PENINSULA GEOLOGICAL SOCIETY
FIELD TRIP


COASTAL GEOLOGY: SAN FRANCISCO-SANTA CRUZ; QUATERNARY TECTONICS, SEDIMENTATION, ENGINEERING PROBLEMS

Leaders:

Ken Lajoie (USGS, Coordinator), Bob Anderson (U.C. Santa Cruz), Bill Glen (College of San Mateo), Ralph Hunter (USGS, retired), Bob Jachens (USGS), Gary Simpson (Wm. Lettis & Associates), Joan Van Velsor (CALTRANS), Jerry Weber (Weber, Hayes, & Associates), Robert Zatkin (formerly USGS), Mary Lou Zoback (USGS).

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  • Saturday & Sunday, May 18-19, 1996

    • Overnight camping at beautiful Jack Brooks Horse Camp in Sam MacDonald Park. Hot showers, dinner, campfire, breakfast roll provided.

    The trip: Starts 9:00 a.m., large parking lot at Ft. Funston on Hwy l, southwest San Francisco west of Lake Merced. Major stops:

  • Ft. Funston-San Andreas fault offshore/onshore; Merced Fm, sedimentation age and tectonic history.
  • Thornton Beach--Merced Fm and evidence for first arrival of Sierran debris through Carquinas Strait, also landslides, tectonics, erosion since construction of old RR grade in 1921.
  • Devils slide--Geology, engineering problems and politics, Paleozoic rocks, granitic rocks.
  • Fitzgerald Marine Reserve at Seal Cove--Seal Cove fault, sea-cliff erosion.
  • Miramontes Point and Tunitas Creek-Half Moon Bay terrace deformation and sea-cliff erosion.
  • Pescadero and Año Nuevo-Faulted terraces, tectonic blocks.
  • Santa Cruz area-Uplifted marine terraces and the Loma Prieta earthquake.

    The trip will end near Santa Cruz, probably in the early afternoon Sunday.

    Cost and sign-up: $16 (students $10), includes camp fee, dinner Saturday night (including soft drinks), sweet roll or muffin Sunday morning. Contact John Galloway (USGS) (650) 329-5688 ASAP, but no later than Tuesday, May 14. Send checks, made out to "PGS," to John Galloway, U.S. Geological Survey, 345 Middlefield Rd., MS-904, Menlo Park, CA 94025. Vegetarians: identify yourselves if you want Saturday dinner provided in camp.

    Transportation: Colleges and universities should arrange transportation for their people. Those on the mid-Peninsula and at the USGS, contact John Galloway, USGS, (650) 329-5688, for information on car pooling. People car-pooling from the USGS center in Menlo Park should meet at the flagpole on Homewood Place, 7:30 Saturday morning. Departure: 8:00.

    Food & equipment: Bring lunch on Saturday and breakfast and lunch for Sunday; camping gear.

    Guidebook: Will be distributed at starting point if we can get one together. Nominal cost.

    Dues for Academic Year 1995-96 ($5.00) should be sent to John Galloway, USGS, MS-904, 345 Middlefield Rd., Menlo Park, CA 94025. John's phone: 650-329-5688.

    Officers: Chet Wrucke, President; Mike Diggles, Vice President; Vicki Langenheim, Secretary; John Galloway, Treasurer

    Date created: 05/03/1996
    Last modified: 02/06/2003
    Created by: Mike Diggles, Vice President, PGS.
    c/o U.S. Geological Survey, MS-951, 345 Middlefield Road, Menlo Park, CA 94025. (650) 329-5404 email to mdiggles@usgs.gov
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