{"id":"W1491740764","doi":"10.1089/ast.2006.0096","title":"Hydrogeologic Controls on Episodic H <sub>2</sub> Release from Precambrian Fractured Rocks—Energy for Deep Subsurface Life on Earth and Mars","year":2007,"lang":"en","type":"article","venue":"Astrobiology","topic":"Methane Hydrates and Related Phenomena","field":"Environmental Science","cited_by":160,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Toronto","funders":"University of Toronto","keywords":"Precambrian; Abiogenic petroleum origin; Geology; Geochemistry; Archean; Evaporite; Groundwater; Proterozoic; Sedimentary rock; Paleontology; Methane; Chemistry; Tectonics","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0001524063,0.0001959903,0.0002139667,0.0005858392,0.0005451067,0.0005811318,0.000252624,0.0002263638,0.0008790927],"category_scores_gemma":[0.0004770414,0.0002042271,0.0001133812,0.0003826062,0.0008204631,0.000339206,0.0006166206,0.0001787056,0.0001325408],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0008043863,"about_ca_system_score_gemma":0.0002650728,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.01433221,"about_ca_topic_score_gemma":0.0245919,"domain_scores_codex":[0.9998757,0.00001696086,0.000008000533,0.00003560905,0.0000251252,0.00003863416],"domain_scores_gemma":[0.9997301,0.00004106406,0.00009702853,0.00001909798,0.00005319302,0.00005964549],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0008520088,0.00004712764,0.5401377,0.00007911919,0.00006890851,0.0005729162,0.001306446,0.0003288283,0.4473592,0.0003711033,0.0001777568,0.008698925],"study_design_scores_gemma":[0.000002341587,0.00004245972,0.9944594,0.000002104822,0.000005671618,0.00005884714,0.0002827382,0.0000983269,0.004722683,0.00003742936,0.0002845533,0.000003557527],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9993788,0.00008830974,0.00004231135,0.00001255736,8.317145e-7,0.000003281734,0.000114702,0.000003244233,0.000355996],"genre_scores_gemma":[0.9996405,0.00005234667,0.00004760049,0.000006789422,0.000001650421,0.000003212076,0.0001406226,0.000002582781,0.0001047988],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.01433221,"threshold_uncertainty_score":0.02849758,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.005592880325650302,"score_gpt":0.1936966089749904,"score_spread":0.1881037286493401,"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."}}