This website uses cookies
Find out more
Product has been added to the basket

SUP18233

Parent Paper: Precise 40Ar/39Ar geochronology for the upper Koobi Fora Formation, Turkana Basin, northern Kenya

McDOUGALL, I. & BROWN, F. H.

Appearing in Journal of the Geological Society, Vol. 163, Part 1, January 2006, pp. 205-220.

Supplementary Tables 1-18 (provided as comma delimited (.csv) excel files):
  • SUP18233T1: Table 4. Results of laser fusion 40Ar/39Ar dating of single crystals of anorthoclase from three pumice clasts from the Malbe Tuff, KBS Member, Koobi Fora Formation. Samples 81-165 and 93-1082 from Area 112, Koobi Fora, photolocality 1656/040-102; sample 81-201 from Area 105, Lucas site, photolocality 1646/184-103.
  • SUP18233T2: Table 5. Results of laser fusion 40Ar/39Ar dating of single crystals of anorthoclase from pumice clasts from the Chibele Tuff, Nkalabong Formation, Kibish area, southern Ethiopia. Field number KIB03-264.
  • SUP18233T3: Table 6. Results of laser fusion 40Ar/39Ar analyses on anorthoclase crystals from three pumice clasts of Morutot Tuff (= J4) composition in the KBS Member of the Koobi Fora Formation. Area 131, near FxJj20, Karari Ridge. Field number K93-6021.
  • SUP18233T4: Table 7. Results of laser fusion 40Ar/39Ar dating of single crystals of anorthoclase from two pumice clasts, Morutot Tuff (= J-4) from upper part of Kaitio Member, Nachukui Formation. From Nanyangakipi, NW of Murotot, west of Lake Turkana, northern Kenya. 
  • SUP18233T5: Table 8. Results of laser fusion 40Ar/39Ar dating of anorthoclase crystals from two pumice clasts from the Lower Ileret Tuff, Okote Member, Koobi Fora Formation. Area 6, Ileret, photolocation 1399/095-145. Field sample number K93-6018.
  • SUP18233T6: Table 9. Results of laser fusion 40Ar/39Ar dating of anorthoclase crystals from three pumice clasts, Morte Tuff, Okote Member, Koobi Fora Formation. Area 119, photolocation 1540-178-115, Koobi Fora, northern Kenya. 
  • SUP18233T7: Table 10. Results of laser fusion 40Ar/39Ar dating of anorthoclase from two pumice clasts (98-1085A, B), Morte Tuff, Okote Member, Koobi Fora Formation. Area 101, Koobi Fora, photolocality 1343/103-174. Sample field number K93-6030. Sample 83-260 is from the same tuff in Area 119, Koobi Fora, probably reworked from the Morutot Tuff.
  • SUP18233T8: Table 11. Results of laser fusion 40Ar/39Ar dating of mainly single crystals of anorthoclase from three pumice clasts two from the Lower Koobi Fora Tuff, Okote Member, Koobi Fora Formation. Area 101, Koobi Fora, photolocality 1343/102-173. Sample field number K93-6031. Pumice 98-322 from Ebei Tuff, Kaitio Member, Nachukui Formation, north arm of Kalochoro Laga, west of Lake Turkana.
  • SUP18233T9: Table 12. Results of laser fusion 40Ar/39Ar dating of single crystals of anorthoclase from three separate pumice clasts from the Koobi Fora Tuff, Area 101, Koobi Fora, from the Okote Member, Koobi Fora Formation. Photolocation 1343/103-175, upper tuff adjacent to fault.
  • SUP18233T10: Table 13. Results of 40Ar/39Ar single crystal dating of anorthoclase from three pumice clasts from the Karari Blue Tuff in the Okote Member, Koobi Fora Formation, at site FxJj43, Karari Ridge, Koobi Fora.
  • SUP18233T11: Table 14. Results of laser fusion 40Ar/39Ar dating of single crystals of anorthoclase from four pumice clasts from the Chari Tuff, Chari, Member, Koobi Fora Formation. Samples 81-149 and 81-143 from Area 131, Koobi Fora, photolocality 1750/067-150; samples 81-219 and 81-215 from Area 1, Ileret, photolocality 1467/067-122.
  • SUP18233T12: Table 15. Results of laser fusion 40Ar/39Ar dating of single crystals of anorthoclase from three separate pumice clasts from Gele Tuff, Chari Member, Koobi Fora Formation. Ileret Area, Koobi Fora, photolocality 1398/187-166 (4kb).
  • SUP18233T13: Table 16. Results of laser fusion 40Ar/39Ar dating of single crystals of anorthoclase from three pumice clasts from the Lower Nariokotome Tuff, Nariokotome Member, Nachukui Formation, 3 km west of Morutot for 93-1060 and 93-1061, and in Kaitio Laga for 00-295(B), field number K82-789, west side Lake Turkana, northern Kenya.
  • SUP18233T14: Table 17. Results of laser fusion 40Ar/39Ar dating of single crystals of anorthoclase from two pumice clasts in the Lower Nariokotome Tuff, Nariokotome Member, Nachukui Formation. About 500 m west of Homo erectus skeleton site, Nariokotome, west of Lake Turkana.
  • SUP18233T15: Table 18. Results of laser fusion 40Ar/39Ar dating of single crystals of anorthoclase from the Upper Nariokotome Tuff (93-1070), and from Middle Nariokotome Tuff (93-1062(A), 93-1062(B)), Nariokotome Member, Nachukui Formation. Sample 93-1070 from Lokapetamoi, samples 93-1067(A), 93-1062(B) are from ~2.4 km W of road, Morutot. West of Lake Turkana, northern Kenya.
  • SUP18233T16: Table 19. Results of laser fusion 40Ar/39Ar dating of single crystals of anorthoclase from pumice clasts from the Silbo Tuff, Chari Member, Koobi Fora Formation. 93-1074 (field number K93-6016) from Area 7, Ileret; 93-1083 (field number K93-6026) and 81-155 and 81-161 from near Shin, photolocality 1816/152-110.
  • SUP18233T17: Table 20. Results of 40Ar/39Ar step heating experiment on feldspar from pumice in Morutot Tuff, Kaitio Member, Nachukui Formation, Nanyangakipi, west of Lake Turkana, northern Kenya. 
  • SUP18233T18: Table 21. Results of 40Ar-39Ar step heating experiment on feldspar from pumice in the Upper Nariokotome Tuff, Nariokotome Member, Nachukui Formation, Lokapetamoi Laga in Morutot area, west of Lake Turkana, northern Kenya.