← Search

Sample 491

NavDat sample number 130136 · ANDESITE

Sample

Sample ID491
Rock nameANDESITE
Rock typeVOLCANIC
CompositionINTERMEDIATE
MaterialIGNEOUS
Collected byBacon and Lanphere
CommentApplegate Peak, caldera wall 1.0km S of Sentinel Rk, basal flow

Location

Latitude42.9147
Longitude-122.063
State / provinceOregon

Age

Age (Ma)ErrorMinMaxGeologic ageDated by
0.231 0.221 0.241

Analyses

Whole rock

ItemValueStd. dev.UnitMethod
SIO262.5WT%XRF
K2O2.056WT%XRF

References