Sample DS88081

NavDat sample number 35761 · TUFF

Sample

Sample ID	DS88081
Rock name	TUFF
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	37.7
Longitude	-107
Location	Cochetopa Park
State / province	Colorado

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
28		26	30

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
PB206_PB204	18.52			MS
PB207_PB204	15.598			MS
PB208_PB204	37.758			MS

References

Riciputi, Lee R; Johnson, Clark M; Sawyer, David A; Lipman, Peter W (1995) Crustal and magmatic evolution in a large multicyclic caldera complex; isotopic evidence from the central San Juan volcanic field. Journal of Volcanology and Geothermal Research. 67; 1-3, Pages 1-28. 1995. . doi:10.1016/0377-0273(94)00097-Z