Description

You’re invited to explore the scientific detective story in San Diego’s diverse mountains and deserts spanning over 200 million years.  This includes the expansive landscapes of Anza-Borrego Desert State Park which is rich with ancient geological wonders.   A Geological Guide to San Diego’s Back Country originally written by Michael J. Walawender includes nine field excursions with geological histories of 30 sites.  This synthesis of decades of geological research into the complex and spectacular igneous and metamorphic geology of San Diego County rewards the serious lay reader with an understanding of how plate tectonics and shipwrecked island arcs created and formed southern California.

Features:

• Comprehensive Coverage:  This geological guide covers decades of research of San Diego’s diverse mountains and deserts spanning over 200 million years.
• Field Trips:  Included are nine excursions to 30 stops:  Excursion 1: The Oldest Rocks,  Excursion 2: Quartzite and Marbles at Dos Cabezas Siding,  Excursion 3:  Santiago Peak Volcanics, Excursion 4: Los Pinos Mountain,  Excursion 5:  Granitic Rocks of the Western PRB,  Excursion 6:  The Posta pluton, Excursion 7:  Pregmatites and Migmatites; Excursion 8:  Gold, Excursion 9:  The Jacumba Volcanic Field.
• Maps and Graphs and Schematics:  Plates configurations, geologic maps, schematic diagrams and field trip location maps are included.
• Photographs:  Aerial photographs are included.
• Second Edition Revisions:  Graphics are redrafted in color and photographs were reshot in the field to improve image quality.  For field excursions, information was updated to reflect 2022 access.  Key geological coordinates in latitude and longitude were added to aid navigation.  Finally, footnotes were added to provide updated scientific information and detail.
• Soft cover; 156 pages.  2nd Edition.

This is an informative guide to the geological history and events of the last 200 million years in Anza-Borrego Desert State Park.