Bulletin: October 2011

 
U.S. DEPARTMENT OF THE INTERIOR                                                                         NO. 10-11-EXP
GEOLOGICAL SURVEY                                                                                        DEC 19, 2011
 
                                      ROUTINE MINING SEISMICITY IN THE UNITED STATES
 
                                                        OCTOBER 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                                                
 
01  21 10 33.2  43.472 N  104.572 W   0 G           A 1.0  143   10  WYOMING. ML 2.6 (GS). 52 km (32 miles) SW of Newcastle.
03  19 14 15.5  43.979 N  105.131 W   0 G           A 1.2   62   19  WYOMING. ML 3.2 (GS). 46 km (28 miles) SE of Gillette.
03  23 40 01.6  43.669 N  105.283 W   0 G           A 0.9   75   18  WYOMING. mbLg 2.4 (GS). 71 km (44 miles) SSE of
                                                                      Gillette.
04  19 29 06.7  43.775 N  105.216 W   0 G           A 1.2  116   22  WYOMING. ML 3.2 (GS). 62 km (38 miles) SSE of Gillette.
08  22 39 51.7  45.787 N  107.020 W   0 G           A 0.9   72   20  EASTERN MONTANA. ML 2.8 (GS). 33 km (20 miles) WSW of
                                                                      Colstrip.
11  19 04 26.2  43.594 N  105.146 W   0 G           A 1.6   81   24  WYOMING. ML 3.2 (GS). 81 km (50 miles) WSW of Newcastle.
11  19 54 49.2  44.093 N  105.280 W   0 G           A 0.9   53   45  WYOMING. ML 3.1 (GS). 29 km (18 miles) SE of Gillette.
11  20 49 24.9  45.925 N  106.462 W   0 G           A 0.7   80   13  EASTERN MONTANA. ML 2.8 (GS). 14 km (8 miles) ENE of
                                                                      Colstrip.
12  18 09 21.1  43.714 N  105.133 W   0 G           A 1.5   70   20  WYOMING. ML 3.0 (GS). 71 km (44 miles) SSE of Gillette.
17  18 12 38.4  43.774 N  105.219 W   0 G           A 1.1   71   23  WYOMING. ML 3.1 (GS). 62 km (38 miles) SSE of Gillette.
18  19 17 56.3  45.166 N  106.826 W   0 G           A 1.5   65   46  EASTERN MONTANA. ML 3.1 (GS). 42 km (26 miles) NNE of
                                                                      Sheridan.
20  23 17 39.4* 43.512 N  104.751 W   0 G           B 1.3  185    9  WYOMING. ML 2.6 (GS). 58 km (36 miles) SW of Newcastle.
23  20 10 46.6  43.623 N  105.206 W   0 G           A 1.1  123   12  WYOMING. mbLg 3.0 (GS). 76 km (47 miles) SSE of
                                                                      Gillette.
24  18 03 01.8  43.666 N  105.218 W   0 G           A 1.5   97   24  WYOMING. ML 3.2 (GS). 74 km (46 miles) SSE of Gillette.
25  19 09 23.9* 43.655 N  105.113 W   0 G           B 1.4  219   14  WYOMING. ML 3.2 (GS). 77 km (48 miles) WSW of Newcastle.
25  21 59 54.1  43.566 N  105.244 W   0 G           A 1.0  126   14  WYOMING. mbLg 2.9 (GS). 85 km (53 miles) SSE of
                                                                      Gillette.
26  21 47 52.3  45.854 N  106.702 W   0 G           A 1.0  110   11  EASTERN MONTANA. mbLg 2.8 (GS). 7 km (4 miles) WSW of
                                                                      Colstrip.
28  18 13 18.8  43.785 N  105.210 W   0 G           A 1.4   71   26  WYOMING. ML 3.2 (GS). 61 km (38 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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