geology

Geology of Tom's Thumb at Tom's Thumb Trailhead.  Enjoy a 90-minute walk near the Tom’s Thumb trailhead to learn about the geology we see around us.  Geology basics will be discussed as well as the processes that shaped the McDowells and nearby mountain ranges. We will talk about mineralogy, weathering processes and volcanism in Arizona […]

Geology Along the Campana Trail at Fraesfield Trailhead. This two-hour, leisurely-paced guided walk will highlight some of the geologic features visible from the Camino Campana Trail. We'll discuss the rocks, landscape, and geologic history with reference to how they influence the climate, ecology and human history of the region. No dogs please. Restrooms are available […]