Outcrop or artificial surface exposure, Rhyolite
| Geographic location |
-109.281944, 32.776667
109°
16'
55"
W,
32°
46'
36"
N
Graham county,
AZ
Guthrie
1:62,500 scale map quadrangle
Accurate to within 1 minute (~1 mile)
SW1/4 SEC. 33, T7S, R30E
|
|---|---|
| Source of sample | Outcrop or artificial surface exposure |
| Rock name | Rhyolite |
| Description | RHYOLITE FLOW, ERUPTIVE CENTER OF ASH PEAK-RHYOLITE PEAK |
| Laboratories | University of Arizona |
| Compiler name | Hansen, J.K. |
| Date compiled | 1985 07 |
| Precision of location | Accurate to within 1 minute (~1 mile) |
| Location comment | SW1/4 SEC. 33, T7S, R30E |
| Bibliographic reference | Richter, D.H., Houser, B.B., and Damon, P.E., 1983, Geologic Map Of The Guthrie Quadrangle, Graham and Greenlee Counties, Arizona: U.S. Geological Survey Miscellaneous Investigations Series Map I-1455. |
| (click for info) | |
| Geologic map unit | -109.281944, 32.776667 |
| Nearby scientific data | Find additional scientific data near this location |
| Age estimate | 23.1 ± 0.5Ma age of volcanism
|
|---|---|
| Type of analysis | conventional K-Ar NO ANALYTICAL DATA GIVEN
|
| Rock or mineral analyzed | biotite |
| Analytical details | |
| Lab sample ID | I |
| Decay constants | 4.962E-04, 0.581E-04, 1.1167E-04 |
| Comments | BIOTITE AND SANIDINE GAVE CONCORDANT AGES. |