Bone Springs
Formation
Dark basin limestone
(Photos taken by M. Vanden Berg)
Thin beds with chert nodules,
Bone Springs Canyon, Guadalupe Mountians. Chert is derived from
siliceous sponge spicules.
Angular unconformities in the
Bone Springs Formation, Bone Springs Canyon, Guadalupe Mountains.
Maybe due to slumping or tectonics.
Last updated 9/10/01
