Migration of mid-ocean-ridge volcanic segments
摘要:
The propagation of small-offset volcanic spreading-centre segments along mid-ocean ridge crests may reflect absolute motion of the plate boundary relative to the underlying mesospheric frame. Such a relationship could be caused by a purely vertical flow of the mantle under spreading centres and would have value in constraining past plate motions from non-transform trends generated during along-ridge propagation and in linking the major-element variability of oceanic crust and upper mantle to the bulk composition and temperatures of mantle ascending under mid-ocean ridges.
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关键词:
Earth mantle Magma Ocean ridges Oceanic crust Volcanoes Fluid flow Chambers Cracks Earth crust Frames Melts Mesosphere Motion Position(Location) Reprints Sea ice Temperature Vertical orientation Migration
DOI:
10.1038/326835a0
被引量:
年份:
1987
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