Sample COMP-1

NavDat sample number 51530 · TUFF

Sample

Sample ID	COMP-1
Rock name	TUFF
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	Silicic

Location

Latitude	21.0482
Longitude	-104.677
Location	Mexico
State / province	Nayarit

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
4.57		4.56	4.58

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	72.5		WT%	ICPMS
TIO2	0.43		WT%	ICPMS
AL2O3	13.8		WT%	ICPMS
FE2O3T	3.04		WT%	ICPMS
MNO	0.13		WT%	ICPMS
MGO	0.28		WT%	ICPMS
CAO	0.53		WT%	ICPMS
NA2O	5.05		WT%	ICPMS
K2O	4.12		WT%	ICPMS
P2O5	0.1		WT%	ICPMS
TOTAL	100		WT%	ICPMS
LOI	2.09		WT%	ICPMS
BA	1155		PPM	ICPMS
SR	108		PPM	ICPMS
Y	49		PPM	ICPMS
ZR	351		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