VII. Central Valley and Coast Range

A. Late Mesozoic Setting (figure on page 244) - subduction zone and accretionary wedge
  1. fore-arc basin (over 20,000 feet - Great Valley Sequence) (pages 122-124; 244-246)
  2. Coast Range Fault and Coast Range ophiolite (figure on page 256)
  3. melange - Franciscan complex (pages 117-122); accretionary wedge
    1. mud matrix
    2. turbidites - graded bedding
    3. ophiolitic rocks
      • chert - ooze
      • greenstone pillows
      • sheeted dikes complex
      • mafic intrusion
      • MOHO
      • ultra-mafic rocks
    4. high pressure metamorphic rocks
      • serpentinite
      • blueschist
B. Cenozoic sedimentation in the Central Valley
  1. erosion
    1. flatten landscape
    2. sediment source
  2. transport
    1. Sacramento River
    2. San Joaquin River
  3. deposition
    1. delta and shallow marine on east
    2. turbidites on west
  4. Great Valley Sea
    1. formed 200 my?
    2. marine embayment (fig. 11-17)
    3. filled in from north (24?my) to south (2?my)
C. San Francisco Bay
  1. estuary
  2. Lake Clyde - remnant of embayment (fig. 12-30)
  3. outlet through San Francisco Bay by 700,000 (Rockland ash)
  4. Sea level changes (figs. 12-31 & 12-32)
D. Effect of San Andreas Fault
  1. Salinian block - Sierran granite
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