← Search
Sample BS-1B
NavDat sample number 5007 · BASALT
Sample
| Sample ID | BS-1B |
|---|
| Rock name | BASALT |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | MAFIC |
|---|
| Material | IGNEOUS |
|---|
| Collected by | M.L. Silberman, U.S. Geological Survey |
|---|
| Comment | This sample was treated with bromoform and phosphoric acid. It has better radiogenic argon content than the untreated sample, and it is the same age within analytical uncertainty. This treatment did not appear to be as effective in reducing atmospheric argon content as the HF and HNO3 method. Neither appears to affect the age of the samples. |
|---|
Location
| Latitude | 40.3467 |
|---|
| Longitude | -117.297 |
|---|
| Location | Lander County |
|---|
| State / province | Nevada |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 1.4 |
|
1.26 |
1.54 |
|
M.L. Silberman, U.S. Geological Survey |
Analyses
No chemical analyses are stored for this sample.
References
- Morton, Janet L. and Silberman, Miles L. of the U.S. Geological Survey, Menlo Park; Bonham, H.F. and Garside, Larry J. of the Nevada Bureau of Mines and Geology, Reno; and Noble, Donald C. of the Michigan Technological University, Houghton (1977) K-AR AGES OF VOLCANIC ROCKS, PLUTONIC ROCKS, AND ORE DEPOSITS IN NEVADA AND EASTERN CALIFORNIA - DETERMINATIONS RUN UNDER THE USGS-NBMG COOPERATIVE PROGRAM.
