{"id":"W4389310601","doi":"10.1017/s0016756823000729","title":"U-Pb zircon dates from North American and British Avalonia bracket the Lower–Middle Cambrian boundary interval, with evaluation of the Miaolingian Series as a global unit","year":2023,"lang":"en","type":"article","venue":"Geological Magazine","topic":"Geological and Geochemical Analysis","field":"Earth and Planetary Sciences","cited_by":13,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"University of Cambridge; University of Cincinnati; Deutsche Forschungsgemeinschaft; Massachusetts Institute of Technology; National Science Foundation","keywords":"Geology; Laurentia; Zircon; Paleontology; Sedimentary depositional environment; Onlap; Unconformity; Diachronous; Series (stratigraphy); Ordovician; Sedimentary rock; Structural basin","routes":{"ca_aff":false,"ca_fund":false,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":["insufficient_payload"],"consensus_categories":[],"category_scores_codex":[0.0004278713,0.0001742722,0.0003143221,0.00001961337,0.0002592413,0.0001095076,0.000405865,0.0000568904,0.003003171],"category_scores_gemma":[0.0004145335,0.00008645433,0.00008937354,0.001049812,0.001282038,0.0001113018,0.0001398526,0.0002006842,0.0002695751],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000004448944,"about_ca_system_score_gemma":0.00004930541,"about_ca_topic_candidate":true,"about_ca_topic_consensus":true,"about_ca_topic_score_codex":0.02168305,"about_ca_topic_score_gemma":0.2740797,"domain_scores_codex":[0.9981896,0.0003032494,0.0002667224,0.0003906336,0.0005042747,0.0003455011],"domain_scores_gemma":[0.9991037,0.0001981463,0.0001543246,0.0002717089,0.0001518681,0.000120287],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0001262947,0.00003631544,0.9778125,0.000006057525,0.00006261484,0.00002642586,0.00003996668,0.000665893,0.00004967867,0.00001720918,0.0002806934,0.02087636],"study_design_scores_gemma":[0.0002528932,0.0004931533,0.9826987,0.0000211684,0.0001410665,0.00004736195,0.0001944113,0.00311126,0.00003354289,0.01160363,0.001259718,0.0001431092],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9923997,0.0003769469,0.000008215815,0.00473353,0.00007528787,0.0001979417,0.0003484713,0.00005735779,0.001802576],"genre_scores_gemma":[0.9982428,0.0001057015,0.0002149874,0.0006803584,0.00006696965,0.00000457675,0.0004159764,0.000002132307,0.0002665094],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.2523966,"threshold_uncertainty_score":0.9979082,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.02139775013136833,"score_gpt":0.2214163944994622,"score_spread":0.2000186443680939,"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."}}