3.1 magnitude earthquake near Texas Creek

Friday, January 25, 2008 at 08:49:01 PM (MST)

Maps!

Details

Phase Data 

Theoretical P-wave travel times 

cool maps and photos pinpoint location! 

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The epicenter is north of Texas Creek, Colorado.

I superimposed the photograph and topo map from the USGS site (http://neic.usgs.gov/neis/bulletin/neic_mrae_l.html) and consulted my own topography maps and aerial photos of this area to confirm the location.  This is the location of the mark on the USGS's maps for this earthquake, as near as I can determine without GPS equipment.

If you drove to the top of the hill that drops off into the rose quartz mine...and stopped at the top of the hill, lol, and then walked towards Hindman gulch you would come close to the area of epicenter in about 1 mile.

The epicenter is between Hindman Gulch and Table Mountain. According to the mark on the USGS map, it is about 1 mile northwest of Hindman Rock and 3 miles southeast of the highpoint of Table mountain.  It is 2 miles southeast of the small peak of Bull Ridge.

If you are not sure about Hindman Rock you can place a ruler on the low point of Table mountain and line up with Echo curve on Hwy 50 (the word Echo is on USGS Topo maps); the distance is 5.5 miles.  At 3.25 miles from your mark on Table mountain, you have the epicenter.

There was evidence of very slight movement in the cracks between some of the massive granite boulders.  I noticed separation of lichen in the cracks, and in one case, possible slab movement of 6 to 12 inches.  Can't say for sure.

I had hoped to get on top of this outcrop of boulders (it shows up as a small circle on better topo maps) and take a panoramic view image.  Unfortunately, the wind would not allow it.

While retrieving a glove that had fallen into a crevasse in these massive boulders, it occurred to me, simultaneously with thoughts of aftershocks, that granite weighs 185 lbs per cubic foot....even denser than me....

Here is a photo taken from the epicenter looking towards the Sangre de Cristos.

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