MA1905_Ar2 < 20191121094144-132324 > on MA1905-Ar2 pub determined by isotope dilution mass spectrometry with 38Ar spike with Micromass VG5400

measured value uncertainty unit
40Ar/36Ar 2186.0 22.0
air fraction 12.8 %
36Ar 1.0254 0.0177 pg/g
40Arrad 2.3089 0.0374 ng/g
tables:
  • Table 1. Isotopic data for mafic volcanic rocks from Maychew in NW Plateau, Getra-Kele and Tosa- Sucha in SMER, NMER, and Afar of Feyissa, Dejene Hailemariam (2019) Transition from plume-driven to plate-driven magmatism in the evolution of the Main Ethiopian Rift , Journal of Petrology, 60, 1681-1715. more
  • Table S2-1. Major-element compositions (wt%) of mafic volcanic rocks from Maychew in NW Plateau of Feyissa, Dejene Hailemariam (2019) Transition from plume-driven to plate-driven magmatism in the evolution of the Main Ethiopian Rift , Journal of Petrology, 60, 1681-1715. more
  • Table S3-1.Trace-element compositions (ppm) of mafic volcanic rocks from Maychew in NW Plateau of Feyissa, Dejene Hailemariam (2019) Transition from plume-driven to plate-driven magmatism in the evolution of the Main Ethiopian Rift , Journal of Petrology, 60, 1681-1715. more
  • Table 2-1. Results of K-Ar dating for mafic volcanic rocks from NW plateau (Maychew) of Feyissa, Dejene Hailemariam (2019) Transition from plume-driven to plate-driven magmatism in the evolution of the Main Ethiopian Rift , Journal of Petrology, 60, 1681-1715. more