrees north latitude and was about 1500 kilometers in length. It exhibited volcanic activity for about 10 million years. [2]
The Idaho Batholith is a granitic and granodioritic batholith of Cretaceous-Paleogene age that covers approximately 25,000 square kilometres (9,700 sq mi) of central Idaho and adjacent Montana. The batholith has two lobes that are separate from each other geographically and geologically.
The Wayan Formation is a geological formation in Idaho whose strata date back to the latest Early Cretaceous and the earliest Late Cretaceous.Dinosaur, other reptile, mammal, and micro and macro-floral remains are among the fossils that have been recovered from the formation.
Search. Search. Appearance. Donate ... of Central and Southern Idaho: Idaho Geological Survey Bulletin ... tuff in the Snake River Plain, Idaho: U.S. Geological ...
The earliest fossils of Idaho date back to the Precambrian. [1] However, little is known about Idaho's Precambrian life. [2] Among the few known fossils are trace fossils known as "trails" left by ancient worms burrowing through sediments were preserved in what is now Blackrock Canyon. [1] Fossil stromatolites are also known from the state's ...
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