{"id":"W4389119016","doi":"10.1016/j.chemgeo.2023.121862","title":"U–Pb dating of belemnites and rugose corals: The potential for absolute dating of calcitic invertebrate fossils","year":2023,"lang":"en","type":"article","venue":"Chemical Geology","topic":"Geological and Geochemical Analysis","field":"Earth and Planetary Sciences","cited_by":3,"is_retracted":false,"has_abstract":false,"ca_institutions":"Research Manitoba; University of Toronto","funders":"Natural Sciences and Engineering Research Council of Canada","keywords":"Geology; Paleontology; Calcite; Diagenesis; Isochron; Recrystallization (geology); Devonian; Aragonite; Radiometric dating; Geochemistry","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":[0.002378496,0.0002719222,0.0005309069,0.002834454,0.0009241619,0.001596013,0.001151901,0.0004292956,0.001596435],"category_scores_gemma":[0.003214536,0.0003122849,0.0001706878,0.001909715,0.0008705192,0.001338308,0.0009633505,0.0004476639,0.0002479434],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.001290502,"about_ca_system_score_gemma":0.0009035217,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.05178298,"about_ca_topic_score_gemma":0.1645222,"domain_scores_codex":[0.9994224,0.0001666221,0.0000356037,0.0001370626,0.0001540058,0.00008422659],"domain_scores_gemma":[0.9990683,0.0002351547,0.0001452704,0.0001134412,0.0003773991,0.00006034084],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.001352758,0.0001054814,0.7547622,0.0003278599,0.0003170523,0.0002535847,0.0009600107,0.005386546,0.07752381,0.01027102,0.001393453,0.1473462],"study_design_scores_gemma":[0.00006910833,0.0003930195,0.9211112,0.0001683979,0.0002632338,0.0005492748,0.0007221951,0.01747455,0.03218332,0.003096029,0.02391843,0.00005123725],"study_design_candidate":"bench_or_experimental","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9749699,0.00335361,0.01126078,0.0002030392,0.00005750364,0.00001063844,0.0004194273,0.00006985132,0.009655148],"genre_scores_gemma":[0.9918882,0.0004901558,0.005570593,0.00003998718,0.00001105535,0.000006579163,0.0002450156,0.00002741266,0.001720974],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.05178298,"threshold_uncertainty_score":0.1029631,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.02196350802463614,"score_gpt":0.2323255917107549,"score_spread":0.2103620836861188,"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."}}