Sample A-168

NavDat sample number 58077 · RHYOLITE

Sample

Sample ID	A-168
Rock name	RHYOLITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	30.6
Longitude	-110.183
Location	Mesa Pedregosa
State / province	Sonora
Country	Mexico
Location comment	Arizpe-Bacanuchi

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
25.48		25.43	25.53

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	51.46		WT%	XRF
AL2O3	17.8		WT%	XRF
FE2O3	7.67		WT%	XRF
FEO	1.82		WT%	XRF
MGO	3.7		WT%	XRF
CAO	7.39		WT%	XRF
NA2O	3.66		WT%	XRF
K2O	2.11		WT%	XRF
TIO2	1.47		WT%	XRF
P2O5	0.56		WT%	XRF
MNO	0.15		WT%	XRF
LOI	2.11		WT%	XRF
BA	648		PPM	ICPMS
CE	79.47		PPM	ICPMS
ND	38.19		PPM	ICPMS
SM	7.74		PPM	ICPMS
EU	2.28		PPM	ICPMS
YB	2.71		PPM	ICPMS
TH	5		PPM	ICPMS
RB	38		PPM	ICPMS
SR	976		PPM	ICPMS
Y	28		PPM	ICPMS
NB	10		PPM	ICPMS
ZR	928		PPM	ICPMS

References

Gonzalez Leon, Carlos M; McIntosh, William C; Lozano-Santa Cruz,Rufino; Valencia-Moreno, Martin; Amaya-Martinez, Ricardo; Rodriguez-Castaneda, Jose Luis (2000) Cretaceous and Tertiary sedimentary, magmatic, and tectonic evolutionof north-central Sonora (Arizpe and Bacanuchi quadrangles), NorthwestMexico. Geological Society of America Bulletin, vol.112, no.4, pp.600-610, Apr2000 doi:10.1130/0016-7606(2000)112<600:CATSMA>2.0.CO;2