{"id":"W2066401251","doi":"10.1038/nature05359","title":"How well can Pb isotopes date core formation?","year":2006,"lang":"en","type":"letter","venue":"Nature","topic":"Geological and Geochemical Analysis","field":"Earth and Planetary Sciences","cited_by":12,"is_retracted":false,"has_abstract":false,"ca_institutions":"Laurentian University","funders":"","keywords":"Geology; Crust; Isotope; Astrobiology; Mantle (geology); Accretion (finance); Planet; Core (optical fiber); Tungsten; Geochemistry; Earth science; Astrophysics; Chemistry; Materials science; Physics; Nuclear physics","routes":{"ca_aff":true,"ca_fund":false,"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":[0.003786254,0.0003512256,0.0008290499,0.0004786615,0.00171687,0.002167393,0.0008702211,0.01513272,0.00332137],"category_scores_gemma":[0.0174928,0.0003768216,0.0005123568,0.0004880476,0.002872725,0.003021525,0.000957289,0.01762619,0.004062006],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.002161678,"about_ca_system_score_gemma":0.001511809,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.005034907,"about_ca_topic_score_gemma":0.01069194,"domain_scores_codex":[0.999106,0.0001755259,0.0001014014,0.0001991254,0.0002707519,0.0001472694],"domain_scores_gemma":[0.9934336,0.003272542,0.0004409349,0.0003395448,0.001796863,0.0007165521],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"not_applicable","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.0002833375,0.00004110314,0.004570551,0.0001011905,0.00006710533,0.00131459,0.0001860568,0.0001577277,0.0009016081,0.01194526,0.9107137,0.06971773],"study_design_scores_gemma":[0.00008629781,0.00005875298,0.005246006,0.0001507779,0.00008365435,0.001903213,0.0005814616,0.0007002327,0.001946423,0.08374946,0.9054291,0.00006460991],"study_design_candidate":"bench_or_experimental","study_design_consensus":null,"genre_codex":"commentary","genre_gemma":"empirical","genre_scores_codex":[0.001509385,0.002840211,0.0009044581,0.9652975,0.02492874,0.000006524614,0.00008117866,0.00004196291,0.004389934],"genre_scores_gemma":[0.02970663,0.004626093,0.001593406,0.8897559,0.05464319,0.00003139043,0.00008823821,0.00006969681,0.01948539],"genre_candidate":"empirical","genre_consensus":null,"teacher_disagreement_score":0.01513272,"threshold_uncertainty_score":0.02002382,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.008709149647209194,"score_gpt":0.1840178055595137,"score_spread":0.1753086559123045,"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."}}