Bulletin: December 2011

 
U.S. DEPARTMENT OF THE INTERIOR                                                                         NO. 12-11-EXP
GEOLOGICAL SURVEY                                                                                        FEB 15, 2012
 
                                      ROUTINE MINING SEISMICITY IN THE UNITED STATES
 
                                                       DECEMBER 2011
 
 
  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                                                
 
02  19 08 12.9  43.769 N  105.233 W   0 G           A 1.1  114   26  WYOMING. ML 3.4 (GS). 62 km (38 miles) SSE of Gillette.
02  23 05 26.5  44.321 N  105.226 W   0 G           A 1.4   80   17  WYOMING. ML 2.8 (GS). 22 km (14 miles) E of Gillette.
                                                                      ML 2.8 (GS).
03  21 08 10.9  43.708 N  105.376 W   0 G           A 1.1  147   10  WYOMING. ML 2.9 (GS). 66 km (41 miles) S of Gillette.
04  21 07 04.2  43.716 N  105.236 W   0 G           A 1.1   51   64  WYOMING. ML 3.5 (GS). 69 km (43 miles) SSE of Gillette.
08  20 06 18.4  43.617 N  105.169 W   0 G           A 1.0   79   16  WYOMING. ML 3.0 (GS). 80 km (49 miles) SSE of Gillette.
08  21 49 42.5  41.845 N  108.551 W   0 G           A 1.4   70   18  WYOMING. ML 2.5 (GS). 61 km (38 miles) ENE of Rock
                                                                      Springs.
08  23 01 51.9  40.543 N  109.292 W   0 G           A 1.2  137   12  UTAH. ML 2.6 (GS). 22 km (14 miles) ENE of Vernal.
09  21 03 40.7  43.676 N  105.241 W   0 G           A 1.0   51   20  WYOMING. ML 3.2 (GS). 70 km (43 miles) SSE of Gillette.
10  19 34 31.4  43.803 N  105.274 W   0 G           A 0.9   47   34  WYOMING. ML 3.1 (GS). 57 km (36 miles) SSE of Gillette.
12  20 00 33.6  43.204 N  105.766 W   0 G           A 1.1   89   39  WYOMING. mbLg 2.6 (GS). 48 km (30 miles) ESE of Midwest.
12  20 11 04.5  43.784 N  105.191 W   0 G           A 1.0   45   48  WYOMING. mbLg 2.8 (GS). 61 km (38 miles) SSE of
                                                                      Gillette.
14  17 31 15.6  43.507 N  105.351 W   0 G           A 1.3   69   53  WYOMING. mbLg 2.8 (GS). 76 km (47 miles) E of Midwest.
15  20 39 41.7* 44.372 N  104.997 W   0 G           B 2.0   76   33  WYOMING. mbLg 3.0 (GS). 41 km (26 miles) ENE of
                                                                      Gillette.
15  22 04 21.4* 41.521 N  109.078 W   0 G           B 1.3   95    9  WYOMING. ML 2.6 (GS). 13 km (8 miles) SE of Rock
                                                                      Springs.
19  19 14 31.4  43.822 N  105.207 W   7             A 0.8   69   51  WYOMING. ML 3.4 (GS). 57 km (36 miles) SSE of Gillette.
19  20 27 35.5  43.586 N  105.194 W   0 G           A 0.9   80   38  WYOMING. mbLg 2.8 (GS). ML 3.3 (GS). 82 km (51 miles)
                                                                      SSE of Gillette.
20  22 49 03.5* 45.945 N  107.166 W   0 G           B 0.4   87    9  EASTERN MONTANA. mbLg 2.7 (GS). 39 km (24 miles) S of
                                                                      Hysham.
21  19 03 00.3  43.692 N  105.216 W   0 G           A 1.0   40   64  WYOMING. ML 3.3 (GS). 69 km (43 miles) SSE of Gillette.
21  19 08 30.2  43.805 N  105.151 W   0 G           A 0.8   71   42  WYOMING. ML 3.6 (GS). 62 km (38 miles) SSE of Gillette.
21  21 06 27.6  44.466 N  105.461 W   0 G           A 0.8  121   12  WYOMING. mbLg 2.7 (GS). 20 km (12 miles) N of Gillette.
21  22 57 23.2* 43.759 N  105.350 W   0 G           B 1.2  131    7  WYOMING. mbLg 2.3 (GS). 60 km (37 miles) SSE of
                                                                      Gillette.
22  21 58 31.4? 45.78  N  106.53  W   0 G           C 1.8  223    7  EASTERN MONTANA. ML 2.7 (GS). 13 km (8 miles) SSE of
                                                                      Colstrip.
22  23 14 36.1* 40.697 N  109.428 W   0 G           B 0.9  108    8  UTAH. ML 3.0 (GS). 28 km (17 miles) NNE of Vernal.
25  19 08 36.9  43.729 N  105.241 W   0 G           A 1.4  140   17  WYOMING. mbLg 2.7 (GS). 66 km (41 miles) SSE of
                                                                      Gillette.
28  21 07 32.0  43.799 N  105.314 W   0 G           A 0.8   88   10  WYOMING. mbLg 2.8 (GS). 55 km (34 miles) SSE of
                                                                      Gillette.
28  22 07 41.5* 44.140 N  105.415 W   0 G           B 0.7  102    8  WYOMING. mbLg 2.7 (GS). 18 km (11 miles) SSE of
                                                                      Gillette.
29  21 03 31.2* 45.326 N  107.057 W   0 G           B 1.4  178    6  EASTERN MONTANA. ML 2.5 (GS). 59 km (37 miles) N of
                                                                      Sheridan.
29  21 40 17.9* 43.956 N  105.110 W   0 G           B 0.9  134    8  WYOMING. ML 3.2 (GS). 49 km (31 miles) SE of Gillette.
30  19 51 18.3  45.155 N  106.768 W   0 G           A 1.4   65   34  EASTERN MONTANA. ML 3.0 (GS). 42 km (26 miles) NNE of
                                                                      Sheridan.
 

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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