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: AG19
Sample Information
ANDESITE / BLACK SCORIA
OUTCROP
Sample Age Information
HOLOCENE
11/13/1985 eruption
Chemistry (and, if given, analytical ages)
Analyzed: WHOLE ROCK
| AL2O3 | 15.6 WT% |
| CAO | 6.3 WT% |
| FE2O3 | 4.26 WT% |
| FEO | 2.2 WT% |
| H2OP | 0.04 WT% |
| K2O | 2.3 WT% |
| MGO | 5.8 WT% |
| MNO | 0.1 WT% |
| NA2O | 3.7 WT% |
| SIO2 | 59.7 WT% |
| TIO2 | 0.9 WT% |