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dc.contributor.authorMerino, Miguel
dc.contributor.authorKeller, G. Randy
dc.contributor.authorStein, Seth
dc.contributor.authorStein, Carol
dc.date.accessioned2014-02-19T05:38:40Z
dc.date.available2014-02-19T05:38:40Z
dc.date.issued2013-04
dc.identifier.bibliographicCitationMerino, M., Keller, G. R., Stein, S. and Stein, C. Variations in Mid-Continent Rift magma volumes consistent with microplate evolution. Geophysical Research Letters. 2013. 40(8): 1513-1516. DOI: 10.1002/grl.50295en_US
dc.identifier.issn0094-8276
dc.identifier.urihttp://hdl.handle.net/10027/11183
dc.descriptionAn edited version of this paper was published by AGU. Copyright 2013 American Geophysical Union. To view the published open abstract, go to http://dx.doi.org and enter the DOI.en_US
dc.description.abstractModeling of gravity data along the ~1.1Ga failed Mid-Continent Rift System shows systematic patterns in magma volume between and along the rift's two arms. The volume of magma increases towards the Lake Superior region, consistent with magma flowing away from a hotspot source there. The west arm experienced significantly more magmatism. These patterns are consistent with a model in which the two rift arms acted as boundaries of a microplate. The volume of magma along the west arm increases with distance from the Euler pole, indicating that it acted essentially as a spreading ridge, whereas the much smaller magma volumes along the east arm are consistent with its acting as a leaky transform. This view of the rift system's evolution is compatible with the rift being part of an evolving plate boundary system rather than an isolated episode of midplate volcanism.en_US
dc.description.sponsorshipThis work has been supported by NSF grant EAR-1148088en_US
dc.language.isoen_USen_US
dc.publisherAmerican Geophysical Unionen_US
dc.titleVariations in Mid-Continent Rift magma volumes consistent with microplate evolutionen_US
dc.typeArticleen_US


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