Monthly Archives: September 2019

I had originally planned to take some friends to see Arroyo del Cobre this Saturday morning, but they are closing on a house this week and need the time to make preparations. Their priorities are in the right place, of course, but that leaves me needing a Plan B. The...Read more

The forecast was for a gorgeous Saturday, and those are not to be wasted. I briefly considered hiking one of the trails from St. Peter’s Dome, but those typically remain open until January. On the other hand, the usual back country season on the Valles Caldera preserve ends in October,...Read more

A couple of months ago I went hunting for xenoliths in the Cieneguilla Basanite, and came across a somewhat puzzling dike in a road cut. So Friday I took time while returning from Albuquerque to visit the area again and take a longer look. First, some background. Don’t worry; the...Read more

The long weekend gave me opportunity for three short wanderlusts, whose common feature was the presence of faulting. Friday I planned to visit a hydrothermal breccia pipe shown on the geologic map at the north end of Aspen Ridge. Aspen Ridge is the easternmost of the north-south ridges that form...Read more