Bibliographic record
Abstract
Isomerizations of methyldibenzothiophene from Neogene mudstones in northeast Japan were examined as a maturity parameter of organic matter during the diagenesis to catagenesis stage．The relationship between methyldibenzothiophene（MDBT）ratio（MDR：4-MDBT/1-MDBT）and vitrinite reflectance（Ro）from the Tojo TS-1 well，which underwent subsidence at low heating rate，can be described by the equation：MDR=15.1 Ro-5.35（n=11，r=0.85，Ro=0.4-0.7%）．This equation is similar to that from Elmworth 6-28-68-13 W 6 M in Western Canada．New combination of the 1-MDBT，（2- ＋ 3-）MDBT and 4-MDBT isoomers are used to be a new maturity parameter which is useful in the high maturity stage，up to 3% Ro．The ratio（2- ＋ 3-）MDBT to（1- + 2- + 3- + 4-）MDBT increases from 0.2 to 0.6 over the range 0.4-3.0% Ro．The ratio（2- + 3-）MDBT to 4-MDBT was constant at about 0.5 in the range 0.4-1.5% Ro，and then increases from 0.5 to 4.5 in the range 1.5-2.9% Ro．Therefore，the（2- + 3-）/（1- + 2- + 3- + 4-）MDBT ratio is possibly on effective maturity indicator through the oil generation stage to higher maturity stages such as the dry gas zone．After the catagenesis stage，（2- ＋ 3-）/（4-）MDBT ratio and high Ro gradients could assist interpretation of scattered（2- ＋ 3-）/（1- + 2- + 3- + 4-）MDBT ratios with low gradient．
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.002 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; both teacher heads agree on what is shown here.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".