Sample IXT-67

NavDat sample number 51532 · RHYOLITE

Sample

Sample ID	IXT-67
Rock name	RHYOLITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	Lava Flow

Location

Latitude	21.2423
Longitude	-104.609
Location	Mexico
State / province	Nayarit

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
4.72		4.68	4.76

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	75.3		WT%	ICPMS
TIO2	0.21		WT%	ICPMS
AL2O3	12.5		WT%	ICPMS
FE2O3T	3.42		WT%	ICPMS
MNO	0.05		WT%	ICPMS
MGO	0.01		WT%	ICPMS
CAO	0.07		WT%	ICPMS
NA2O	3.93		WT%	ICPMS
K2O	4.48		WT%	ICPMS
P2O5	0.02		WT%	ICPMS
TOTAL	100		WT%	ICPMS
LOI	1.86		WT%	ICPMS
BA	135		PPM	ICPMS
SR	2		PPM	ICPMS
Y	142		PPM	ICPMS
ZR	639		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