Continental rifting at magmatic centres: structural implications from Late Quaternary Menengai Caldera, central Kenya Rift Continental rifting at Menengai Caldera RiedlSimon MelnickDaniel MibeiGeoffrey K. NjueLucy StreckerManfred R. 2019 <sup>40</sup>Ar–<sup>39</sup>Ar radiometric dating data table