Image of the Day — West - East Cross Section of the Placitas Quadrangle.

This West - East cross section of the northern part of the Sandia Mountains shows some of the complexity of of the rift margin in the Albuquerque basin. The Sandia Mountains are a classic rift-flank uplift formed by isostatic rebound following normal faulting along the Rio Grande rift.

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Open-file Geologic Map - 2: Geology of the Bernalillo and Placitas quadrangles, Sandoval County, New Mexico

Sean D. Connell, Steve M. Cather, Bradley Ilg, Karl E. Karlstrom, Barbara Menne, Mark Picha, Chris Andronicos, Adam S. Read, Paul W. Bauer, and Peggy S. Johnson, 1995, 1:24:000