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field trips SAN DIEGO ASSOCIATION OF GEOLOGISTS

Engineering and Coastal Geology of
Southwestern San Diego County
September 15 - 16, 2001


Day 1

The September Field Trip was Great! The field trip focused on examples of engineering geology in San Diego County, including faults, very large landslides and lateral spreading in the Otay Formation, and other unique features of our region. Mining techniques were described at the Otay Rock Quarry and we were able to get up close and personal with the mining equipment. Alan Pace gave us all a chance to go back to college and see the excavation work being done to support the SDSU Trolley Tunnel. Many of us were about "medium well" by then (it was hot) so the Lake Jennings Campground was a welcome relief and it has a view of the Herring Ranch for you equestrians out there. Okay, I missed the next day but included were Sunset Cliffs and coastal bluff issues. A photo soon to be included in the Field Trip section shows Walt Crampton discussing coastal bluff retreat as it relates to the various characteristics of the coastal abrasion platform. Thanks very much to Bob Stroh for organizing the event, our local experts for sharing details of their engineering geology projects, and everyone who attended. You all helped to make this year's field trip interesting and enjoyable.
Group at San Ysidro
Group photo at San Ysidro
Mike Hart and others at San Ysidro
Mike Hart and helpers at San Ysidro
Basal rupture surface of landslide
Basal rupture surface of landslide in San Ysidro
Rock Mountain Quarry
Rock Mountain Quarry
SDSU trolley stop
SDSU Trolley Stop
Lake Jennings Campground
End of day at Lake Jennings Campground
Time for refreshments at camp
Time for refreshments at camp
David Schug giving a presentation
David Schug giving a presentation after dinner

Day 2

The Group at the Pier
Field Trip Group at Scripps Pier
Walt Crampton at Scripps Pier
Walt Crampton at Scripps Pier
Southwest Fisheries Building
Southwest Fisheries Building
Torrey Pines Cliffs
Torrey Pines Cliffs
View North of Pescadero Seawall
View North of Pescadero Seawall
Various methods of Bluff Stabilization
Various methods of Bluff Stabilization


field trips

Info on the Field Guide

The coastal geology of San Diego is explored in this guidebook, published for the San Diego Association of Geologists (SDAG) 2001 annual field trip under the supervision of Robert C. Stroh. Self-guiding road logs range throughout the coastal plain from San Ysidro to Sunset Cliffs/Point Loma via Otay Mesa, SDSU, Lake Jennings, Black Mountain, and the Torrey Pines/La Jolla coastline. Technical papers focus on coastal processes and engineering geology including landslides, beach erosion and bluff retreat, stratigraphy of western San Diego County, and geotechnical issues in the Peninsular Ranges.


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