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

NOT GIVEN / PUMICE
OUTCROP

Sample Age Information

11/13/1985 eruption

Chemistry (and, if given, analytical ages)

Analyzed: VOLCANIC GLASS

AL2O316.25 WT%
CAO3.52 WT%
FEOT3.83 WT%
K2O3.59 WT%
MGO1.33 WT%
NA2O3.81 WT%
P2O50.3 WT%
SIO266.63 WT%
TIO20.69 WT%

Analyzed: VOLCANIC GLASS

AL2O316.42 WT%
CAO4.31 WT%
FEOT3.99 WT%
K2O3.2 WT%
MGO1.53 WT%
NA2O3.98 WT%
P2O50.31 WT%
SIO264.59 WT%
TIO20.86 WT%

Analyzed: VOLCANIC GLASS

AL2O315.79 WT%
CAO4.28 WT%
FEOT4.08 WT%
K2O3.51 WT%
MGO1.5 WT%
NA2O3.93 WT%
P2O50.21 WT%
SIO265.55 WT%
TIO20.82 WT%

Analyzed: VOLCANIC GLASS

AL2O316.27 WT%
CAO3.77 WT%
FEOT4.18 WT%
K2O3.29 WT%
MGO1.55 WT%
NA2O3.94 WT%
P2O50.29 WT%
SIO264.62 WT%
TIO20.92 WT%