2011
DOI: 10.1029/2010jb007726
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Temperature and rheological properties of the mantle beneath the North American craton from an analysis of heat flux and seismic data

Abstract: [1] We combine heat flux data and seismic velocity models for the North American lithosphere to derive constraints on thermal conditions and deformation mechanisms in the underlying convecting mantle. Local heat flux averages that are not affected by shallow crustal heat production contrasts allow calculation of reliable lithospheric geotherms and uncertainty ranges. For consistency with the seismic data, the mantle potential temperature beneath North America must lie within a 1290°C-1450°C range, close to tha… Show more

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Cited by 27 publications
(45 citation statements)
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References 67 publications
(157 reference statements)
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“…Thickness of the original unstretched crust inferred from the rift's western margins and in Yemen/Arabia is between 19 and 21 km for the upper and 18 to 23 km for the lower crust (Mechie et al, 1986;Markis and Ginzburg, 1987;Maguire et al, 2006). At Erta Ale, we find an upper crustal thickness of 2 and 1 km and a lower crust of 11 and 9 km from a near-by seismic station and wide-angle seismic survey (Markis and Ginzburg, 1987;Hammond et al, 2011).…”
Section: Constraints On Igneous Addition To the Crustmentioning
confidence: 84%
“…Thickness of the original unstretched crust inferred from the rift's western margins and in Yemen/Arabia is between 19 and 21 km for the upper and 18 to 23 km for the lower crust (Mechie et al, 1986;Markis and Ginzburg, 1987;Maguire et al, 2006). At Erta Ale, we find an upper crustal thickness of 2 and 1 km and a lower crust of 11 and 9 km from a near-by seismic station and wide-angle seismic survey (Markis and Ginzburg, 1987;Hammond et al, 2011).…”
Section: Constraints On Igneous Addition To the Crustmentioning
confidence: 84%
“…3) whereas the latter is obtained from the systematics of heat flux and heat production data at different scales, as described in several papers (e.g., Jaupart and Mareschal, 1999;Mareschal and Jaupart, 2004;Perry et al, 2006aPerry et al, , 2006bLévy and Jaupart, 2011). Independent constraints on the value of the Moho heat flux have been derived from geothermobarometry studies on mantle xenoliths (Rudnick et al, 1998;Kukkonen and Peltonen, 1999;Russell et al, 2001).…”
Section: Crustal Structure and Propertiesmentioning
confidence: 99%
“…Using the constraints of heat flow and seismic data on the one hand and various rheological laws and their parameters on the other hand, Lévy and Jaupart (2011) arrived at self-consistent models for North America. Using the constraints of heat flow and seismic data on the one hand and various rheological laws and their parameters on the other hand, Lévy and Jaupart (2011) arrived at self-consistent models for North America.…”
Section: Thermal Control On Lithospheric Thicknessmentioning
confidence: 99%