PERMFILE48911

• Permit No: C1982055
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: SECTION 2.04 Environmental Resources
• Media Type: D
• Archive: No

• in figure 7.2-3 indicate other areas where ground water is relatively
shallow. Many of the springs in figure 7.2-3 are located at or near
the contact between the Poison Canyon-Cuchara and Trinidad-Vermejo-
Raton aquifers; most others are located on the slopes of volcanic-
capped mesas, along dikes and sills, and in the axial region of the
La Veta Syncline. The contact between the Poison Canyon-Cuchara
and Trinidad-Vermejo-Raton aquifers localizes spring flow because
ground water descending through loosely consolidated sandstone of
the ~-poison Canyon-Cuchara aquifer perches above tightly
cemented sandstone and siltstone of the piznT Trinidad - Vermejo-
Raton aquifer, Similarly, many springs are located on the slopes
of volcanic capped mesas where ground water descending through the
volcanic rocks perches at the contact with less permeable sedimentary
rocks. Dikes and sills cause springs to develop because the intrusive
rocks act as barriers to flow, forcing ground water to the surface.
Springs occur in the axial region of the La Veta Syncline because
ground water in shallow flow systems tends to flow down the dip
of permeable layers.
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