Paleogeography during deposition of upper unit, Beavertail conglomerate and related units, central Arizona

Tertiary Paleogeography and Tectonic History, Central Arizona

Images and text modified from a poster session presented to the Annual Meeting of the Geological Society of America, Boston, Nov. 2001 by Travis Loseke and Ron Blakey, Department of Geology, NAU.


The images and text presented here show the paleogeography and tectonic evolution of central Arizona during the Tertiary. Emphasis is on an evolving Oligocene to Miocene drainage system that documents the existence of the Mogollon Rim, the southern physiographic boundary of the Colorado Plateau. Our goal is to demonstrate the evolution of Tertiary stream systems in relation to complex, dynamic, tectonic events in the Southwest including the Laramide orogeny, Cenozoic core complexes, Basin and Range Faulting, and Cenozoic volcanism. The images were prepared by placing various stratigraphic, tectonic, and sedimentologic data on a base map and then overlying more detailed landforms such as mountains,plateaus, rivers, volcanoes, and lowlands. The data was then painted in Photoshop 5.5, mostly by cloning topography from digital elevation maps.

Outline of Presentation
  • Abstract
  • General Geologic Data
  • Middle Tertiary Stream Deposits, Outcrop Photos
  • Paleogeography and Geologic History
  • References

    General Geology of Sedona and Verde Valley

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