Accession Number : AD0717069

Title :   Paleomagnetism and Plate Tectonics.

Descriptive Note : Summary rept.,

Corporate Author : SCRIPPS INSTITUTION OF OCEANOGRAPHY SAN DIEGO CALIF MARINE PHYSICAL LAB

Personal Author(s) : Francheteau,Jean

Report Date : 01 OCT 1970

Pagination or Media Count : 358

Abstract : Paleomagnetism and plate tectonics are combined in a new procedure for producing paleogeographic reconstructions of the evolution of present day world geography from proto-continents. For each geologic epoch, the continents are first subjected to rotations relative to each other from the data of plate tectonics, then another rotation is carried out with respect to the Earth's spin axis by swinging the virtual paleomagnetic poles to the present north pole in a single rotation. The new method checks Bullard's reconstruction of the continents surrounding the Atlantic Ocean which was accomplished by computer fitting of their continental shelves. (Author)

Descriptors :   (*STRUCTURAL GEOLOGY, REVIEWS), GEOLOGIC AGE DETERMINATION, ROTATION, INTERACTIONS, GEOGRAPHY, GEOMAGNETISM, CONTINENTAL SHELVES, COMPUTER PROGRAMMING, MATHEMATICAL MODELS

Subject Categories : Geomagnetism
      Geology, Geochemistry and Mineralogy

Distribution Statement : APPROVED FOR PUBLIC RELEASE