{"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":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0002210544,0.0002539362,0.0002371444,0.001412816,0.0008456676,0.0005970587,0.0003208974,0.0004613274,0.0008012907],"category_scores_gemma":[0.0004483716,0.000215628,0.0001750645,0.0006792587,0.0006652888,0.0003381381,0.001168067,0.0003645157,0.0002357785],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0008628585,"about_ca_system_score_gemma":0.00030599,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.02227106,"about_ca_topic_score_gemma":0.05569752,"domain_scores_codex":[0.9998828,0.0000107757,0.000008114344,0.00004432951,0.00002304347,0.00003098851],"domain_scores_gemma":[0.9997475,0.00001860859,0.00005335841,0.00002056087,0.00008608519,0.00007394191],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0007919963,0.00007011149,0.9343865,0.00003726404,0.0001002118,0.0007435708,0.004426685,0.0001883736,0.0500075,0.0002208953,0.0001718675,0.008855151],"study_design_scores_gemma":[0.000001535381,0.00001948947,0.9991384,0.000002183074,0.00000420622,0.0000361621,0.0002293069,0.00003587907,0.0003441453,0.00001361734,0.000173321,0.000001765797],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9993648,0.00003199124,0.00002943416,0.000008147475,0.000001029998,0.000001708472,0.00008105614,0.000003161086,0.0004786745],"genre_scores_gemma":[0.9989979,0.00003974951,0.00006586174,0.00001162556,0.000003089853,0.000003508449,0.0003683966,0.000003453644,0.0005065007],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.02227106,"threshold_uncertainty_score":0.04428285,"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."}}