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Sample PR 7C-92
NavDat sample number 42388 · PEGMATITE
Sample
| Sample ID | PR 7C-92 |
|---|
| Rock name | PEGMATITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 38.166 |
|---|
| Longitude | -122.952 |
|---|
| State / province | California |
|---|
| Location comment | Tonalite and granodiorite of McClure's and Kehoe Beaches |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 109.6 |
|
98.64 |
120.56 |
|
|
Analyses
WHOLE ROCK
| Item | Value | Std. dev. | Unit | Method |
|---|
| RB | 208 | | PPM | EDXRF |
| SR | 238 | | PPM | EDXRF |
| RB_SR | 0.873 | | | MS |
| RB87_SR86 | 2.527 | | | MS |
| SR87_SR86 | 0.71051 | | | MS |
| SR87_SR86_INITIAL | 0.70662 | | | MS |
References
- Kistler, R W; Champion, D E (2001) Rb-Sr whole-rock and mineral ages, K-Ar, (super 40) Ar/ (super 39) Ar, and U-Pb mineral ages, and strontium, lead, neodymium, and oxygen isotopic compositions for granitic rocks from the Salinian Composite Terrane, California. Open-File Report - U. S. Geological Survey. 2001.
