Data for “Conduit formation and crustal microxenolith entrainment in a basaltic fissure eruption: Observations from Thríhnúkagígur Volcano, Iceland”

These data correspond to the article “Conduit formation and crustal microxenolith entrainment in a basaltic fissure eruption: Observations from Thríhnúkagígur Volcano, Iceland” by Hudak et al. submitted to Volcanica. Table 1 gives sample locations and brief descriptions. Table 2 provides major and trace element geochemistry, and Sr and Nd isotope compositions. Table 3 records the modal abundances of different phases in thin sections.