Outcrop or artificial surface exposure, Metadiabase
| Geographic location |
-81.970278, 36.081667
81°
58'
13"
W,
36°
4'
54"
N
Avery county,
NC
Newland
1:24,000 scale map quadrangle
Accurate to within 1 second (~100 feet)
|
|---|---|
| Source of sample | Outcrop or artificial surface exposure |
| Rock name | Metadiabase |
| Description | Dikees, fine grained |
| Laboratories | University of North Carolina |
| Compiler name | Roland, R. |
| Date compiled | 1993 08 |
| Precision of location | Accurate to within 1 second (~100 feet) |
| Bibliographic reference | Goldberg, S.A., Butler, J.R., and Fullagar, P.D., 1986, The Bakersville Dike Swarm: geochronology and petrogenesis of late proterozoic basaltic magmatism in the southern Appalachian Blue Ridge: American Journal of Science, v. 286, p. 403-430. |
| (click for info) | |
| Geologic map unit | -81.970278, 36.081667 |
| Nearby scientific data | Find additional scientific data near this location |
| Age estimate | 734 ± 26Ma age of intrusion
|
|---|---|
| Type of analysis | 87Sr/86Sr-87Rb/86Sr isochron (whole rock) |
| Rock or mineral analyzed | whole rock |
| Analytical details | |
| Lab sample ID | B24 |
| Decay constants | 1.42E-05 |
| Initial 87Sr/86Sr | 0.70444 |
| Ratio 87Rb/86Sr | 0.2049 |
| Ratio 87Sr/86Sr | 0.70634 |
| Normal? | T |