Brian Romans:
cross-cutting intrusions
Brian Romans:
lechuguilla and prickly pear
Brian Romans:
nonconformity in the Franklin Mts
Brian Romans:
Western Escarpment of Guadalupe Mts
Brian Romans:
fusulinid fossils
Brian Romans:
Permian Reef Trail
Brian Romans:
ancient basin margin
Brian Romans:
sponge fossils
Brian Romans:
speleothem deposits
Brian Romans:
plane- and ripple-laminated turbidites
Brian Romans:
Western Escarpment of the Guadalupe Mts
Brian Romans:
ripples in gypsum sand
Brian Romans:
zoophycus
Brian Romans:
Intersection of zircon and mountain view