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At the southern end of the western Santa Barbara Basin sill, a rounded lobe-like bedrock spur projects out and northwestward from the northern flank of the Channel Islands ridge. Apparent uplift of this spur appears to have pushed the course of Drake Canyon to the west where it joins the lower part of Concepcion Canyon C. The upper part of the spur appears to be terraced or to be composed of flat-bedded outcrops. The lower northern part of the spur is smooth and exhibits high backscatter whereas a steep, well-eroded scarp forms the lower northeastern part of the spur. Between the lower western part of the spur and the braided-like drainage of Drake Canyon, a fairly hummocky high backscatter seafloor exists with two prominent mounds rising above an otherwise flat seafloor to the west.
Perspective view from the northwest
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Channel Islands Slope (west)
grid cell size
|Grid||Sun Illuminated Image||Acoustic
at 1/2 grid cell size