{"id":"W4383912773","doi":"10.1016/j.marpetgeo.2023.106408","title":"Expanded marine anoxia at the Cambrian-Ordovician transition: Evidence from lime mudstone I/Ca and δ238U signatures of the GSSP in western Newfoundland, Canada","year":2023,"lang":"en","type":"article","venue":"Marine and Petroleum Geology","topic":"Paleontology and Stratigraphy of Fossils","field":"Earth and Planetary Sciences","cited_by":3,"is_retracted":false,"has_abstract":false,"ca_institutions":"Memorial University of Newfoundland","funders":"","keywords":"Geology; Ordovician; Paleozoic; Sedimentary depositional environment; Paleontology; Continental margin; Extinction event; Global Boundary Stratotype Section and Point; Continental shelf; Sedimentary rock; Anoxic waters; Proterozoic; Glacial period; Chemocline; Geochemistry; Oceanography; Biostratigraphy; Tectonics","routes":{"ca_aff":true,"ca_fund":false,"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":[0.0002589891,0.0001864912,0.0002582306,0.002757312,0.001680059,0.00127443,0.0007313385,0.0003190351,0.001516157],"category_scores_gemma":[0.0006710712,0.0002318895,0.0001615084,0.003746218,0.00130184,0.0005149811,0.001031931,0.0003145756,0.0001675516],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.005976901,"about_ca_system_score_gemma":0.004751742,"about_ca_topic_candidate":true,"about_ca_topic_consensus":true,"about_ca_topic_score_codex":0.9550191,"about_ca_topic_score_gemma":0.987112,"domain_scores_codex":[0.9997723,0.00001355979,0.0000158933,0.00004924062,0.00004750215,0.0001015638],"domain_scores_gemma":[0.9991917,0.00006006276,0.0001702857,0.00002664049,0.0003713537,0.0001799099],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0001067823,0.00002119046,0.9875524,0.00002834302,0.00005335666,0.0002791174,0.002241174,0.0001057004,0.002897499,0.0001234628,0.0002817124,0.006309214],"study_design_scores_gemma":[9.803992e-7,0.000002862941,0.9989718,0.000006889039,0.000004346778,0.00002477985,0.000659148,0.00002437118,0.00004494137,0.000005781701,0.0002527385,0.000001456203],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9977888,0.000217058,0.00002844793,0.00005210057,0.00000224662,0.000004334419,0.0004295665,0.000002945349,0.001474426],"genre_scores_gemma":[0.9991944,0.000143859,0.00003852942,0.00002735597,0.000002181515,0.000002517531,0.0002467722,0.000002442969,0.000342026],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.04498088,"threshold_uncertainty_score":0.09049153,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.009790065625158752,"score_gpt":0.2027561516011782,"score_spread":0.1929660859760195,"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."}}