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Cholla and Granite Mountains with the Mazzies on left and Ord middle background.
According to Roadside Geology of Arizona by Halka Chronic, the McDowells are “rocky hills (that) protrude through the gravel.” the McDowells are mostly composed of Miocene stream deposits. Miocene is the fourth epoch of the Tertiary Period in the Cenozoic Era (between 5 million and 24 million years ago.)
According to Roadside Geology of Arizona by Halka Chronic, the McDowells are “rocky hills (that) protrude through the gravel.” the McDowells are mostly composed of Miocene stream deposits. Miocene is the fourth epoch of the Tertiary Period in the Cenozoic Era (between 5 million and 24 million years ago.)