GEOROC Sample Information
Location
Latitude 4.895 | Longitude -75.323
ANDEAN ARC / NORTHERN ANDEAN VOLCANIC ZONE / COLOMBIA / NEVADO DEL RUIZ
RIO AZUFRADO
CONVERGENT MARGIN
Reference
GOURGAUD A.,THOURET J.-C.
MAGMA MIXING AND PETROGENESIS OF THE 13 NOVEMBER 1985 ERUPTIVE PRODUCTS AT NEVADO DEL RUIZ (COLOMBIA)
J. VOLCANOL. GEOTHERM. RES. 41 [1990] 79-96
Sample Name: AG20
Sample Information
ANDESITE / WHITE PUMICE
OUTCROP
Sample Age Information
HOLOCENE
11/13/1985 eruption
Chemistry (and, if given, analytical ages)
Analyzed: WHOLE ROCK
| AL2O3 | 15.9 WT% |
| CAO | 5 WT% |
| FE2O3 | 5.5 WT% |
| H2OM | 0.13 WT% |
| H2OP | 0.16 WT% |
| K2O | 2.8 WT% |
| MGO | 3.5 WT% |
| MNO | 0.08 WT% |
| NA2O | 3.85 WT% |
| SIO2 | 63 WT% |
| TIO2 | 0.9 WT% |