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submarine canyon |
Also found in: Wikipedia | 0.02 sec. |
submarine canyonNarrow, steep-sided underwater valley cut into a continental slope. Submarine canyons resemble river canyons on land, usually having steep, rocky walls. They are found along most continental slopes. Those of the Grand Bahama Canyon, which are thought to be the deepest, cut nearly 3 mi (5 km) deep into the continental slope. Most submarine canyons extend only about 30 mi (50 km) or less, but a few are more than 200 mi (300 km) long. submarine canyon [¦səb·mə′rēn ′kan·yən] (geology) Steep-sided valleys winding across the continental shelf or continental slope, probably originally produced by Pleistocene stream erosion, but presently the site of turbidity flows. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Posamentier, a petroleum geologist with Anadarko Canada in Calgary, Alberta, finds that, just as rivers can carve narrow channels within wide valleys on land, turbidity currents can chisel out channels on the broad floors of submarine canyons. State park officials hope the center will tell the story of the oceans and mountains, from the 1,000-foot-deep submarine canyon off Point Mugu to the 3,100-feet-tall Sandstone Peak. |
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