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Sample MB-485
NavDat sample number 51687 · IGNIMBRITE
Sample
| Sample ID | MB-485 |
|---|
| Rock name | IGNIMBRITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 48.8803 |
|---|
| Longitude | -121.529 |
|---|
| Location | Hannegan Peak |
|---|
| State / province | Washington |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 3.722 |
|
3.702 |
3.742 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 79.2 | | WT% | XRF |
| TIO2 | 0.15 | | WT% | XRF |
| AL2O3 | 11.66 | | WT% | XRF |
| FEO | 0.96 | | WT% | XRF |
| MNO | 0.05 | | WT% | XRF |
| MGO | 0.19 | | WT% | XRF |
| CAO | 0.4 | | WT% | XRF |
| NA2O | 3.76 | | WT% | XRF |
| K2O | 3.15 | | WT% | XRF |
| P2O5 | 0.04 | | WT% | XRF |
References
- Tucker, David; Hildreth, Wes; Ullrich, Tom; Friedman, Richard (2007) Geology and complex collapse mechanisms of the 3.72 Ma HanneganCaldera, north Cascades, Washington, USA. Geological Society of America Bulletin, vol.119, no.3-4, pp.329-342,Apr 2007 doi:10.1130/B25904.1
