{"id":"W3127051169","doi":"10.1016/j.lithos.2021.106040","title":"Effects of contamination on whole-rock isochrons in ancient rocks: A numerical modelling approach","year":2021,"lang":"en","type":"article","venue":"Lithos","topic":"Geological and Geochemical Analysis","field":"Earth and Planetary Sciences","cited_by":11,"is_retracted":false,"has_abstract":false,"ca_institutions":"University of Alberta","funders":"Canada First Research Excellence Fund","keywords":"Isochron dating; Isochron; Radiogenic nuclide; Geology; Metasomatism; Geochemistry; Radiometric dating; Mantle (geology); Igneous rock; Metamorphism; Crust; Mineralogy","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":[],"consensus_categories":[],"category_scores_codex":[0.00008345154,0.00007816181,0.0001879381,0.00004036479,0.00003037185,0.000009950923,0.00007608702,0.00005527593,0.0003485925],"category_scores_gemma":[0.00007382136,0.00005738179,0.00006974483,0.0003662643,0.00001562437,0.00003881272,0.00001043225,0.0001136653,0.0000571313],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000004201523,"about_ca_system_score_gemma":0.00001566656,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001501322,"about_ca_topic_score_gemma":0.0001681584,"domain_scores_codex":[0.9991743,0.00007934655,0.0001626732,0.00022759,0.0001811868,0.0001748804],"domain_scores_gemma":[0.9995986,0.0001779665,0.00004023055,0.0000848031,0.00003478752,0.00006359399],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"simulation_or_modeling","study_design_scores_codex":[0.00005108574,0.0004543867,0.519884,0.0001421126,0.00002563663,0.00004580822,0.0005040271,0.4700692,0.0004478498,0.0001809128,0.0000647268,0.008130293],"study_design_scores_gemma":[0.000261864,0.0001039151,0.2718038,0.00002717291,0.00001670081,0.000002424328,0.0001031226,0.7213324,0.004461219,0.001481461,0.0003087581,0.00009721122],"study_design_candidate":"simulation_or_modeling","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9557472,0.0005504098,0.03984501,0.0001553608,0.00002927345,0.0000761445,0.000008643166,0.00001081939,0.003577152],"genre_scores_gemma":[0.9982339,0.00001184871,0.001282565,0.000196922,0.0000237739,0.000002455357,0.00007965487,9.16752e-7,0.0001679561],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.2512632,"threshold_uncertainty_score":0.3816844,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01106037868990368,"score_gpt":0.1913503190562139,"score_spread":0.1802899403663102,"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."}}