Organ Pipe Cactus National Monument, Arizona
Dodge NN. 1964. Organ Pipe Cactus National Monument, Arizona. United States National Park Service Natural History Handbook. No. 6. United States Department of Interior. Washington, DC
This handbook describes for the layman the scenery, animal life, and vegetation of the area. Geologically, the Monument is a portion of the Sonoran Desert in the Basin and Range physiographic province, with the block-faulted Ajo and Growler Ranges enclosing valleys filled with miscellaneous alluvial deposits, alluvial fans, and bajadas. Rock formations range from Precambrian through Quaternary, with the Cardigan Gneiss the oldest and alluvial fill the youngest. Extensive volcanism during the Tertiary period produced the andesitic tuffs and breccias and lava flows that now compose most of the major mountain ranges. A short glossary of terms and a detailed list of the common and scientific names of plants and animals in the area are included. Illus. (map, b/w photos)
- Type
- Published Report
- Authors
- Dodge, Natt
- Date of Issue
- 1964
- Publisher
- United States Department of Interior
- Units
- ORPI
- Keywords
- Animals, bajadas, Checklist, Faults (Geologic), Geology, Lava, Sonoran Desert, Vegetation, Volcanism