that rose due to faulting along the Great American Rift, and they tilted as they rose, so that the Albuquerque side is steep and the East Mountain side is gentle. The rock that was exposed is pink granite and the mountains are capped with Pennsylvanian limestone. The same Limestone that is a mile above Albuquerque on Sandia Peak is about a mile below the surface in the Rio Grande Valley. Here is the mountain front looking south from the Tram. In the foreground you can see pressure ridges that were created by the mountains going up.
After coming down the mountain on the Tram, it was off for Pizza and a movie. We saw Eregon together. The perfect ending to a very good day. Next morning the cousins flew back to Illinois.
It is amazing how much was learned during the two field trips. The history of Old Town. The geology of the Sandias. And what a perfect beginning to our new unit on Earth Science.