DatasetArgon data for enriched MORB from the 8°20' N seamount chainMorgan, Leah EThis dataset accompanies planned publication 'Near-Ridge Magmatism Constrained Using 40Ar/39Ar Dating of Enriched MORB from the 8°20' N Seamount Chain'. The Ar/Ar data are for samples that record the volcanic history of the area. The geochronology provides time constraints for the eruption of rocks studied in the manuscript. Samples were collected from the 8°20' N seamount chain by Molly Anderson (University of Florida), who sent them to the USGS Denver Argon Geochronology Laboratory for Ar/Ar analysis.U.S. Geological Survey2023-01-0110494143https://doi.org/10.5066/P9ECGKYO2001314GeochronologyNational Science Foundation