Table 2.

In situ carbon isotope analyses by SIMS on graphite band from TVA294-659.6 and standards*

Analysis no.Analysis spot name13C/12C (uncorr.)Error12C count rate (counts s−1)12C countsI primary (nA)13C/12C (IMF corr.)δ13C (‰)Internal error (1σ)External error (2σ)
1N198a@21.04659E − 024.12E − 068.67E + 051.30E + 083.271.11208E − 02−9.20.42.0
2N198a@31.04666E − 024.53E − 068.72E + 051.31E + 083.251.11215E − 02−9.20.42.0
3N198a@41.04786E − 024.18E − 068.68E + 051.30E + 083.211.11343E − 02−8.00.42.0
4N198a@51.04638E − 024.08E − 068.69E + 051.30E + 083.181.11186E − 02−9.40.42.0
5N198a@61.04796E − 023.87E − 068.64E + 051.30E + 083.161.11354E − 02−8.00.42.0
6N198a@71.04731E − 024.14E − 068.22E + 051.23E + 083.081.11284E − 02−8.60.42.0
7N198a@81.04715E − 023.39E − 068.49E + 051.27E + 083.121.11267E − 02−8.70.32.0
8N198a@91.04735E − 024.04E − 068.56E + 051.28E + 083.141.11289E − 02−8.50.42.0
9N198a@101.04856E − 023.97E − 068.62E + 051.29E + 083.091.11417E − 02−7.40.42.0
10N198a@111.04895E − 024.34E − 068.65E + 051.30E + 083.121.11459E − 02−7.00.42.0
11N198a@121.04829E − 024.40E − 068.57E + 051.29E + 083.111.11389E − 02−7.60.42.0
12N198a@131.04928E − 024.27E − 068.56E + 051.28E + 083.061.11494E − 02−6.70.42.0
13N198a@141.04770E − 024.50E − 068.43E + 051.26E + 083.081.11326E − 02−8.20.42.0
14N198a@151.04857E − 024.09E − 068.44E + 051.27E + 083.091.11418E − 02−7.40.42.0
15N198a@161.04869E − 024.44E − 068.50E + 051.27E + 083.051.11431E − 02−7.30.42.0
16BH_graphite@11.04838E − 024.73E − 067.24E + 051.09E + 083.041.11398E − 02−7.60.52.1
17BH_graphite@21.04950E − 024.54E − 067.05E + 051.06E + 083.021.11517E − 02−6.50.42.0
18BH_graphite@31.04853E − 024.11E − 067.20E + 051.08E + 082.991.11414E − 02−7.40.42.0
21BH_graphite@61.04610E − 024.90E − 066.03E + 059.04E + 073.111.11156E − 02−9.70.52.1
22BH_graphite@71.04700E − 025.30E − 066.16E + 059.23E + 073.071.11252E − 02−8.90.52.1
23BH_graphite@81.04810E − 024.66E − 066.06E + 059.09E + 073.031.11368E − 02−7.80.42.1
24BH_graphite@91.04799E − 024.79E − 066.23E + 059.35E + 072.841.11357E − 02−7.90.52.1
25BH_graphite@101.04781E − 024.72E − 066.21E + 059.32E + 072.761.11338E − 02−8.10.52.1
26BH_graphite@111.04712E − 024.40E − 066.21E + 059.31E + 072.921.11264E − 02−8.70.42.0
34BH_graphite@121.04775E − 024.88E − 065.89E + 058.84E + 073.301.11331E − 02−8.10.52.1
35BH_graphite@131.04899E − 024.83E − 065.74E + 058.60E + 073.281.11463E − 02−7.00.52.1
36BH_graphite@141.04869E − 024.91E − 065.61E + 058.41E + 073.271.11431E − 02−7.30.52.1
37BH_graphite@151.04739E − 025.13E − 065.16E + 057.73E + 073.041.11293E − 02−8.50.52.1
38BH_graphite@161.04632E − 025.79E − 065.39E + 058.09E + 073.041.11179E − 02−9.50.62.2
39BH_graphite@171.04860E − 025.27E − 065.12E + 057.68E + 073.031.11422E − 02−7.30.52.1
46BH_graphite@181.04743E − 025.12E − 065.24E + 057.86E + 072.961.11297E − 02−8.50.52.1
47BH_graphite@191.04901E − 025.30E − 065.04E + 057.56E + 072.941.11465E − 02−7.00.52.1
48BH_graphite@201.04813E − 025.32E − 065.09E + 057.63E + 072.901.11372E − 02−7.80.52.1
54BH_graphite2@11.04712E − 024.83E − 066.97E + 051.05E + 083.491.11264E − 02−8.70.52.1
55BH_graphite2@21.04774E − 024.45E − 067.17E + 051.08E + 083.471.11330E − 02−8.20.42.0
56BH_graphite2@31.04744E − 024.59E − 067.31E + 051.10E + 083.441.11298E − 02−8.40.42.0
67BH_graphite2@41.04792E − 024.71E − 067.28E + 051.09E + 083.301.11349E − 02−8.00.42.1
68BH_graphite2@51.04674E − 024.59E − 067.35E + 051.10E + 083.271.11224E − 02−9.10.42.1
69BH_graphite2@61.04747E − 024.38E − 067.43E + 051.11E + 083.261.11301E − 02−8.40.42.0
70BH_graphite2@71.04716E − 024.10E − 067.46E + 051.12E + 083.231.11269E − 02−8.70.42.0
71BH_graphite2@81.04647E − 024.49E − 067.33E + 051.10E + 083.221.11195E − 02−9.40.42.0
72BH_graphite2@91.04865E − 024.72E − 067.12E + 051.07E + 083.201.11427E − 02−7.30.42.1
73BH_graphite2@101.04899E − 024.55E − 067.10E + 051.07E + 083.221.11463E − 02−7.00.42.0
74BH_graphite2@111.04971E − 024.76E − 066.75E + 051.01E + 083.211.11539E − 02−6.30.52.1
79BH_graphite2@131.04540E − 024.95E − 065.81E + 058.71E + 073.071.11081E − 02−10.40.52.1
80BH_graphite2@141.04561E − 025.28E − 065.81E + 058.72E + 073.091.11104E − 02−10.20.52.1
88BH_graphite2@171.04880E − 025.05E − 065.36E + 058.04E + 073.081.11443E − 02−7.20.52.1
106BH_graphite2@201.04763E − 024.67E − 065.49E + 058.23E + 072.831.11318E − 02−8.30.42.1
107BH_graphite2@211.04660E − 024.66E − 065.65E + 058.48E + 072.881.11209E − 02−9.20.42.1
108BH_graphite2@221.04711E − 025.01E − 065.63E + 058.44E + 072.821.11263E − 02−8.80.52.1
57TVA294-6596@11.03354E − 025.36E − 065.73E + 058.60E + 073.431.09821E − 02−21.60.52.1
58TVA294-6596@21.03385E − 025.03E − 065.89E + 058.83E + 073.391.09854E − 02−21.30.52.1
59TVA294-6596@31.03297E − 024.93E − 065.78E + 058.68E + 073.411.09761E − 02−22.10.52.1
60TVA294-6596@41.03323E − 025.47E − 065.71E + 058.57E + 073.381.09788E − 02−21.90.52.1
61TVA294-6596@51.03359E − 024.95E − 065.98E + 058.97E + 073.331.09827E − 02−21.60.52.1
62TVA294-6596@61.03383E − 024.56E − 065.92E + 058.88E + 073.341.09852E − 02−21.30.42.1
63TVA294-6596@71.03362E − 025.73E − 065.56E + 058.34E + 073.311.09830E − 02−21.50.62.2
64TVA294-6596@81.03347E − 026.08E − 065.29E + 057.94E + 073.341.09814E − 02−21.70.62.2
65TVA294-6596@91.03220E − 025.34E − 065.31E + 057.96E + 073.331.09679E − 02−22.90.52.1
66TVA294-6596@101.03383E − 025.38E − 064.94E + 057.41E + 073.321.09852E − 02−21.30.52.1

* The two in-house standards used were diamond N198 (δ13C = −6.0‰, IMF correction factor is −60.8‰) and BH-graphite (δ13C = −8.2‰, IMF correction factor is −58.9‰).