Sample 88a
NavDat sample number 36801 · MINETTE
Sample
| Sample ID | 88a |
|---|---|
| Rock name | MINETTE |
| Rock type | VOLCANIC |
| Composition | EXOTIC |
| Material | IGNEOUS |
Location
| Latitude | 37.6544 |
|---|---|
| Longitude | -102.536 |
| Location | Two Buttes |
| State / province | Colorado |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 36.9 | 36.3 | 37.5 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 47.6 | WT% | ICPAES | |
| MGO | 16.4 | WT% | ICPAES | |
| TIO2 | 1.01 | WT% | ICPAES | |
| AL2O3 | 9.5 | WT% | ICPAES | |
| FE2O3 | 2.66 | WT% | ICPAES | |
| FEO | 5.84 | WT% | TIT | |
| MNO | 0.14 | WT% | ICPAES | |
| CAO | 8.52 | WT% | ICPAES | |
| NA2O | 1.82 | WT% | ICPAES | |
| K2O | 3.81 | WT% | ICPAES | |
| P2O5 | 0.38 | WT% | ICPAES | |
| CO2 | 0.18 | WT% | UNKNOWN | |
| H2O_PLUS | 1.22 | WT% | PENFIELD | |
| H2O_MINUS | 0.2 | WT% | PENFIELD | |
| RB | 100 | PPM | XRF | |
| SR | 666 | PPM | XRF | |
| SM | 9.16 | PPM | INAA | |
| ND | 39 | PPM | INAA | |
| TH | 5.5 | PPM | INAA | |
| NI | 543 | PPM | XRF | |
| CR | 936 | PPM | XRF | |
| Y | 22.5 | PPM | XRF | |
| ZR | 150 | PPM | XRF | |
| NB | 11.7 | PPM | XRF | |
| BA | 990 | PPM | XRF | |
| LA | 36.1 | PPM | INAA | |
| CE | 79.4 | PPM | INAA | |
| EU | 2.4 | PPM | INAA | |
| TB | 1.1 | PPM | INAA | |
| YB | 1.92 | PPM | INAA | |
| LU | 0.28 | PPM | INAA | |
| HF | 4.07 | PPM | INAA | |
| TA | 0.73 | PPM | INAA | |
| ND143_ND144 | 0.511575 | MS | ||
| SR87_SR86 | 0.70722 | MS |
References
- Davis, Linda L; Smith, Douglas; McDowell, Fred W; Walker, Nicholas W; Borg, Lars E (1996) Eocene potassic magmatism at Two Buttes, Colorado, with implications for Cenozoic tectonics and magma generation in the Western United States. Geological Society of America Bulletin. 108; 12, Pages 1567-1579. 1996. . doi:10.1130/0016-7606(1996)108<1567:EPMATB>2.3.CO;2