Sample HOS-4

NavDat sample number 51539 · TUFF

Sample

Sample ID	HOS-4
Rock name	TUFF
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	Silicic

Location

Latitude	21.021
Longitude	-104.224
Location	Mexico
State / province	Jalisco

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
20.4		20.3	20.5

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	73.9		WT%	ICPMS
TIO2	0.47		WT%	ICPMS
AL2O3	14.3		WT%	ICPMS
FE2O3T	2.48		WT%	ICPMS
MNO	0.07		WT%	ICPMS
MGO	0.69		WT%	ICPMS
CAO	0.8		WT%	ICPMS
NA2O	3.47		WT%	ICPMS
K2O	3.74		WT%	ICPMS
P2O5	0.1		WT%	ICPMS
TOTAL	100		WT%	ICPMS
LOI	3.2		WT%	ICPMS
BA	1492		PPM	ICPMS
SR	184		PPM	ICPMS
Y	30		PPM	ICPMS
ZR	335		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