{"id":"W1996404549","doi":"10.1016/j.chemgeo.2013.09.011","title":"Mass-independently fractionated sulfur in Archean paleosols: A large reservoir of negative Δ33S anomaly on the early Earth","year":2013,"lang":"en","type":"article","venue":"Chemical Geology","topic":"Paleontology and Stratigraphy of Fossils","field":"Earth and Planetary Sciences","cited_by":13,"is_retracted":false,"has_abstract":false,"ca_institutions":"University of Manitoba","funders":"Natural Sciences and Engineering Research Council of Canada; National Aeronautics and Space Administration; NASA Astrobiology Institute; University of Cincinnati; Carnegie Institution of Washington; National Science Foundation","keywords":"Pyrite; Archean; Geology; Sulfur; Weathering; Regolith; Early Earth; Paleosol; Geochemistry; δ34S; Isotopic signature; Organic matter; Sulfate; Sediment; Mineralogy; Quartz; Stable isotope ratio; Paleontology; Astrobiology; Chemistry; Loess; Fluid inclusions","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":[0.0001624645,0.0002148474,0.0001944705,0.001026143,0.0003671701,0.0006155296,0.0002973744,0.0002665432,0.0007630392],"category_scores_gemma":[0.0002336873,0.0002231479,0.0001343981,0.0005785283,0.0005916215,0.0005075197,0.0004835549,0.0001687174,0.0001092039],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0005277774,"about_ca_system_score_gemma":0.0003496439,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.02191576,"about_ca_topic_score_gemma":0.03228996,"domain_scores_codex":[0.9999743,0.000002052555,0.000001949639,0.00001087747,0.000005443538,0.00000544251],"domain_scores_gemma":[0.999911,0.00001513737,0.00001691498,0.00001403531,0.00002793385,0.00001500202],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0007842527,0.0000582444,0.7711665,0.00006093828,0.0001210908,0.0004684106,0.001109259,0.0007866309,0.2097453,0.002024966,0.0002152591,0.01345903],"study_design_scores_gemma":[0.000008287707,0.00002088849,0.9915707,0.000005779228,0.00002271368,0.00008185954,0.0002860082,0.001036824,0.006051617,0.0004817117,0.0004266475,0.000006955878],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9992965,0.0001089587,0.00006257213,0.00002111778,0.000001065732,5.72057e-7,0.00008710724,0.000007828975,0.0004143709],"genre_scores_gemma":[0.9996871,0.00004353747,0.00004119318,0.000004949533,0.000001827799,4.807591e-7,0.00006885342,0.000002939594,0.0001491937],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.02191576,"threshold_uncertainty_score":0.04357642,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01748863357058248,"score_gpt":0.2227261452619994,"score_spread":0.2052375116914169,"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."}}