Bulletin: April 2010

 
U.S. DEPARTMENT OF THE INTERIOR                                                                         NO.  4-10-EXP
GEOLOGICAL SURVEY                                                                                        AUG 31, 2010
 
                                      ROUTINE MINING SEISMICITY IN THE UNITED STATES
 
                                                         APRIL 2010
 
 
  ORIGIN TIME       GEOGRAPHIC      DEPTH MAGNITUDE Q SD  GAP  NO.   F-E REGION, CONTRIBUTED MAGNITUDES AND COMMENTS
      UTC          COORDINATES               GS                STA                                                
DAY HR MN SEC     LAT       LONG           mb  MS              USED                                                
 
04  18 14 51.7  43.729 N  105.238 W   0 G           A 1.6   51   21  WYOMING. ML 3.4 (GS). 65 km (40 miles) SSE of Gillette.
07  22 09 44.4* 45.135 N  106.854 W   0 G           B 2.0   64   14  EASTERN MONTANA. ML 2.5 (GS). 40 km (25 miles) NNE of
                                                                      Sheridan.
09  16 31 20.9  41.789 N  110.669 W   0 G           A 1.1  104   19  WYOMING. ML 2.4 (GS). 10 km (5 miles) W of Kemmerer.
09  21 44 34.8* 34.234 N  109.159 W   0 G           B 1.2  156    8  ARIZONA. ML 2.6 (GS). 60 km (40 miles) W of Quemado.
12  18 33 02.2  43.805 N  105.289 W   0 G           A 1.2   51   35  WYOMING. ML 3.3 (GS). 55 km (35 miles) SSE of Gillette.
18  18 06 23.9  43.632 N  105.194 W   1 *           B 1.4   60   29  WYOMING. ML 3.6 (GS). 75 km (50 miles) SSE of Gillette.
21  20 03 57.7  44.060 N  105.183 W   0 G           A 1.5   52   25  WYOMING. ML 3.4 (GS). 35 km (20 miles) SE of Gillette.
25  20 27 08.3? 50.09  N  114.66  W   0 G           C 1.1  258    9  ALBERTA, CANADA. ML 2.3 (GS). 100 km (65 miles) NE of
                                                                      Cranbrook.
30  18 56 39.3  43.564 N  105.209 W   0 G           A 1.2   51   34  WYOMING. ML 3.2 (GS). 85 km (50 miles) SSE of Gillette.

For origin times after September 30, 2002, USGS computations of hypocenters and magnitudes for routine mining events are listed in this publication only for exceptionally large events and for events that are also listed in the Reviewed Event Event Bulletins (REB) of the International Data Center of the United Nations' Comprehensive Nuclear-Test-Ban Treaty Organization.

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