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Sample RM-3-63

NavDat sample number 3997 · DACITE

Sample

Sample IDRM-3-63
Rock nameDACITE
Rock typeVOLCANIC
CompositionFELSIC
MaterialIGNEOUS
CommentAccording to Mauger and others 1965, the geologic relation of the Silver Bell Mountains show that the volcanic rocks nos. 8, 9, 9a are older than the monzonite nos. 3, 5, 7 which are dated as 65.9 my, 66.3 my, and 67.1 respectively, and they suggest that argon loss is responsible for the anomalous younger dates.

Location

Latitude32.3833
Longitude-111.483
State / provinceArizona

Age

Age (Ma)ErrorMinMaxGeologic ageDated by
56.7 53.9 59.5

Analyses

No chemical analyses are stored for this sample.

References