Laserfiche WebLink
1. Travertine ledge: calcium carbonate ledge formed from seepage through limestone. <br />2. Rock ledge: a bed of several layers projecting in a steep-like manner. <br />3. Alluvial fan: a cone shaped deposit of alluvium created by the path of a stream when it <br />meets a level plane or another stream. <br />4. Rock face: a vertical or almost vertical wall of rock. <br />5. Talus slope: a collection of fallen disintegrated material which has formed a slope at the <br />base of a steeper declivity. <br />6. Cobble bar: a bar or ridge of rounded rock fragments between 76 and 256 mm in <br />diameter, built up to or near the surface of the water by river currents in a river. <br />7. Gravel bar: a bar or ridge of rounded rock fragments between 4.6 to 76 mm in diameter, <br />built up to or near the surface of the water by river currents. <br />8. Sand bar: a bar or ridge of rock fragments between 0 and 4.6 mm in diameter, built up <br />to or near the surface of the water by river currents. <br />9. Boulder: a large rounded block of stone one square meter or larger, lying on the surface <br />of the ground, or sometimes embedded in loose soil, that has been transported from its <br />place of origin. <br />VEGETATION: <br />1. Native vegetation (OHWZ): apache plume (Fallugia paradoxa), redbud (Cercis <br />occidentalis), hackberry (Celtic retculata), honey mesquite (Prosopis'glandulosa var. <br />torreyanna), accia (Accia greggii), and in the lower reaches of the Canyon, creosote bush <br />(larrea divaricata). <br />2. Exotic vegetation: (new high water zone): desert broom (Baccharis sp.), willows (Salix <br />sp.), saltseder (Tamarix chinensis), and arrowweed (Pluchea sericca). <br />3. Bare soil: soil that is not currently supporting plant life. <br />4. Seep vegetation: vegetation associated with a spring. <br />5. Sparsely vegetated slope: a slope area of soil and rock supporting less than 5% vegetation <br />cover. <br />39