Bulletin: March 2012
U.S. DEPARTMENT OF THE INTERIOR NO. 3-12-EXP
GEOLOGICAL SURVEY MAY 30, 2012
ROUTINE MINING SEISMICITY IN THE UNITED STATES
MARCH 2012
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 22 53 58.4* 46.052 N 107.035 W 0 G B 1.4 90 6 EASTERN MONTANA. ML 2.7 (GS). 31 km (19 miles) SSE of
Hysham.
03 14 39 10.4* 44.528 N 105.673 W 0 G B 2.7 64 11 WYOMING. mbLg 2.7 (GS). 30 km (18 miles) NNW of
Gillette.
05 22 35 52.8? 44.03 N 105.36 W 0 G C 0.9 151 5 WYOMING. mbLg 2.6 (GS). 31 km (19 miles) SSE of
Gillette.
06 19 02 19.6 43.625 N 105.308 W 0 G A 1.7 75 17 WYOMING. ML 3.2 (GS). 76 km (47 miles) SSE of Gillette.
09 01 08 34.8 42.890 N 111.174 W 0 G A 0.8 57 20 SOUTHERN IDAHO. ML 2.8 (GS). 27 km (17 miles) NW of
Afton.
12 18 07 38.4 43.811 N 105.253 W 0 G A 0.9 51 48 WYOMING. mbLg 2.9 (GS). 57 km (35 miles) SSE of
Gillette.
12 20 08 29.6 43.565 N 105.462 W 0 G A 0.9 138 54 WYOMING. mbLg 2.9 (GS). ML 3.7 (GS). 68 km (42 miles)
ENE of Midwest.
12 23 36 22.8* 44.112 N 105.509 W 0 G B 1.1 118 6 WYOMING. mbLg 2.4 (GS). 16 km (10 miles) S of Gillette.
13 21 05 18.2 43.632 N 105.180 W 0 G A 0.6 78 17 WYOMING. mbLg 2.9 (GS). 77 km (48 miles) SSE of
Gillette.
15 18 05 03.0 43.752 N 105.186 W 0 G A 1.1 147 19 WYOMING. ML 3.0 (GS). 65 km (40 miles) SSE of Gillette.
15 20 06 23.5 43.753 N 105.180 W 0 G A 1.2 52 48 WYOMING. ML 3.6 (GS). 65 km (40 miles) SSE of Gillette.
17 18 06 04.2 43.748 N 105.199 W 0 G A 1.2 74 29 WYOMING. ML 3.3 (GS). 65 km (40 miles) SSE of Gillette.
22 17 08 20.0* 43.380 N 105.075 W 0 G B 0.6 190 8 WYOMING. ML 3.0 (GS). 73 km (46 miles) NNE of Douglas.
22 18 23 08.8 43.779 N 105.157 W 0 G A 1.0 72 16 WYOMING. ML 3.0 (GS). 63 km (39 miles) SSE of Gillette.
22 21 52 23.3 41.737 N 108.632 W 0 G A 1.0 70 25 WYOMING. ML 2.9 (GS). 50 km (31 miles) ENE of Rock
Springs.
24 15 57 29.2 43.895 N 105.365 W 0 G A 1.4 88 11 WYOMING. mbLg 2.9 (GS). 45 km (28 miles) SSE of
Gillette.
27 17 21 43.0 44.132 N 105.309 W 0 G A 1.0 51 44 WYOMING. ML 3.3 (GS). 23 km (15 miles) SE of Gillette.
27 18 25 56.3* 33.956 N 83.341 W 0 G B 1.0 157 8 GEORGIA, USA. mbLg 2.0 (GS). 4 km (2 miles) E of
Athens. Felt (III) at Athens.
27 21 41 23.1* 43.529 N 105.108 W 0 G B 1.0 85 9 WYOMING. mbLg 3.0 (GS). 78 km (48 miles) WSW of
Newcastle.
30 19 48 12.4 36.474 N 110.488 W 0 G A 1.2 78 12 ARIZONA. ML 2.6 (GS). 35 km (22 miles) SW of Kayenta.
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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