Coastal & Marine Geology InfoBank

Home FACS Activities Atlas Geology School Related Sites More

USGS CMG InfoBank: Continental Slope and Rise

Skip navigational links
Loading
Dictionaries: Our Mapping Systems   The USGS and Science Education   USGS Fact Sheets   Topics   Keywords   Data Dictionary   Metadata Dictionary   Computer Terminology   Digital Formats  
InfoBank Terms: Activity ID   activity overview   crew   digital data   formal metadata   lines   metadata   NGDC   port stops   project/theme   region   ship   stations   time   virtual globe   year  
Data Types: bathymetry   biological   geochemical   gravity   ground penetrating radar   imaging   LIDAR   logs   magnetics   metering equipment   navigation   samples   seismic   total station   definitions disclaimer  
Data Formats: ARC coverage   E00   FGDC metadata   gridded/image   imaging   material   scattered/swath   Shapefile   vector/polygon  
Comment: 05:04 - 06:11 (01:07)
Source: Annenberg/CPB Resources - Earth Revealed - 4. The Sea Floor
Keywords: "Tanya L. Atwater", "continental shelf", "continental slope", "continental rise"

Our transcription: If we started at the beach and went toward the deep ocean, we would see first, the "Continental Shelf", and then, usually, there's a quiet distinct break in slope, and it's suddenly steep.
That's really the geologic edge of the continent, so it's shallow at about 200 meters depth, though it varies from place to place.
Suddenly, its deep, and then it drops all the way to four or six kilometers depth to the deep ocean, so it's very tall scarf from the edge of the Continental Shelf to the deep ocean, that's called the "Continental Slope".
Then, when you get to the base of the slope, there's a huge long shallow slope where all the debris that's coming off the continent is deposited, and so it's a very gradual slope that's called the "Continental Rise".
If you were coming towards the continent, you'd slowly rise up it, and all the debris that's coming out of all the rivers and off of the slope by a lot of different processes, all end up in a big pile, slowly getting thinner and finer as you go away from the base of the slope.

Geology School Keywords
Skip footer navigational links

Coastal and Marine Science Centers:  Pacific   St. Petersburg   Woods Hole  
InfoBank   Coastal and Marine Geology Program   Geologic Information   Ask-A-Geologist   USGS Disclaimer  


Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://walrus.wr.usgs.gov/infobank/programs/html/school/moviepage/04.01.07.html
Page Contact Information: InfoBank staff
Page Last Modified: Thu Oct 31 04:25:29 PDT 2013  (chd)