ELT 9a

Elevation Range

Minimum:

915 m

Minimum in ft:

3003 ft

Maximum:

1080 m

Maximum in ft:

3544 ft

Median:

974 m

Median in ft:

3196 ft

Soil Summary:

shallow and moderately deep to granite or granite like rocks; extremely gravelly loam and sandy loam surface layers over very and extremely gravelly loam and extremely gravelly sandy clay subsurface layers; both no lime and limy; moderate development (lime and clay accumulations); dominated by Pima County soil survey map units 59 (Pantano –Rock outcrop complex, 25 to 60 percent slopes) and 58 (Pantano-Granolite complex, 5 to 25 percent slopes. These units comprise 73% and 23% of the LTA, respectively

Geologic Materials:

alluvium and residuum associated with KJb, heterogeneous granodioritic rocks of the north White Tank Mountains (Xgd, Xfg, Xgm, TXm), Pleistocene piedmont alluvium (Qi2, Qi, Qi1, Qi2r), and Pleistocene river terraces (Qyr) which comprise 75%, 21%, 3% and 1% of the unit, respectively

Landforms:

moderately to finely dissected, weakly to moderately incised fan and pediment surfaces

Land Type Association: LTA 9

Ecological Unit: Upper Sonoran desert on hills and mountains of sedimentary, metasedimentary, and extrusive rocks

Map with the ELT 9a polygon highlighted.

ELT 9a

Catalina