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 2-4. Results of K-Ar dating for mafic volcanic rocks from Afar < 20191128120333-262362 > pub
measured unit DHA-16 K DHA-16b-1 DHA-16b-2 DHA-13 K DHA-13-1 DHA-13-2 DHA-10 K DHA-10b-1 DHA-10b-2 dha-4 K dha-4-1 dha-4-2 dha-6a K dha-6a-Ar1 dha-6a-Ar2 DHA-31 K GM DHA-31-1 GM DHA-31-2 DHA-34 K DHA-34-1 DHA-34-2 DHA-36A K DHA-36Ab-1 DHA-36Ab-2 DHA-9_K DHA-9_Ar1 DHA-9_Ar2 DHA-20 K DHA-20-1 DHA-20-2 DHA-24 K DHA-24-1 DHA-24-2 DHA-26 K DHA-26-1 DHA-26-2 dha-29 K dha-29-1 dha-29-2 dha-30 K dha-30-1 dha-30-2 DHA-40 K DHA-40-1 DHA-40-2 DHA-41 K DHA-41-1 DHA-41-2 DHA-45 K DHA-45-1 DHA-45-2 dha-18 K dha-18_Ar1 dha-18_Ar2 DHA-1 K DHA-1-1 DHA-1-2
latitude N12°20′26.0″ - - N12°4′51.0″ - - N11°58′17.0″ - - N11°57′46.0″ - - N11°55′9.0″ - - N11°53′27.0″ - - N11°53′24.0″ - - N11°53′26.0″ - - N11°50′51.0″ - - N11°42′4.0″ - - N11°36′1.0″ - - N11°26′59.0″ - - N11°25′20.0″ - - N11°25′29.0″ - - N11°22′7.0″ - - N11°12′53.0″ - - N10°43′33.0″ - - N11°37′56.0″ - - N11°48′21.0″ - -
longitude E41°9′57.0″ - - E41°15′9.0″ - - E41°18′8.0″ - - E41°22′59.0″ - - E41°33′49.0″ - - E41°38′2.0″ - - E41°39′18.0″ - - E41°42′56.0″ - - E41°41′11.0″ - - E40°56′10.0″ - - E40°56′1.0″ - - E40°45′10.0″ - - E40°40′34.0″ - - E40°38′23.0″ - - E40°43′57.0″ - - E40°44′27.0″ - - E40°40′59.0″ - - E41°24′32.0″ - - E41°0′58.0″ - -
age Ma - 1.24 (0.07) 1.13 (0.06) - 1.25 (0.12) 1.26 (0.12) - 1.36 (0.07) 1.28 (0.07) - 1.63 (0.13) 1.68 (0.13) - 1.33 (0.14) 1.37 (0.15) - 1.67 (0.13) 1.66 (0.12) - 1.9 (0.12) 1.81 (0.11) - 2.9 (0.16) 2.83 (0.16) - 1.54 (0.08) 1.54 (0.09) - 1.56 (0.09) 1.49 (0.09) - 1.98 (0.14) 2.02 (0.14) - 2.94 (0.22) 2.61 (0.22) - 3.93 (0.27) 4.18 (0.28) - 2.97 (0.21) 2.92 (0.2) - 3.05 (0.2) 2.99 (0.2) - 2.63 (0.18) 2.52 (0.17) - 4.51 (0.26) 4.5 (0.26) - 0.71 (0.23) 0.87 (0.17) - 0.15 (0.05) 0.09 (0.05)
[K] a cg/g 0.979 - - 0.698 - - 1.52 - - 0.556 - - 0.828 - - 1.04 - - 0.626 - - 0.463 - - 0.823 - - 0.694 - - 0.695 - - 0.182 - - 0.273 - - 0.617 - - 0.539 - - 0.284 - - 0.532 - - 0.323 - - 0.827 - -
36Ar b pg/g - 3.418 (0.048) 3.45 (0.048) - 3.643 (0.064) 3.514 (0.048) - 2.423 (0.032) 2.263 (0.032) - 3.498 (0.064) 3.402 (0.048) - 3.546 (0.064) 3.787 (0.064) - 5.408 (0.08) 5.328 (0.08) - 2.359 (0.032) 2.198 (0.032) - 3.001 (0.048) 3.033 (0.048) - 2.231 (0.032) 2.311 (0.032) - 1.685 (0.032) 1.749 (0.032) - 4.461 (0.08) 4.589 (0.064) - 1.942 (0.032) 1.878 (0.032) - 3.033 (0.048) 3.242 (0.048) - 4.686 (0.08) 4.589 (0.08) - 3.739 (0.064) 3.755 (0.064) - 2.263 (0.032) 2.311 (0.032) - 2.953 (0.048) 2.84 (0.048) - 1.861 (0.032) 1.765 (0.032) - 2.824 (0.048) 2.969 (0.048)
40Arrad b ng/g - 0.084 (0.003) 0.076 (0.002) - 0.061 (0.005) 0.061 (0.005) - 0.143 (0.003) 0.135 (0.003) - 0.063 (0.004) 0.065 (0.004) - 0.076 (0.007) 0.078 (0.008) - 0.12 (0.007) 0.119 (0.002) - 0.082 (0.003) 0.078 (0.003) - 0.093 (0.002) 0.091 (0.002) - 0.088 (0.002) 0.088 (0.002) - 0.075 (0.002) 0.072 (0.002) - 0.095 (0.005) 0.097 (0.005) - 0.037 (0.002) 0.033 (0.002) - 0.074 (0.003) 0.079 (0.004) - 0.127 (0.006) 0.125 (0.002) - 0.114 (0.005) 0.112 (0.005) - 0.052 (0.002) 0.05 (0.002) - 0.115 (0.003) 0.115 (0.003) - 0.016 (0.005) 0.019 (0.004) - 0.008 (0.003) 0.005 (0.003)
40Ar/36Ar b - 318.2 (0.7) 315.9 (0.5) - 310.9 (1.3) 311.6 (1.3) - 349.0 (1.0) 349.3 (1.1) - 312.1 (1.0) 313.1 (1.0) - 315.3 (2.0) 314.6 (2.0) - 315.9 (1.2) 316.1 (1.2) - 327.3 (1.3) 328.1 (1.2) - 333.9 (0.6) 322.9 (0.6) - 331.2 (0.7) 333.0 (0.7) - 336.1 (1.0) 333.0 (1.1) - 315.2 (0.9) 315.1 (0.9) - 313.1 (1.0) 311.8 (1.0) - 318.0 (1.0) 318.0 (1.0) - 320.4 (1.2) 320.5 (1.2) - 323.4 (1.2) 322.7 (1.2) - 316.6 (0.9) 315.2 (0.9) - 330.9 (1.0) 332.2 (1.0) - 303.7 (2.5) 305.9 (1.9) - 298.7 (0.9) 297.5 (0.9)
air fraction b % - 93.0 93.7 - 95.2 95.0 - 84.8 84.7 - 94.8 94.5 - 93.9 94.1 - 93.7 93.6 - 90.4 90.2 - 91.4 91.7 - 89.4 89.7 - 88.1 88.9 - 93.9 93.9 - 94.5 94.9 - 93.1 93.1 - 92.4 92.4 - 91.5 91.7 - 93.5 93.9 - 89.5 89.1 - 97.5 96.8 - 99.1 99.5
(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
DHA-16 K pub powder 1.0 g 20191111145908-463840
DHA-16b-1 pub 20150223085448-380720
DHA-16b-2 pub 20150223085458-355968
DHA-13 K pub powder 1.0 g 20191111145822-934287
DHA-13-1 pub 20150331091350-789228
DHA-13-2 pub 20150331091402-800907
DHA-10 K pub powder 0.6 g 20191111145723-603627
DHA-10b-1 pub 20150223085322-850669
DHA-10b-2 pub 20150223085329-256226
dha-4 K pub powder 0.2 g 20191111143416-324375
dha-4-1 pub 20150224085428-785568
dha-4-2 pub 20150224085445-097885
dha-6a K pub powder 0.4 g 20191111144755-493321
dha-6a-Ar1 pub 20191202141813-127005
dha-6a-Ar2 pub 20191202141813-208487
DHA-31 K pub powder 0.6 g 20191111144913-111795
GM DHA-31-1 pub 20150223085930-779420
GM DHA-31-2 pub 20150223085935-444973
DHA-34 K pub powder 1.0 g 20191111145043-108159
DHA-34-1 pub 20150223090020-385440
DHA-34-2 pub 20150223090027-563120
DHA-36A K pub powder 0.8 g 20191111144542-310820
DHA-36Ab-1 pub 20150223085831-005404
DHA-36Ab-2 pub 20150223085840-116855
DHA-9_K pub powder 20191203095549-222544
DHA-9_Ar1 pub 20191203095549-076097
DHA-9_Ar2 pub 20191203095549-959658
DHA-20 K pub powder 1.2 g 20191111150203-116136
DHA-20-1 pub 20150223085045-915880
DHA-20-2 pub 20150223085106-968847
DHA-24 K pub powder 0.6 g 20191111141841-966631
DHA-24-1 pub 20150223085345-893019
DHA-24-2 pub 20150223085352-431054
DHA-26 K pub powder 1.0 g 20191111144424-891681
DHA-26-1 pub 20150223085150-135334
DHA-26-2 pub 20150223085157-806774
dha-29 K pub powder 1.2 g 20191111142931-773855
dha-29-1 pub 20150223090908-850566
dha-29-2 pub 20150223090915-656678
dha-30 K pub powder 0.8 g 20191111145136-513146
dha-30-1 pub 20150223090802-417534
dha-30-2 pub 20150223090810-711578
DHA-40 K pub powder 1.2 g 20191111144114-421768
DHA-40-1 pub 20150223085955-251654
DHA-40-2 pub 20150223090003-272990
DHA-41 K pub powder 1.0 g 20191111143936-174706
DHA-41-1 pub 20150223085129-072154
DHA-41-2 pub 20150223085135-313606
DHA-45 K pub powder 1.8 g 20191111143227-550781
DHA-45-1 pub 20150223085417-070941
DHA-45-2 pub 20150223085426-797126
dha-18 K pub powder 1.0 g 20191111150110-852808
dha-18_Ar1 pub 20191203110501-210612
dha-18_Ar2 pub 20191203110501-359526
DHA-1 K pub powder 0.8 g 20191111141609-119711
DHA-1-1 pub 20150223085233-953510
DHA-1-2 pub 20150223085242-668926

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
DHA-16 K DHA-16b-1 DHA-16b-2 DHA-13 K DHA-13-1 DHA-13-2 DHA-10 K DHA-10b-1 DHA-10b-2 dha-4 K dha-4-1 dha-4-2 dha-6a K dha-6a-Ar1 dha-6a-Ar2 DHA-31 K GM DHA-31-1 GM DHA-31-2 DHA-34 K DHA-34-1 DHA-34-2 DHA-36A K DHA-36Ab-1 DHA-36Ab-2 DHA-9_K DHA-9_Ar1 DHA-9_Ar2 DHA-20 K DHA-20-1 DHA-20-2 DHA-24 K DHA-24-1 DHA-24-2 DHA-26 K DHA-26-1 DHA-26-2 dha-29 K dha-29-1 dha-29-2 dha-30 K dha-30-1 dha-30-2 DHA-40 K DHA-40-1 DHA-40-2 DHA-41 K DHA-41-1 DHA-41-2 DHA-45 K DHA-45-1 DHA-45-2 dha-18 K dha-18_Ar1 dha-18_Ar2 DHA-1 K DHA-1-1 DHA-1-2