{"id":"W4224861095","doi":"10.3389/feart.2022.833609","title":"Shale Heavy Metal Isotope Records of Low Environmental O2 Between Two Archean Oxidation Events","year":2022,"lang":"en","type":"article","venue":"Frontiers in Earth Science","topic":"Geochemistry and Elemental Analysis","field":"Earth and Planetary Sciences","cited_by":15,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Waterloo","funders":"Natural Sciences and Engineering Research Council of Canada; Nuclear Safety and Security Commission; National Aeronautics and Space Administration; National Science Foundation","keywords":"Archean; Geology; Authigenic; Geochemistry; Craton; Early Earth; Oil shale; Precambrian; Sedimentary rock; Supercontinent; Paleontology","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":["insufficient_payload"],"consensus_categories":[],"category_scores_codex":[0.0009737209,0.0001055546,0.0001888281,0.0001946091,0.0003617264,0.00001703073,0.0005318731,0.00001652136,0.001963943],"category_scores_gemma":[0.00001830197,0.0001059886,0.00006683043,0.0007866343,0.0002741925,0.0003592671,0.00008474172,0.0001674133,0.00002058303],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00002255996,"about_ca_system_score_gemma":0.00006716122,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0007384523,"about_ca_topic_score_gemma":0.0001531682,"domain_scores_codex":[0.998213,0.00008003495,0.0002759817,0.0003723287,0.000704481,0.000354193],"domain_scores_gemma":[0.9995411,0.00001704915,0.0001179626,0.0002007219,0.000007122281,0.0001160118],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0000206789,0.00003595092,0.9772274,0.000004317206,0.000009275645,0.000002931147,0.0001451607,0.003518632,0.002205117,0.000001360216,0.0000779055,0.01675125],"study_design_scores_gemma":[0.0003606502,0.0001552674,0.9610214,0.000006030603,0.00001721963,0.000004648846,0.001776424,0.01140982,0.02376176,0.0006970255,0.0006062248,0.0001835571],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9977591,0.0001429598,0.0003092637,0.0000759705,0.0003145046,0.0001194158,0.0001810739,0.000007852755,0.001089827],"genre_scores_gemma":[0.9963264,0.00001473923,0.003007131,0.00003817217,0.00003217446,0.000002631882,0.0002265918,0.000001743947,0.0003503664],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.02155664,"threshold_uncertainty_score":0.9989484,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.008024645319058462,"score_gpt":0.2005569415882884,"score_spread":0.1925322962692299,"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."}}