GEOROC Sample Information

Location
Latitude -0.41 | Longitude -91.03
GALAPAGOS ISLANDS / ISABELA (ALBEMARLE) / ALCEDO
OCEAN ISLAND

Reference

GEIST D. J.,HOWARD K. A.,LARSON P. B.

THE GENERATION OF OCEANIC RHYOLITES BY CRYSTAL FRACTIONATION: THE BASALT-RHYOLITE ASSOCIATION AT VOLCAN ALCEDO, GALAPAGOS ARCHIPELAGO

J. PETROL. 36 [1995] 965-982

Sample Name: H29

Sample Information

GRANOPHYRE / MEDIUM-GRAINED TEXTURE / BLOCK
OUTCROP

Sample Age Information

No sample age information given.

Chemistry (and, if given, analytical ages)

Analyzed: WHOLE ROCK

D18O5.5 ‰SMOW
AL2O314.25 WT%
CAO1.85 WT%
FE2O3T3.96 WT%
K2O3.19 WT%
LOI0.89 WT%
MGO0.35 WT%
MNO0.1 WT%
NA2O5.26 WT%
P2O50.09 WT%
SIO269.22 WT%
TIO20.54 WT%
BA324 PPM
NB54 PPM
NI10 PPM
RB70 PPM
SR118 PPM
Y64 PPM
ZR598 PPM