Fig. 3: Primitive mantle58 normalized multielement variation diagrams showing geochemical differences between the tholeiitic lavas from the Rio Grande Rise and the alkaline lavas from the Rio Grande Rise and Jean Charcot Seamount Chain (JCSC). | Communications Earth & Environment

Fig. 3: Primitive mantle58 normalized multielement variation diagrams showing geochemical differences between the tholeiitic lavas from the Rio Grande Rise and the alkaline lavas from the Rio Grande Rise and Jean Charcot Seamount Chain (JCSC).

From: Mantle plume and rift-related volcanism during the evolution of the Rio Grande Rise

Fig. 3

a The lavas samples from the Eastern Rio Grande Rise (ERGR) and Deep Sea Drilling Program (DSDP) Site 516 display trace element patterns similar to those of the Walvis Ridge15,52. b The lava samples from the Western Rio Grande Rise (WRGR) and JCSC exhibit trace element patterns similar to those of Tristan da Cunha and Gough. Note samples with MgO concentrations of <2 wt.% MgO are not shown.

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