Computer Science
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992e%26psl.111..123g&link_type=abstract
Earth and Planetary Science Letters (ISSN 0012-821X), vol. 111, no. 1, June 1992, p. 123-139.
Computer Science
24
Crustal Fractures, Equatorial Regions, Lithosphere, Ocean Bottom, Pacific Ocean, Plates (Tectonics), Gravitational Fields, Satellite Observation, Seasat Satellites
Scientific paper
Seabeam bathymetry and gravity measurements aboard a research vessel in the area of central Pacific have independently confirmed the existence of lineations in the gravity field that had been observed earlier in the Seasat geoid data. This paper investigates the bounds on possible internal deformation of the Pacific plate, required by a lithospheric boudinage model proposed to explain these lineations. For this purpose, separations between a pair of fracture zones on the Pacific plate which occur in an area of lineations were determinted using all available data and were compared to a corresponding fracture zone pair on the Nazca plate, where no lineations were observed. It was found that the difference in fracture zone spacing on the Pacific plate, compared to the Nazca plate, increases as the age of oceanic lithosphere decreases. However, the main lithospheric stretching models require the fracture zone separation to increase with age.
Goodwillie Andrew M.
Parsons Barry
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