Table 4.
Magnesium isotope ratios and minor elemental abundances of AOA olivine from Kaba and DOM 08006 obtained with SIMS
Sample/Location #a | δ25Mgdcm-3 (‰) | Unc. (+/−) (2σ) | δ26Mgdsm-3 (‰) | Unc. (+/−) (2σ) | δ26Mg* (‰) | Unc. (2σ) | CaO (wt%) | Unc. (2σ) | Cr2O3 (wt%) | Unc. (2σ) | FeO (wt%) | Unc. (2σ) | MnO (wt%) | Unc. (2σ) | MnO/FeO | Unc. (2σ) | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Kaba (CV3.1) | ||||||||||||||||||||
K27 | ||||||||||||||||||||
#3b | −0.39 | 0.30 | 0.31 | −0.68 | 0.59 | 0.59 | 0.04 | 0.06 | 0.128 | 0.004 | 0.110 | 0.007 | 0.324 | 0.017 | 0.027 | 0.002 | 0.08 | 0.01 | ||
#4 | −0.42 | 0.31 | 0.31 | −0.78 | 0.60 | 0.60 | −0.01 | 0.06 | 0.150 | 0.005 | 0.081 | 0.005 | 0.064 | 0.002 | 0.008 | 0.002 | 0.13 | 0.04 | ||
#5 | −0.25 | 0.30 | 0.31 | −0.48 | 0.59 | 0.59 | −0.03 | 0.06 | 0.158 | 0.005 | 0.083 | 0.005 | 0.065 | 0.003 | 0.008 | 0.001 | 0.12 | 0.02 | ||
#6 | −0.51 | 0.30 | 0.33 | −0.95 | 0.59 | 0.62 | 0.00 | 0.06 | 0.230 | 0.022 | 0.057 | 0.004 | 0.116 | 0.003 | 0.009 | 0.001 | 0.08 | 0.01 | ||
#7 | −0.64 | 0.31 | 0.31 | −1.21 | 0.60 | 0.60 | −0.01 | 0.06 | 0.202 | 0.017 | 0.113 | 0.007 | 0.072 | 0.003 | 0.024 | 0.001 | 0.34 | 0.02 | ||
#8 | −0.69 | 0.31 | 0.31 | −1.12 | 0.60 | 0.60 | 0.16 | 0.06 | 0.136 | 0.005 | 0.105 | 0.007 | 0.081 | 0.003 | 0.007 | 0.002 | 0.09 | 0.02 | ||
#9b | −0.23 | 0.32 | 0.32 | −0.38 | 0.61 | 0.61 | 0.01 | 0.06 | 0.089 | 0.006 | 0.138 | 0.012 | 0.184 | 0.006 | 0.098 | 0.004 | 0.53 | 0.03 | ||
Average & 2SD | −0.45 | 0.35 | 0.35 | −0.80 | 0.63 | 0.63 | 0.02 | 0.13 | 0.156 | 0.094 | 0.098 | 0.037 | 0.129 | 0.192 | 0.026 | 0.066 | 0.20 | 0.59 | ||
DOM 08006 (CO3.01) | ||||||||||||||||||||
501 | ||||||||||||||||||||
#1_outer left partc | −0.42 | 0.44 | 0.44 | −0.55 | 0.87 | 0.87 | 0.17 | 0.24 | 0.119 | 0.003 | 0.188 | 0.006 | 0.072 | 0.003 | 0.088 | 0.001 | 1.21 | 0.06 | ||
#2 | −3.31 | 0.44 | 0.44 | −6.27 | 0.86 | 0.86 | 0.09 | 0.24 | 0.082 | 0.002 | 0.177 | 0.010 | 0.073 | 0.002 | 0.108 | 0.004 | 1.49 | 0.07 | ||
#3 | −2.90 | 0.40 | 0.40 | −5.50 | 0.80 | 0.80 | 0.10 | 0.24 | 0.165 | 0.005 | 0.100 | 0.005 | 0.058 | 0.002 | 0.032 | 0.003 | 0.55 | 0.05 | ||
#4 | −3.30 | 0.42 | 0.42 | −6.21 | 0.84 | 0.84 | 0.15 | 0.24 | 0.189 | 0.004 | 0.072 | 0.003 | 0.052 | 0.001 | 0.028 | 0.002 | 0.54 | 0.04 | ||
#5_outer left partc | −0.66 | 0.43 | 0.43 | −1.20 | 0.85 | 0.85 | 0.01 | 0.24 | 0.151 | 0.005 | 0.117 | 0.005 | 0.071 | 0.003 | 0.078 | 0.007 | 1.10 | 0.11 | ||
#6 | −3.79 | 0.45 | 0.45 | −7.27 | 0.92 | 0.92 | 0.05 | 0.21 | 0.128 | 0.003 | 0.093 | 0.004 | 0.059 | 0.002 | 0.051 | 0.003 | 0.87 | 0.06 | ||
#7 | −3.08 | 0.46 | 0.46 | −5.85 | 0.93 | 0.93 | 0.05 | 0.21 | 0.142 | 0.003 | 0.163 | 0.005 | 0.073 | 0.002 | 0.093 | 0.003 | 1.28 | 0.05 | ||
Average (outer left) & 2SD | −0.54 | 0.34 | 0.34 | −0.87 | 0.93 | 0.93 | 0.09 | 0.24 | 0.135 | 0.046 | 0.153 | 0.100 | 0.072 | 0.003 | 0.083 | 0.014 | 1.16 | 0.21 | ||
Average (#2–4 & #6–7) & 2SD | −3.28 | 0.67 | 0.67 | −6.22 | 1.32 | 1.32 | 0.09 | 0.08 | 0.142 | 0.081 | 0.121 | 0.093 | 0.063 | 0.019 | 0.063 | 0.073 | 0.99 | 1.19 | ||
502 | ||||||||||||||||||||
#1 | −0.62 | 0.44 | 0.44 | −1.16 | 0.85 | 0.85 | −0.05 | 0.24 | 0.033 | 0.001 | 0.320 | 0.011 | 0.063 | 0.002 | 0.074 | 0.003 | 1.18 | 0.06 | ||
#2 | −0.58 | 0.44 | 0.44 | −0.87 | 0.85 | 0.85 | 0.14 | 0.24 | 0.045 | 0.002 | 0.316 | 0.010 | 0.078 | 0.004 | 0.084 | 0.004 | 1.08 | 0.08 | ||
#3 | −0.59 | 0.41 | 0.41 | −0.92 | 0.77 | 0.77 | 0.13 | 0.24 | 0.037 | 0.002 | 0.321 | 0.011 | 0.075 | 0.002 | 0.314 | 0.015 | 4.20 | 0.23 | ||
#4 | −0.50 | 0.40 | 0.40 | −0.90 | 0.77 | 0.77 | −0.03 | 0.24 | 0.037 | 0.001 | 0.295 | 0.010 | 0.072 | 0.002 | 0.283 | 0.002 | 3.92 | 0.10 | ||
Average & 2SD | −0.57 | 0.11 | 0.11 | −0.96 | 0.26 | 0.26 | 0.05 | 0.21 | 0.038 | 0.010 | 0.313 | 0.017 | 0.072 | 0.013 | 0.189 | 0.255 | 2.62 | 3.57 | ||
503 | ||||||||||||||||||||
#1 | −1.72 | 0.45 | 0.45 | −3.34 | 0.93 | 0.93 | −0.07 | 0.21 | 0.039 | 0.001 | 0.212 | 0.008 | 0.062 | 0.003 | 0.088 | 0.002 | 1.42 | 0.07 | ||
#2 | −1.85 | 0.44 | 0.44 | −3.48 | 0.91 | 0.91 | 0.06 | 0.21 | 0.063 | 0.001 | 0.164 | 0.006 | 0.061 | 0.002 | 0.024 | 0.002 | 0.40 | 0.04 | ||
#3 | −2.06 | 0.46 | 0.46 | −3.87 | 0.94 | 0.94 | 0.05 | 0.21 | 0.052 | 0.003 | 0.195 | 0.008 | 0.063 | 0.002 | 0.042 | 0.002 | 0.67 | 0.05 | ||
#4 | −2.26 | 0.47 | 0.47 | −4.24 | 0.94 | 0.94 | 0.06 | 0.21 | 0.052 | 0.002 | 0.152 | 0.005 | 0.072 | 0.004 | 0.067 | 0.003 | 0.93 | 0.07 | ||
Average & 2SD | −1.97 | 0.48 | 0.48 | −3.74 | 0.81 | 0.81 | 0.03 | 0.13 | 0.051 | 0.020 | 0.181 | 0.039 | 0.065 | 0.010 | 0.055 | 0.056 | 0.86 | 0.87 | ||
505 | ||||||||||||||||||||
#1 | −0.86 | 0.46 | 0.46 | −1.51 | 0.94 | 0.94 | 0.08 | 0.21 | 0.060 | 0.001 | 0.259 | 0.010 | 0.080 | 0.004 | 0.135 | 0.006 | 1.70 | 0.11 | ||
#2 | −0.68 | 0.40 | 0.40 | −1.18 | 0.84 | 0.84 | 0.13 | 0.21 | 0.079 | 0.003 | 0.128 | 0.004 | 0.058 | 0.003 | 0.026 | 0.002 | 0.45 | 0.05 | ||
#3 | −1.17 | 0.42 | 0.42 | −2.30 | 0.88 | 0.88 | −0.06 | 0.21 | 0.066 | 0.002 | 0.179 | 0.006 | 0.062 | 0.002 | 0.073 | 0.002 | 1.18 | 0.05 | ||
#4 | −1.06 | 0.41 | 0.41 | −2.15 | 0.86 | 0.86 | −0.10 | 0.21 | 0.075 | 0.003 | 0.129 | 0.004 | 0.057 | 0.002 | 0.019 | 0.002 | 0.33 | 0.03 | ||
Average & 2SD | −0.94 | 0.44 | 0.44 | −1.79 | 1.05 | 1.05 | 0.02 | 0.22 | 0.070 | 0.017 | 0.174 | 0.087 | 0.064 | 0.021 | 0.063 | 0.108 | 0.99 | 1.71 | ||
511 | ||||||||||||||||||||
#1 | −2.36 | 0.44 | 0.44 | −4.49 | 0.86 | 0.86 | 0.08 | 0.25 | 0.090 | 0.002 | 0.096 | 0.006 | 0.046 | 0.003 | 0.020 | 0.003 | 0.44 | 0.06 | ||
#2 | −2.91 | 0.48 | 0.48 | −5.57 | 0.92 | 0.92 | 0.00 | 0.25 | 0.077 | 0.002 | 0.123 | 0.005 | 0.044 | 0.003 | 0.090 | 0.005 | 2.02 | 0.16 | ||
#3 | −2.52 | 0.43 | 0.43 | −5.02 | 0.85 | 0.85 | −0.15 | 0.25 | 0.101 | 0.002 | 0.128 | 0.007 | 0.044 | 0.001 | 0.095 | 0.002 | 2.14 | 0.08 | ||
#4 | −3.34 | 0.46 | 0.46 | −6.41 | 0.89 | 0.89 | 0.03 | 0.25 | 0.109 | 0.005 | 0.113 | 0.007 | 0.056 | 0.003 | 0.005 | 0.001 | 0.09 | 0.01 | ||
Average & 2SD | −2.78 | 0.87 | 0.87 | −5.37 | 1.64 | 1.64 | −0.01 | 0.20 | 0.094 | 0.027 | 0.115 | 0.020 | 0.048 | 0.011 | 0.052 | 0.093 | 1.10 | 1.97 | ||
512 | ||||||||||||||||||||
#1 | −1.09 | 0.47 | 0.47 | −1.96 | 0.94 | 0.94 | 0.05 | 0.21 | 0.040 | 0.001 | 0.273 | 0.009 | 0.068 | 0.002 | 0.215 | 0.003 | 3.18 | 0.10 | ||
#2 | −1.10 | 0.47 | 0.47 | −1.97 | 0.94 | 0.94 | 0.06 | 0.21 | 0.037 | 0.001 | 0.233 | 0.008 | 0.068 | 0.002 | 0.088 | 0.002 | 1.28 | 0.05 | ||
#3 | −1.25 | 0.46 | 0.46 | −2.30 | 0.92 | 0.92 | 0.03 | 0.21 | 0.032 | 0.001 | 0.245 | 0.008 | 0.066 | 0.002 | 0.048 | 0.002 | 0.73 | 0.04 | ||
Average & 2SD | −1.15 | 0.18 | 0.18 | −2.08 | 0.38 | 0.38 | 0.05 | 0.04 | 0.036 | 0.008 | 0.250 | 0.029 | 0.067 | 0.003 | 0.117 | 0.174 | 1.74 | 2.59 | ||
513 | ||||||||||||||||||||
#1 | −0.47 | 0.42 | 0.42 | −0.78 | 0.82 | 0.82 | 0.13 | 0.25 | 0.269 | 0.006 | 0.055 | 0.003 | 0.042 | 0.003 | 0.0039 | 0.0009 | 0.09 | 0.02 | ||
#2 | −0.83 | 0.45 | 0.45 | −1.44 | 0.87 | 0.87 | 0.12 | 0.25 | 0.249 | 0.006 | 0.062 | 0.004 | 0.032 | 0.001 | 0.0046 | 0.0011 | 0.14 | 0.03 | ||
#3 | −0.57 | 0.44 | 0.44 | −1.02 | 0.86 | 0.86 | 0.06 | 0.25 | 0.283 | 0.007 | 0.078 | 0.004 | 0.039 | 0.001 | 0.0040 | 0.0005 | 0.10 | 0.01 | ||
Average & 2SD | −0.62 | 0.37 | 0.37 | −1.08 | 0.67 | 0.67 | 0.10 | 0.08 | 0.267 | 0.035 | 0.065 | 0.017 | 0.038 | 0.010 | 0.004 | 0.001 | 0.11 | 0.04 |
Analysis points are shown in Electronic Annex EA3.
Average values are listed for minor element data. Individual data are reported in Electronic Annex EA4–3–3.
These data are obtained from an outer left part of AOA 501, which shows compact textures relative to the most part of this AOA.