Mantle degassing of primordial helium through submarine ridge flank basaltic basement

Huei-Ting Lin,Marvin D. Lilley,John E. Lupton,Michael S. Rappé

Earth and Planetary Science Letters（2020）

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摘要

•First reported helium isotopic concentration and compositions of ridge flank fluid.•He3 degassed from mantle into the ridge flank basaltic basement.•He3 flux through warm ridge flank accounts for 0.7-6.•Presence of He3 is suggestive of possible mantle-derived methane in this system.

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关键词

3He mantle degassing,ridge flank,abiotic methane,mantle-crust boundary,basement fluids,deep subseafloor

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