Feyissa et al. (2019) Transition from plume-driven to plate-driven magmatism in the evolution of the Main Ethiopian Rift , Journal of Petrology, 60, 1681-1715, doi:10.1093/petrology/egz043. < 20191025114120-527205 > pub
Table 2-2. Results of K-Ar dating for mafic volcanic rocks from SMER (Getra-Kele and Tosa-Sucha) < 20191128120133-153219 > pub
measured unit TD-1815_K TD-1815-1 TD-1815-2 TD-1815-3 TD-1817_K TD-1817-1 TD-1817-2 TD-1825_K TD-1825_Ar1 TD-1825_Ar2 TD-1826A_K TD-1826A_Ar1 TD-1826A_Ar2 TD-1826B_K TD-1826B_Ar1 TD-1826B_Ar2 TD-1833_K TD-1833_Ar1 TD-1833_Ar2 TD-1836_K TD-1836_Ar1 TD-1836_Ar2 TD-1837A_K TD-1837A_Ar1 TD-1837A_Ar2 TD-1839_K TD-1839_Ar1 TD-1839_Ar2 TD-1842_K TD-1842 1 TD-1842 2 TD-1842 3 TD-1842 4 TD-1842 5
latitude N5°0′30.0″ - - - N5°42′56.0″ - - N5°50′32.0″ - - N5°50′32.0″ - - N5°50′32.0″ - - N5°37′58.0″ - - N5°59′32.0″ - - N5°59′37.0″ - - N5°58′6.0″ - - N5°57′53.0″ - - - - -
longitude E37°45′56.0″ - - - E37°42′56.0″ - - E37°54′4.0″ - - E37°54′4.0″ - - E37°54′4.0″ - - E37°37′26.0″ - - E37°32′23.0″ - - E37°32′21.0″ - - E37°36′0.0″ - - E37°39′19.0″ - - - - -
age Ma - 11.01 (0.25) 10.88 (0.24) 11.0 (0.25) - 11.24 (0.26) 11.32 (0.25) - 10.64 (0.26) 10.87 (0.27) - 16.33 (0.37) 16.4 (0.37) - 16.51 (0.38) 16.37 (0.37) - 12.39 (0.29) 12.02 (0.28) - 0.55 (0.02) 0.61 (0.03) - 0.54 (0.02) 0.58 (0.12) - 0.57 (0.02) 0.57 (0.06) - 1.25 (0.03) 1.24 (0.04) 1.27 (0.04) 1.25 (0.04) 1.3 (0.04)
[K] a cg/g 1.95 - - - 0.765 - - 0.789 - - 1.4 - - 1.37 - - 1.22 - - 1.33 - - 2.38 - - 2.03 - - 1.4 - - - - -
36Ar b pg/g - 0.785 (0.021) 0.671 (0.013) 0.688 (0.01) - 1.053 (0.013) 0.473 (0.006) - 2.166 (0.016) 1.813 (0.016) - 0.737 (0.016) 0.942 (0.128) - 1.539 (0.023) 1.34 (0.019) - 3.948 (0.048) 3.819 (0.048) - 0.629 (0.008) 0.546 (0.008) - 2.215 (0.032) 2.198 (0.048) - 0.879 (0.013) 0.693 (0.018) - 0.624 (0.008) 0.793 (0.01) 0.733 (0.019) 0.533 (0.014) 0.53 (0.014)
40Arrad b ng/g - 1.492 (0.018) 1.475 (0.016) 1.491 (0.016) - 0.597 (0.007) 0.601 (0.007) - 0.583 (0.009) 0.596 (0.009) - 1.592 (0.016) 1.599 (0.016) - 1.574 (0.018) 1.56 (0.018) - 1.054 (0.014) 1.022 (0.013) - 0.051 (0.001) 0.057 (0.002) - 0.089 (0.003) 0.095 (0.02) - 0.08 (0.003) 0.08 (0.008) - 0.121 (0.002) 0.121 (0.003) 0.124 (0.003) 0.122 (0.003) 0.127 (0.003)
40Ar/36Ar b - 2008.0 (41.0) 2278.0 (14.0) 2247.0 (14.0) - 806.8 (9.7) 1439.0 (6.0) - 538.4 (3.0) 592.1 (4.0) - 2243.0 (15.0) 1824.0 (9.0) - 1216.0 (14.0) 1344.0 (17.0) - 536.5 (2.0) 537.3 (1.8) - 369.3 (1.0) 389.1 (2.5) - 332.0 (0.6) 334.9 (5.8) - 378.0 (0.6) 399.4 (7.7) - 471.0 (2.7) 433.1 (4.0) 445.8 (1.7) 497.7 (1.8) 503.6 (3.1)
air fraction b % - 14.7 13.1 13.2 - 36.7 20.6 - 55.0 50.0 - 13.2 16.2 - 24.3 22.0 - 55.2 55.1 - 80.2 76.1 - 89.2 88.4 - 78.3 74.1 - 62.8 68.3 66.1 59.0 57.9
(a) determined by Flame emission spectrometry on Shimadzu AA6200
(b) determined by isotope dilution mass spectrometry with 38Ar spike on Micromass VG5400
name physical-form quantity unit global-id
TD-1815_K pub powder 20191129105600-443450
TD-1815-1 pub grain 20130122141916-714-148
TD-1815-2 pub grain 20130122142003-118-269
TD-1815-3 pub grain 20191129110555-679346
TD-1817_K pub powder 20191129111319-935416
TD-1817-1 pub grain 20191129132357-263604
TD-1817-2 pub grain 20191129111319-258149
TD-1825_K pub 20191129132034-240437
TD-1825_Ar1 pub 20191129132034-076090
TD-1825_Ar2 pub 20191129132034-069732
TD-1826A_K pub 20191129133241-791471
TD-1826A_Ar1 pub 20191129133241-395195
TD-1826A_Ar2 pub 20191129133241-348888
TD-1826B_K pub 20191129133906-038158
TD-1826B_Ar1 pub 20191129133906-427370
TD-1826B_Ar2 pub 20191129133906-405160
TD-1833_K pub 20191129134635-537050
TD-1833_Ar1 pub 20191129134635-800666
TD-1833_Ar2 pub 20191129134635-018694
TD-1836_K pub 20191129135300-920678
TD-1836_Ar1 pub 20191129135300-344306
TD-1836_Ar2 pub 20191129135300-164770
TD-1837A_K pub 20191129135905-547999
TD-1837A_Ar1 pub 20191129135905-424705
TD-1837A_Ar2 pub 20191129135905-458020
TD-1839_K pub 20191129140708-593712
TD-1839_Ar1 pub 20191129140708-960189
TD-1839_Ar2 pub 20191129140708-168632
TD-1842_K pub 20191129141441-530256
TD-1842 1 pub 20150325090932-770388
TD-1842 2 pub 20150325090939-385909
TD-1842 3 pub 20150325090947-868029
TD-1842 4 pub 20191129141441-760893
TD-1842 5 pub 20191129141441-071372

The table is created from analysis shown below. The rowname K-Ar dating (Dejene et al., 2017) filters out analysis. Upper analysis has priority.To list more analysis, add a stone in stone sub-tab.

  • name
    technique
    device
    priority
TD-1815_K TD-1815-1 TD-1815-2 TD-1815-3 TD-1817_K TD-1817-1 TD-1817-2 TD-1825_K TD-1825_Ar1 TD-1825_Ar2 TD-1826A_K TD-1826A_Ar1 TD-1826A_Ar2 TD-1826B_K TD-1826B_Ar1 TD-1826B_Ar2 TD-1833_K TD-1833_Ar1 TD-1833_Ar2 TD-1836_K TD-1836_Ar1 TD-1836_Ar2 TD-1837A_K TD-1837A_Ar1 TD-1837A_Ar2 TD-1839_K TD-1839_Ar1 TD-1839_Ar2 TD-1842_K TD-1842 1 TD-1842 2 TD-1842 3 TD-1842 4 TD-1842 5