Outcrop or artificial surface exposure, Granodiorite
| Geographic location |
-117.2, 40.629167
117°
12'
"
W,
40°
37'
45"
N
Lander county,
NV
Antler Peak
1:62,500 scale map quadrangle
Accurate to within 1 minute (~1 mile)
ANTLER PEAK (BATTLE MOUNTAIN) RANGE; SW1/4 SEC. 24, T32N, R42E; ELEVATION 6500 FT. ALONG TRENTON CANYON
|
|---|---|
| Source of sample | Outcrop or artificial surface exposure |
| Rock name | Granodiorite |
| Description | TRENTON CANYON STOCK; MEDIUM-GRAINED, BIOTITE-HORNBLENDE GRANODIORITE |
| Laboratories | USGS Menlo Park |
| Compiler name | Nichols, S.L. |
| Date compiled | 1978 02 |
| Precision of location | Accurate to within 1 minute (~1 mile) |
| Location comment | ANTLER PEAK (BATTLE MOUNTAIN) RANGE; SW1/4 SEC. 24, T32N, R42E; ELEVATION 6500 FT. ALONG TRENTON CANYON |
| Bibliographic reference | Silberman, M.L., and Mckee, E.H., 1971, K-Ar Ages Of Granitic Plutons In North-Central Nevada: Isochron/West, No. 1, p. 15-32. |
| (click for info) | |
| Geologic map unit | -117.2, 40.629167 |
| Nearby scientific data | Find additional scientific data near this location |
| Age estimate | 89.32 ± 1.7Ma age of intrusion
|
|---|---|
| Type of analysis | conventional K-Ar |
| Rock or mineral analyzed | biotite 3% CHLORITE
|
| Analytical details | |
| Lab sample ID | 17. USGS(M)-MB25 |
| Decay constants | 4.72E-04, 0.585E-04, 1.19E-04* |
| K2O concentration | 7.38 % |
| Radiogenic 40Ar concentration | 9.729 |
| Radiogenic Ar | 79 % |