Cover image for World ocean floors Pacific ocean ; Indian ocean
World ocean floors Pacific ocean ; Indian ocean
World ocean floors Pacific ocean ; Indian ocean
National Geographic Society (U.S.). Cartographic Division.
Publication Information:
Washington, D.C. : The Society, 1992.
Physical Description:
2 maps on 1 sheet : both sides, color ; each 47 x 61 cm, on sheet 52 x 80 cm, folded to 13 x 16 cm
General Note:
Relief shown by shading and spot heights. Depths shown by shading and soundings.

Includes brief articles on deep sea vents by Michael Kenna and plate tectonics by Carolyn H. Anderson and col. ill. of plate movements throughout time, 2 hemispheres showing existing plate locations and boundaries, block diagram showing the creation of mountains due to plate subduction, world map showing spreading centers and active vents, drawing of ocean floor and sea life around an active vent, and cross-section of seafloor spreading.

"Supplement to the National Geographic, June 1992, Page 70A, Vol. 181 No. 6 - Pacific/Indian ocean floors."

Source for ocean floor relief is General Bathymetric Chart of the Oceans.
Added Author:
Format :