In:
Journal of Geophysical Research: Solid Earth, American Geophysical Union (AGU), Vol. 101, No. B7 ( 1996-07-10), p. 15953-15967
Abstract:
A spatially fixed or at least internally rigid hotspot reference frame has been assumed for determining relative plate motions on Earth. Recent 1:5,000,000 scale mapping of Venus, a planet without terrestrial‐style plate tectonics and ocean cover, reveals a systematic age and dimensional progression of corona‐like arachnoids occurring in an uncinate chain. The nonrandom associations between arachnoids indicate they likely formed from a deep‐seated mantle plume in a manner similar to terrestrial hotspot features. However, absence of expected convergent “plate” margin deformation suggests that the arachnoids are the surface expression of a migratory mantle plume beneath a stationary surface. If mantle plumes are not stationary on Venus, what if any are the implications for Earth?
Type of Medium:
Online Resource
ISSN:
0148-0227
Language:
English
Publisher:
American Geophysical Union (AGU)
Publication Date:
1996
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