Outcrop or artificial surface exposure, Schist
| Geographic location |
-165.373333, 64.565
165°
22'
24"
W,
64°
33'
54"
N
AK
Bendeleben
1:250,000 scale map quadrangle
Accurate to within 0.1 minute (~500 feet)
|
|---|---|
| Source of sample | Outcrop or artificial surface exposure |
| Rock name | Schist |
| Description | with qtz+chlorite+alb |
| Laboratories | University of British Columbia |
| Compiler name | Moscati, R. |
| Date compiled | 1992 04 |
| Precision of location | Accurate to within 0.1 minute (~500 feet) |
| Bibliographic reference | Armstrong, R.L., Harakal, J.E., Forbes, R.B., Evans, B.W., and Thurston, S.P., 1986, Rb-Sr and K-Ar study of metamorphic rocks of the Seward Peninsula and the southern Brooks Range, Alaska: Geological Society of America Memoir 164, p. 185-202. |
| (click for info) | |
| Geologic map unit | -165.373333, 64.565 |
| Nearby scientific data | Find additional scientific data near this location |
| Age estimate | (no age estimate specified) |
|---|---|
| Type of analysis | 87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock) |
| Rock or mineral analyzed | whole rock |
| Analytical details | |
| Lab sample ID | 80-93-1 |
| Decay constants | 1.42E-05 |
| Rubidium concentration | 42.5 ppm |
| Strontium concentration | 68.7 ppm |
| Initial 87Sr/86Sr | 0.708 |
| Ratio 87Rb/86Sr | 1.796 |
| Ratio 87Sr/86Sr | 0.7407 |
| Normal? | T |