{"id":"W2106142284","doi":"10.2113/gsecongeo.103.3.465","title":"PRECISE AGE OF THE PLATINIFEROUS MERENSKY REEF, BUSHVELD COMPLEX, SOUTH AFRICA, BY THE U-Pb ZIRCON CHEMICAL ABRASION ID-TIMS TECHNIQUE","year":2008,"lang":"en","type":"article","venue":"Economic Geology","topic":"Geological and Geochemical Analysis","field":"Earth and Planetary Sciences","cited_by":292,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of British Columbia","funders":"Natural Sciences and Engineering Research Council of Canada","keywords":"Zircon; Geology; Geochemistry; Chromitite; Chromite; Layered intrusion; Biotite; Reef; Platinum group; Baddeleyite; Mafic; Paleontology; Platinum; Oceanography","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":[0.0001341533,0.0002703003,0.000176553,0.001777997,0.0006778251,0.0005846092,0.0003179065,0.0001854206,0.001208831],"category_scores_gemma":[0.0004644624,0.0003184045,0.0001208286,0.0008577846,0.0004678052,0.0003709343,0.0005959314,0.0001821225,0.0003793303],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0009348031,"about_ca_system_score_gemma":0.0007278041,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.04886136,"about_ca_topic_score_gemma":0.1407482,"domain_scores_codex":[0.999882,0.00000589049,0.00001082419,0.00004378975,0.00003546645,0.00002195096],"domain_scores_gemma":[0.9998786,0.00001230953,0.00005138502,0.00001265817,0.00003320813,0.00001171326],"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":[0.0002234792,0.00002216285,0.4103064,0.0003258419,0.00004838116,0.001479016,0.005870163,0.0006354767,0.5347942,0.0006547034,0.0003080361,0.04533219],"study_design_scores_gemma":[0.00001105977,0.00007380577,0.9532751,0.00006187203,0.00002137223,0.0009412856,0.001224105,0.0004616467,0.0335432,0.00006271555,0.01030845,0.00001543732],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9959376,0.0003790363,0.0004376445,0.00002067555,0.000003244076,0.00002346183,0.0003942026,0.00001308519,0.002790972],"genre_scores_gemma":[0.9956741,0.0004896608,0.001650593,0.00001082667,0.000002266084,0.00002041084,0.0003407912,0.00001477318,0.001796517],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.04886136,"threshold_uncertainty_score":0.0971539,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.02446420642411753,"score_gpt":0.1862993729523018,"score_spread":0.1618351665281843,"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."}}