Table 6. Information needed to calculate gas-hydrate saturations with GLT carbon/oxygen data.
Hole identification, station depth (mbsf) |
Processed C/O ratio (COR) |
Sediment porosity (, %) |
Sediment organic carbon content (C, vol%) |
Sediment matrix carbon content (, Avo) |
Sediment matrix oxygen content (, Avo) |
Borehole carbon correction factor (Cb, Avo) |
Borehole oxygen correction factor (Ob, Avo) |
Gas-hydrate saturation (Sh, %) |
164-994C: |
||||||||
228 |
0.025 |
61 |
1.0 |
0.004 |
0.081 |
0.007 |
0.183 |
-4 |
233 |
0.052 |
61 |
0.9 |
0.005 |
0.081 |
0.007 |
0.068 |
+4 |
238 |
0.026 |
60 |
0.9 |
0.005 |
0.080 |
0.007 |
0.183 |
-6 |
243 |
0.034 |
60 |
0.9 |
0.005 |
0.080 |
0.007 |
0.160 |
+21 |
248* |
0.026 |
57 |
0.9 |
0.005 |
0.080 |
0.007 |
0.210 |
0 |
258 |
0.034 |
58 |
1.0 |
0.004 |
0.081 |
0.007 |
0.135 |
0 |
263* |
0.018 |
62 |
1.1 |
0.003 |
0.080 |
0.007 |
0.260 |
0 |
268 |
0.032 |
60 |
1.1 |
0.003 |
0.080 |
0.007 |
0.125 |
0 |
278 |
0.032 |
58 |
1.2 |
0.005 |
0.080 |
0.007 |
0.135 |
-16 |
164-995B: | ||||||||
221 |
0.029 |
60 |
1.0 |
0.003 |
0.082 |
0.007 |
0.182 |
+33 |
226 |
0.031 |
62 |
1.0 |
0.003 |
0.081 |
0.007 |
0.135 |
+8 |
235 |
0.041 |
61 |
1.0 |
0.004 |
0.079 |
0.007 |
0.110 |
+18 |
339 |
0.029 |
56 |
1.0 |
0.004 |
0.080 |
0.007 |
0.183 |
+12 |
349 |
0.038 |
57 |
1.0 |
0.003 |
0.081 |
0.007 |
0.110 |
+10 |
414 |
0.043 |
56 |
1.0 |
0.005 |
0.081 |
0.007 |
0.110 |
+11 |
439 |
0.044 |
56 |
1.0 |
0.005 |
0.080 |
0.007 |
0.110 |
+13 |
449 |
0.049 |
55 |
1.0 |
0.007 |
0.081 |
0.007 |
0.097 |
+7 |
454 |
0.050 |
56 |
1.0 |
0.003 |
0.082 |
0.007 |
0.068 |
+9 |
464* |
0.028 |
55 |
1.0 |
0.007 |
0.081 |
0.007 |
0.210 |
0 |
489 |
0.039 |
55 |
1.0 |
0.005 |
0.081 |
0.007 |
0.110 |
-19 |
514 |
0.038 |
56 |
1.0 |
0.005 |
0.081 |
0.007 |
0.110 |
-16 |
524 |
0.044 |
54 |
1.0 |
0.004 |
0.080 |
0.007 |
0.097 |
0 |
594 |
0.046 |
53 |
1.0 |
0.005 |
0.080 |
0.007 |
0.097 |
0 |
604 |
0.048 |
52 |
1.0 |
0.003 |
0.080 |
0.007 |
0.068 |
-8 |
614 |
0.037 |
53 |
1.0 |
0.004 |
0.080 |
0.007 |
0.135 |
0 |
164-997B: |
||||||||
210 |
0.034 |
62 |
1.1 |
0.007 |
0.081 |
0.007 |
0.161 |
+18 |
361 |
0.051 |
52 |
1.4 |
0.007 |
0.081 |
0.007 |
0.097 |
+5 |
366 |
0.047 |
52 |
1.4 |
0.007 |
0.081 |
0.007 |
0.126 |
+22 |
440 |
0.039 |
56 |
1.6 |
0.008 |
0.081 |
0.007 |
0.161 |
+15 |
445 |
0.033 |
55 |
1.6 |
0.007 |
0.082 |
0.007 |
0.183 |
+8 |
455 |
0.028 |
57 |
1.6 |
0.007 |
0.082 |
0.007 |
0.183 |
-14 |
465 |
0.049 |
57 |
1.6 |
0.004 |
0.086 |
0.007 |
0.074 |
+1 |
475 |
0.043 |
57 |
1.7 |
0.003 |
0.082 |
0.007 |
0.097 |
+13 |
580 |
0.051 |
54 |
1.6 |
0.005 |
0.081 |
0.007 |
0.085 |
+3 |
585 |
0.048 |
53 |
1.6 |
0.005 |
0.081 |
0.007 |
0.097 |
+3 |
Notes: * = resistivity and acoustic transit-time log interpreted water (100%) saturated zones. Avo = Avogadro units.