Sample ETZ-22

NavDat sample number 51525 · RHYOLITE

Sample

Sample ID	ETZ-22
Rock name	RHYOLITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	Lava Flow

Location

Latitude	20.9637
Longitude	-104.086
Location	Mexico
State / province	Jalisco

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
3.4		3.37	3.43

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	77.2		WT%	ICPMS
TIO2	0.09		WT%	ICPMS
AL2O3	12.4		WT%	ICPMS
FE2O3T	1.2		WT%	ICPMS
MNO	0.05		WT%	ICPMS
MGO	0.04		WT%	ICPMS
CAO	0.29		WT%	ICPMS
NA2O	4.14		WT%	ICPMS
K2O	4.64		WT%	ICPMS
P2O5	0.02		WT%	ICPMS
TOTAL	100		WT%	ICPMS
LOI	0.38		WT%	ICPMS
BA	282		PPM	ICPMS
SR	16		PPM	ICPMS
Y	41		PPM	ICPMS
ZR	131		PPM	ICPMS

References

Frey, Holli M; Lange, Rebecca A; Hall, Chris M; Delgado-Granados,Hugo; Carmichael, Ian S E (2007) A Pliocene ignimbrite flare-up along the Tepic-Zacoalco Rift; evidencefor the initial stages of rifting between the Jalisco Block (Mexico)and North America. Geological Society of America Bulletin, vol.119, no.1-2, pp.49-64, Jan2007 doi:10.1130/B25950.1