{"id":"W2900040515","doi":"10.1016/j.gca.2018.10.030","title":"Methane sources and sinks in continental sedimentary systems: New insights from paired clumped isotopologues 13CH3D and 12CH2D2","year":2018,"lang":"en","type":"article","venue":"Geochimica et Cosmochimica Acta","topic":"Methane Hydrates and Related Phenomena","field":"Environmental Science","cited_by":99,"is_retracted":false,"has_abstract":false,"ca_institutions":"University of Toronto","funders":"Natural Sciences and Engineering Research Council of Canada; Nuclear Waste Management Organization; Connecticut Department of Energy and Environmental Protection","keywords":"Methanogenesis; Methane; Geology; Sedimentary organic matter; Sedimentary rock; Isotopologue; Geochemistry; Earth science; Chemistry","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":["metaepi_narrow"],"consensus_categories":[],"category_scores_codex":[0.0002948614,0.0004321662,0.0005703673,0.0001330822,0.0001843055,0.0001156558,0.0003317338,0.0002806332,0.0006460483],"category_scores_gemma":[0.00005460772,0.0003608161,0.00006199195,0.0002690737,0.0007646345,0.0003515176,0.0006151318,0.0004509705,0.0001125689],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00008382725,"about_ca_system_score_gemma":0.00003065543,"about_ca_topic_candidate":true,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.01281943,"about_ca_topic_score_gemma":0.001570083,"domain_scores_codex":[0.9972812,0.000387977,0.0005545917,0.0008880371,0.0003390577,0.0005491457],"domain_scores_gemma":[0.9986734,0.0002898729,0.0002237169,0.0004153045,0.00001059879,0.0003870986],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"observational","study_design_scores_codex":[0.001181639,0.0006775033,0.05539184,0.00007261396,0.0004741387,0.00008419201,0.0330333,0.00006514151,0.8828661,0.0004053248,0.02184405,0.003904145],"study_design_scores_gemma":[0.03526028,0.00442881,0.529211,0.001569048,0.001230035,0.0005381618,0.02190965,0.03765321,0.1823349,0.05456901,0.1233885,0.007907421],"study_design_candidate":"bench_or_experimental","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9928415,0.001612983,0.00001587032,0.002185928,0.0003911445,0.0005907002,0.00005339567,0.00009433064,0.002214154],"genre_scores_gemma":[0.9960926,0.0005441418,0.001117879,0.001314,0.000191881,0.00001949714,0.0001377137,0.00004075589,0.0005415049],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.7005312,"threshold_uncertainty_score":0.9998844,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01042157137098383,"score_gpt":0.2188279814959458,"score_spread":0.2084064101249619,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}