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Earthquake Hazards Program

Bulletin: August 2004

U.S. DEPARTMENT OF THE INTERIOR                                                                         NO. 4-268-EXP
GEOLOGICAL SURVEY                                                                                        SEP 24, 2004
 
                                      ROUTINE MINING SEISMICITY IN THE UNITED STATES
 
 
  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                                               
 
AUG 2004
04  18 01 55.9  43.921 N  105.549 W   0 G           A 1.3  136   13  WYOMING. ML 3.2 (GS). 40 km (25 miles) S of Gillette.
06  20 08 43.8  43.782 N  105.285 W   0 G           A 0.8  166   11  WYOMING. ML 3.4 (GS). 60 km (35 miles) SSE of Gillette.
07  18 01 24.7  43.804 N  105.339 W   0 G  4.2      A 1.0  139   23  WYOMING. ML 3.4 (GS). 55 km (35 miles) SSE of Gillette.
10  18 00 33.1* 43.771 N  105.059 W   0 G           B 0.7  145    9  WYOMING. ML 3.4 (GS). 70 km (40 miles) SSE of Gillette.
26  18 06 45.4  43.752 N  105.218 W   0 G           A 0.9   72   33  WYOMING. ML 3.4 (GS). 65 km (40 miles) SSE of Gillette.
28  17 59 49.8  43.824 N  105.296 W   0 G           A 0.8  110   22  WYOMING. ML 3.2 (GS). 55 km (35 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.

Routine U.S. Mining Seismicity Home Page | Goal and Scope of the Bulletin | Evidence used in Identifying Routine Mining Seismicity | Explanation of Catalog Listings | Mining Seismicity Source Regions

Comments and feedback: dewey@usgs.gov 

 


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