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A migratory mantle plume on Venus: Implications for Earth?

Journal of Geophysical Research B: Solid Earth

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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?

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
A migratory mantle plume on Venus: Implications for Earth?
Series title:
Journal of Geophysical Research B: Solid Earth
Volume
101
Issue:
7
Year Published:
1996
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Geophysical Research B: Solid Earth
First page:
15953
Last page:
15967
Number of Pages:
15