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  2. List of earthquakes in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_earthquakes_in_the...

    2. 2022 Ferndale earthquake [35] April 5, 2024. New Jersey. 4.8 M w. 0. 2024 New Jersey earthquake [36] Two-percent probability of exceedance in 50 years map of peak ground acceleration from the United States Geological Survey, released July 17, 2014.

  3. California Geological Survey - Wikipedia

    en.wikipedia.org/wiki/California_Geological_Survey

    The California Geological Survey has had many names over its history. The original Geological Survey of California was replaced in April 1880 by the new California State Mining Bureau. This was renamed the Division of Mines in 1927. In 1962 the division's name was expanded to be California Division of Mines and Geology, a name that lasted until ...

  4. Grove Karl Gilbert - Wikipedia

    en.wikipedia.org/wiki/Grove_Karl_Gilbert

    After the creation of the U.S. Geological Survey in 1879, he was appointed to the position of Senior Geologist and worked for the USGS until his death (including a term as acting director). Gilbert published a study of the former ancient Lake Bonneville in 1890 (the lake existed during the Pleistocene), of which the Great Salt Lake is a remnant.

  5. List of Ozark springs - Wikipedia

    en.wikipedia.org/wiki/List_of_Ozark_springs

    The majority of these springs have been measured less than 10 times, at random intervals. The exceptions are Big Spring, Greer Spring, Mammoth Spring, Bennett Spring, Maramec Spring, Alley Spring, and Round Spring, which have all been measured for more than 3 years on a daily basis by the United States Geological Survey (USGS).

  6. Geological survey - Wikipedia

    en.wikipedia.org/wiki/Geological_survey

    A geological survey is the systematic investigation of the geology beneath a given piece of ground for the purpose of creating a geological map or model.Geological surveying employs techniques from the traditional walk-over survey, studying outcrops and landforms, to intrusive methods, such as hand augering and machine-driven boreholes, to the use of geophysical techniques and remote sensing ...

  7. Hayden Geological Survey of 1871 - Wikipedia

    en.wikipedia.org/wiki/Hayden_Geological_Survey...

    On July 24, 1871, the survey team departed Mammoth en route to Tower Fall. They took a route very close to today's Mammoth-Tower road passing both Undine Falls 44°56′39″N 110°38′20″W on Lava Creek and Wraith Falls 44°56′14″N 110°37′25″W on Lupine Creek. They reached and camped at Tower Creek on July 25, 1871.

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