GEOROC Sample Information

Location
Latitude 37 | Longitude 138
HONSHU ARC / CENTRAL HONSHU ARC / HONSHU / MYOKO
MYOKO VOLCANO GROUP
CONVERGENT MARGIN

Reference

SAKUYAMA M.

PETROLOGICAL STUDY OF THE MYOKO AND KUROHIME VOLCANOES, JAPAN: CRYSTALLIZATION SEQUENCE AND EVIDENCE FOR MAGMA MIXING

J. PETROL. 22 [1981] 553-583

Sample Name: MK618-1

Sample Information

ANDESITE / PORPHYRITIC TEXTURE
OUTCROP

Sample Age Information

QUATERNARY


Chemistry (and, if given, analytical ages)

Analyzed: WHOLE ROCK

AL2O318.74 ± 0.8 WT%
CAO7.47 ± 0.2 WT%
FE2O3T7.31 ± 0.5 WT%
K2O1.57 ± 0.08 WT%
MGO3.11 ± 0.4 WT%
MNO0.14 ± 0.02 WT%
NA2O2.3 ± 0.18 WT%
P2O50.25 ± 0.06 WT%
SIO259.55 ± 1.4 WT%
TIO20.59 ± 0.05 WT%