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Sample PED-23-59

NavDat sample number 3998 · DACITE

Sample

Sample IDPED-23-59
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

Latitude32.4
Longitude-111.5
State / provinceArizona

Age

Age (Ma)ErrorMinMaxGeologic ageDated by
59 56 62

Analyses

No chemical analyses are stored for this sample.

References