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The eastern section of the Santa Barbara Basin is characterized by a morphologic and structural high, known as Mid-Channel trend or Twelve-Mile Reef. The Mid-Channel trend exposes Pliocene to Pleistocene units (M. Kamerling, UC Santa Barbara, pers. comm. 2000) and has been interpreted as an anticline that is bound by eastsoutheast-westnorthwest trending faults of the Oak Ridge fault system (Kamerling et al., 1998).
Its westernmost extension is covered by the Goleta slide that extends from the shelf break along the 100 m contour down to the 570 m depth contour (Greene et al., in preparation). The anticline plunges to the west and appears to dive beneath the Goleta slide.
The Mid-Channel trend is characterized by fault scarps, sea stacks, and pockmarks. Pockmarks on the western segment of the Mid-Channel trend are aligned parallel to the eastsoutheast-westnorthwest structural grain suggesting a structural control of pockmark formation.
Santa Barbara Anticline perspective view from the southeast
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Santa Barbara Anticline data—10 meter
grid cell size
|Grid||Sun Illuminated Image||Acoustic
at 1/2 grid cell size