Microearthquake Reconnaissance Near Bully Creek, Oregon, Seismic Records, Chalk Butte And Bully Creek Areas

Two Sprengnether Meq-800 Seismographs Were Operated Side-By-Side In A Mercury Mine Adit Of Hope Butte, 5 1/2 Km Nnw Of Bully Creek School, Or About 20Km Nw Of Vale, Oregon (Figure 1). The Instruments Were Operated Between 11 - 19 September, 1975, And Produced Legible Records During About 90 Percent Of That Interval. Gains Of 90 To 96Db Were Utilized. Portions Of Some Records Were Obscured By Wind Noise And 60 Hz Ac. The Operator Was John Deymonaz. The Seismometers Were Spaced About 150M Apart In A Mine (Figure 2). The North One Was A Mark Products L-4C 1Hz Vertical Component Seismometer Planted In The Mine; The South Unit Was A 4 Hz Vertical Component Geophone Of Somewhat Lower Response Than The Former. Hope Butte Is Composed Of Silicified Chalk Butte Sediments. Egi Reference Number Gl04926_2

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Additional Info

Field Value
Citation Date 1976-03-12T00:00:00

Harvest Information

Original ID 3FE49F8EEF27446E95308436B8825916
Index Date 2014-06-17T12:37:30
Original Format ISO-USGIN
Original Version 1.2


Name A. L. Lange
Email sbivens@egi.utah.edu

Geographic Extent

North Bound 46.3
South Bound 42
East Bound -116.46
West Bound -124.61