Ancient refractory asthenosphere revealed by mantle re-melting at the Arctic Mid Atlantic Ridge

• Published in: Earth and Planetary Science Letters
• Main Authors: Sanfilippo A., Salters V. J. M., Sokolov S. Y., Peyve A. A., Stracke A.
• Other Authors: Sanfilippo, A., Salters, V. J. M., Sokolov, S. Y., Peyve, A. A., Stracke, A.
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2021
• Subjects: depleted mantle; Knipovich Ridge; magma mixing; Mid Ocean Ridge Basalt; Nd-Hf isotopes; Arctic; Mid-Atlantic Ridge
• Online Access: http://hdl.handle.net/11571/1452217; https://doi.org/10.1016/j.epsl.2021.116981

The upper mantle is a heterogeneous mixture of refractory and recycled crustal domains. The recycled portions, more fertile and thus preferentially melted, dominate the composition of the basalts erupted on the surface, whereas the imprint of melting of the refractory counterparts is more difficult...