Sample P-18A

NavDat sample number 19751 · TRACHYTE

Sample

Sample ID	P-18A
Rock name	TRACHYTE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	28.33
Longitude	-107.87
Location	Tomochic caldera
State / province	CHIHUAHUA
Formation	pinto lava

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
30.2		29.6	30.8

Analyses

No chemical analyses are stored for this sample.

References

Wark, D A; Kempter, K A; McDowell, F W (1990) Evolution of waning, subduction-related magmatism, northern Sierra Madre Occidental, Mexico. Geological Society of America Bulletin, vol.102, no.11, pp.1555-1564, Nov 1990 doi:10.1130/0016-7606(1990)102<1555:EOWSRM>2.3.CO;2