Structure sections of Caballo Mountains: undifferentiated tertiary and quaternary rocks (TQ), Mesaverde formation (Kmv), Mancos shale (Km), Dakota group (Kd), San Andres formation (Ps), Yeso formation (Py), Abo formation (Pa), Magdalena group (Cm), Pecha formation (Dp), Montoya group and Fusselman dolomite (OS), El paso group and bliss formation (EO), precambrian granite, gneiss, and schist (PE), basalt dikes (Tib), and rhyolite dikes (Tir)