Fig. 4: Age vs distance from Gough Island.
From: 40Ar/39Ar dating reveals over 30 million years of plume-ridge interaction formed the Rio Grande Rise
RGR is generally age-progressive. The Jean-Charcot Seamounts could either be age-progressive with respect to the main-phase of RGR (Homrighausen et al.9 model), or with respect to the late-stage Eocene volcanism at W-RGR (our model). Note that we have shown the Jean-Charcot seamounts schematically with the oval field which spans the distance from the nearest to closest from Gough, while in reality there are over 20 individual seamounts.
