Glenwoody Formation

Glenwoody Formation
Glenwoody Formation
Stratigraphic range:
	Quartzite of the Glenwoody Formation at the base of the Pilar Cliffs, New Mexico, United States
Type	Formation
Unit of	Vadito Group
Underlies	Hondo Group
Overlies	lower Vadito Group
Thickness	300 m (980 ft)
Lithology
Primary	Quartz–muscovite schist
Other	Quartzite
Location
Coordinates	36°15′57″N 105°47′44″W / 36.2659°N 105.7956°W
Region	Picuris Mountains, New Mexico
Country	United States
Type section
Named for	Glenwoody mining camp
Named by	Bauer and Williams
Year defined	1989
	Glenwoody Formation (the United States) Glenwoody Formation (New Mexico)

The Glenwoody Formation is a geological formation that is exposed in the cliffs southeast of the Rio Grande Gorge near the town of Pilar and in a few other locations in the Picuris Mountains.^[1] Its minimum age from detrital zircon geochronology is 1.693 Mya, corresponding to the Statherian period.