Outcrop or artificial surface exposure, Tuff
| Geographic location |
-116.647222, 40.1625
116°
38'
50"
W,
40°
9'
45"
N
Lander county,
NV
Cortez
1:62,500 scale map quadrangle
Accurate to within 1 minute (~1 mile)
NORTH END OF TOIYABE RANGE
|
|---|---|
| Source of sample | Outcrop or artificial surface exposure |
| Rock name | Tuff |
| Description | CAETANO TUFF |
| Laboratories | Yale |
| Compiler name | Emsing, L.L. |
| Date compiled | 1977 08 |
| Precision of location | Accurate to within 1 minute (~1 mile) |
| Location comment | NORTH END OF TOIYABE RANGE |
| Bibliographic reference | Armstrong, R.L., 1970, Geochronology Of Tertiary Igneous Rocks, Eastern Basin and Range Province, Western Utah, Eastern Nevada, and Vicinity, U.S.A.: Geochimica et Cosmochimica Acta, v. 34, p. 203-232 |
| (click for info) | |
| Geologic map unit | -116.647222, 40.1625 |
| Nearby scientific data | Find additional scientific data near this location |
| Age estimate | 31.34 ± 0.6Ma age of volcanism
|
|---|---|
| Type of analysis | conventional K-Ar DUPLICATE K ANALYSES
|
| Rock or mineral analyzed | biotite 7% CHLORITE
|
| Analytical details | |
| Lab sample ID | 117 |
| Decay constants | 4.72E-04, 0.584E-04, 1.19E-04* |
| K2O concentration | 8.35 % |
| Radiogenic 40Ar concentration | 3.8 |
| Radiogenic Ar | 51 % |