GEOROC Sample Information
Location
Latitude 4.895 | Longitude -75.323
ANDEAN ARC / NORTHERN ANDEAN VOLCANIC ZONE / COLOMBIA / NEVADO DEL RUIZ
EAST OF ARENAS CRATER, NOVEMBER 13, 1985 ERUPTION, BASE OF CALVACHE SECTION MC-1
CONVERGENT MARGIN
Reference
CALVACHE M. L. V.
PYROCLASTIC DEPOSITS OF THE NOVEMBER 13, 1985 ERUPTION OF NEVADO DEL RUIZ VOLCANO, COLOMBIA
J. VOLCANOL. GEOTHERM. RES. 41 [1990] 67-78
Sample Name: ML-81
Sample Information
PUMICE / PUMICE
OUTCROP
Sample Age Information
HOLOCENE
11/13/1985 eruption
Chemistry (and, if given, analytical ages)
Analyzed: VOLCANIC GLASS
| AL2O3 | 16.25 WT% |
| CAO | 3.52 WT% |
| FEOT | 3.83 WT% |
| K2O | 3.59 WT% |
| MGO | 1.33 WT% |
| NA2O | 3.81 WT% |
| P2O5 | 0.3 WT% |
| SIO2 | 66.63 WT% |
| TIO2 | 0.69 WT% |
Analyzed: VOLCANIC GLASS
| AL2O3 | 16.42 WT% |
| CAO | 4.31 WT% |
| FEOT | 3.99 WT% |
| K2O | 3.2 WT% |
| MGO | 1.53 WT% |
| NA2O | 3.98 WT% |
| P2O5 | 0.31 WT% |
| SIO2 | 64.59 WT% |
| TIO2 | 0.86 WT% |
Analyzed: VOLCANIC GLASS
| AL2O3 | 15.79 WT% |
| CAO | 4.28 WT% |
| FEOT | 4.08 WT% |
| K2O | 3.51 WT% |
| MGO | 1.5 WT% |
| NA2O | 3.93 WT% |
| P2O5 | 0.21 WT% |
| SIO2 | 65.55 WT% |
| TIO2 | 0.82 WT% |
Analyzed: VOLCANIC GLASS
| AL2O3 | 16.27 WT% |
| CAO | 3.77 WT% |
| FEOT | 4.18 WT% |
| K2O | 3.29 WT% |
| MGO | 1.55 WT% |
| NA2O | 3.94 WT% |
| P2O5 | 0.29 WT% |
| SIO2 | 64.62 WT% |
| TIO2 | 0.92 WT% |