Organ Pipe Cactus National Monument established 13 April 1937
Organ Pipe Cactus National Monument, home to the splendid organ pipe cactus, was established on 13 May 1937.
Recent AZGS publications focusing on the geology of the monument, include:
- Bezy, J.V., Gutmann, J. and Haxel, G.B., 2000, A Guide to the Geology of Organ Pipe Cactus National Monument and the Pinacate Biosphere Reserve. Arizona Geological Survey Down-to-Earth #9, 66 p.
The following geologic maps include the underlying GIS data.
- Pearthree, P.A., Youberg, A. and Young, J.J., 2020, Geologic Map of the Tillotson Peak 7 1/2' Quadrangle and part of the Mount Ajo 7 1/2 Quadrangle, Organ Pipe Cactus National Monument, Pima County, Arizona v.2. Arizona Geological Survey DGM-73, one map sheet, 1:24,000 map scale.
- Young, A. and Pearthree, P.A., 2020, Geologic Map of Parts of the Lukeville, Diaz Peak, South of Lukeville and Blankenship Wells 7 1/2 Quadrangles, Organ Pipe Cactus National Monument, Pima County, Arizona v.2. Arizona Geological Survey DGM-74, one map sheet at 1:24,000 map scale.
- Young, J.J and Pearthree, P.A., 2020, Geologic Map of the Armenta Well 7 1/2' Quadrangle and part of the Gunsight 7 1/2' Quadrangle, Organ Pipe Cactus National Monument, Pima County, Arizona v.2. Arizona Geological Survey DGM-72, 1 map sheet, 1:24,000 map scale.
Posted 4/13/2022 fmc
