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dc.contributor.authorBehn, Mark D.  Concept link
dc.contributor.authorBoettcher, Margaret S.  Concept link
dc.contributor.authorHirth, Greg  Concept link
dc.date.accessioned2007-04-03T12:43:54Z
dc.date.available2007-04-03T12:43:54Z
dc.date.issued2007-04
dc.identifier.citationGeology 35 (2007): 307-310en
dc.identifier.urihttps://hdl.handle.net/1912/1545
dc.descriptionAuthor Posting. © Geological Society of America, 2007. This article is posted here by permission of Geological Society of America for personal use, not for redistribution. The definitive version was published in Geology 35 (2007): 307-310, doi:10.1130/G23112A.1.en
dc.description.abstractWe use three-dimensional finite element simulations to investigate the temperature structure beneath oceanic transform faults. We show that using a rheology that incorporates brittle weakening of the lithosphere generates a region of enhanced mantle upwelling and elevated temperatures along the transform; the warmest temperatures and thinnest lithosphere are predicted to be near the center of the transform. Previous studies predicted that the mantle beneath oceanic transform faults is anomalously cold relative to adjacent intraplate regions, with the thickest lithosphere located at the center of the transform. These earlier studies used simplified rheologic laws to simulate the behavior of the lithosphere and underlying asthenosphere. We show that the warmer thermal structure predicted by our calculations is directly attributed to the inclusion of a more realistic brittle rheology. This temperature structure is consistent with a wide range of observations from ridge-transform environments, including the depth of seismicity, geochemical anomalies along adjacent ridge segments, and the tendency for long transforms to break into small intratransform spreading centers during changes in plate motion.en
dc.description.sponsorshipFunding was provided by National Science Foundation grants EAR-0405709, EAR-0509882, OCE-0548672, and OCE-0623188.en
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen
dc.publisherGeological Society of Americaen
dc.relation.urihttps://doi.org/10.1130/G23112A.1
dc.subjectOceanic transform faultsen
dc.subjectMid-ocean ridgesen
dc.subjectFault rheologyen
dc.subjectIntratransform spreading centersen
dc.titleThermal structure of oceanic transform faultsen
dc.typeArticleen
dc.identifier.doi10.1130/G23112A.1


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