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Summary

Geochronologic sample location with analysis. Results summary: KA-biot:19.5+/-0.4; Location: Tuff is deposited on basal conglomerate overlying Precambrian Oracle granite. Lat, long more likely 33 01'37'', 111 11' 34''; this puts location on tuff outcrop next to road.. Collected by: W. Rehrig/CONOCO Minerals Arizona, Donnelly Wash area (quad sheet NORTH BUTTE); Citation: Damon et al., 1996; AZGS OFR 96-18; Sample description: Crystal welded tuff, dacitic (?) compostion. Sample represents the first tuffaceous volcanism of intermediate compostion in the Superior-Ray Region

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Loaded from XML file on Mon Oct 05 11:44:12 MDT 2009

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Type Scheme Key
sourceSystem CSC 10097159

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