{"id":"W2087718270","doi":"10.1016/j.chemgeo.2014.07.007","title":"A new approach to Pb evaporation and condensation from zircon enabling sub-Ma age determination on Precambrian rocks","year":2014,"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":"University of Toronto","funders":"Natural Sciences and Engineering Research Council of Canada; University of Toronto","keywords":"Precambrian; Zircon; Metamictization; Geology; Thermal ionization mass spectrometry; Geochemistry; Fractionation; Felsic; Igneous rock; Isotope dilution; Mineralogy; Mass spectrometry; Ionization; Chemistry; Mafic; Ion; Chromatography","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":"codex-gemma-dda1882f352a","candidate_categories":["insufficient_payload"],"consensus_categories":[],"category_scores_codex":[0.0001578157,0.0001411276,0.0002331274,0.00006457079,0.00006176509,0.00003686484,0.0001284846,0.0001938357,0.0009895194],"category_scores_gemma":[0.0003905646,0.0001125872,0.0000454416,0.0001614426,0.00006104428,0.00007125435,0.00002471696,0.0001498589,0.0002686539],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000004987536,"about_ca_system_score_gemma":0.000009904765,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001989915,"about_ca_topic_score_gemma":0.0007506528,"domain_scores_codex":[0.9988546,0.00007733291,0.0002145637,0.0004684077,0.0001468744,0.0002381884],"domain_scores_gemma":[0.9992226,0.0002936857,0.00006976347,0.0001451199,0.00003719296,0.0002315806],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.0003642164,0.00009738697,0.09168613,0.00003086709,0.0000493567,0.000008160619,0.0005028149,0.002360667,0.5486547,0.0008125392,0.0006590009,0.3547742],"study_design_scores_gemma":[0.001688679,0.0005523826,0.2105442,0.0000309105,0.0001509308,0.00002399735,0.0001051858,0.1347156,0.4739718,0.1730949,0.004178523,0.0009429153],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9712654,0.00003714053,0.01890281,0.0006342097,0.00005797578,0.0001209795,0.000005928365,0.00004016267,0.008935438],"genre_scores_gemma":[0.993242,0.000004741015,0.004827188,0.0008595347,0.0002262932,0.000002967301,0.0006325334,0.000002235847,0.0002025203],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.3538313,"threshold_uncertainty_score":0.9999237,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01608414288997198,"score_gpt":0.2004686638436907,"score_spread":0.1843845209537187,"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."}}