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Sample PR 13-88
NavDat sample number 42398 · GRANODIORITE
Sample
| Sample ID | PR 13-88 |
|---|
| Rock name | GRANODIORITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 37.9908 |
|---|
| Longitude | -122.964 |
|---|
| State / province | California |
|---|
| Location comment | porphyritic granodiorite of Point Reyes |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 60 |
|
83 |
87 |
|
|
Analyses
WHOLE ROCK
| Item | Value | Std. dev. | Unit | Method |
|---|
| RB | 127 | | PPM | EDXRF |
| SR | 413 | | PPM | EDXRF |
| RB_SR | 0.308 | | | MS |
| RB87_SR86 | 0.89 | | | MS |
| SR87_SR86 | 0.7086 | | | MS |
| SR87_SR86_INITIAL | 0.70775 | | | MS |
| RB | 647.4 | | PPM | MS-ID |
| SR | 15.7 | | PPM | MS-ID |
| RB_SR | 41.27 | | | MS-ID |
| RB87_SR86 | 120.99 | | | MS-ID |
| SR87_SR86 | 0.84503 | | | MS |
| SR87_SR86_INITIAL | 0.70783 | | | MS |
| RB | 13.2 | | PPM | MS-ID |
| SR | 55.1 | | PPM | MS-ID |
| RB_SR | 0.239 | | | MS-ID |
| RB87_SR86 | 0.693 | | | MS-ID |
| SR87_SR86 | 0.70838 | | | MS |
| SR87_SR86_INITIAL | 0.70775 | | | 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.
