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New Mexico Bureau of Mines & Mineral Resources Bulletin 117
Geology of Carlsbad Cavern and other caves in the Guadalupe Mountains, New Mexico and Texas |
PLATES
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Plate 1—A—Breccia exposed in the north wall of the Guadalupe
Room, Carlsbad Cavern. A mudstone matrix fills the spaces between breccia
clasts. White material overlying parts of the breccia is a thin carbonate
crust. Photo Cyndi Mosch Seanor. B—Possible unconformity between the underlying light-tan cobble gravel and the overlying orange silt, Junction Room, Lower Cave, Carlsbad Cavern. A light-colored carbonate crust overlies the orange silt. Photo Cyndi Mosch Seanor. |
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Plate 2—A—Laminated silt, Lower Cave, Carslad Cavern.
Photo Cyndi Mosch Seanor. B—Brick-red silt, Big Room, Carlsbad Cavern. White layers are gypsum derived from overlying leached gypsum blocks. Deformation took place while the silt was still wet, and was possibly caused by a piece of breakdown which fell from the roof of the cave. Photo Ronal Kerbo. |
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Plate 3—A—Microfolded laminations in a gypsum block near the
Jumping Off Place, Big Room, Carlsbad Cavern. Photo Allan Hill. B—Slickensides on a gypsum block, second trail tunnel, Jumping Off Place, Big Room, Carlsbad Cavern. The light-colored gypsum to the right of the slickensides is part of an overgrowth crust. Photo Alan Hill. |
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Plate 4—A—Bat guano in a gypsum block, Big Room, Carlsbad
Cavern. The guano filtered down into a dissolved hole in the gypsum, and
then both the gypsum and guano were drilled and exposed by a drip tube.
Photo Ronal Kerbo. B—Silt banding in a gypsum rind, Pump Room, Carlsbad Cavern. Photo Ronal Kerbo. |
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Last Updated: 28-Jun-2007