{"id":"W3175585199","doi":"10.3390/min11070667","title":"Lead Isotope Analysis of Geological Native Copper: Implications for Archaeological Provenance Research in the North American Arctic and Subarctic","year":2021,"lang":"en","type":"article","venue":"Minerals","topic":"Archaeology and ancient environmental studies","field":"Earth and Planetary Sciences","cited_by":3,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"University of Alberta; National Science Foundation","keywords":"Subarctic climate; Arctic; Provenance; Copper; Circumpolar star; Indigenous; Geology; Isotope analysis; Lead (geology); Isotope; Archaeology; Oceanography; Geography; Earth science; Geochemistry; Ecology; Chemistry; Paleontology; Biology","routes":{"ca_aff":false,"ca_fund":true,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0004958719,0.0000698346,0.0002330483,0.00008470655,0.0001958774,0.000004498435,0.000148975,0.00002249567,0.00005391387],"category_scores_gemma":[0.0002193059,0.00004173394,0.00005377335,0.0009765298,0.001863297,0.00003447748,0.00005676585,0.0001404008,0.000002780705],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000004834535,"about_ca_system_score_gemma":0.00001361142,"about_ca_topic_candidate":true,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0007925057,"about_ca_topic_score_gemma":0.02028129,"domain_scores_codex":[0.9989008,0.0002890984,0.0001624945,0.0002643057,0.0001213127,0.0002619722],"domain_scores_gemma":[0.9984758,0.001271177,0.00004955859,0.0001298875,0.00004350096,0.00003000575],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.00002388351,0.00004085244,0.9949705,0.000008076251,0.0000528761,0.000004919165,0.000711163,0.0003626596,0.00007020881,0.0009331682,0.00003874732,0.002782922],"study_design_scores_gemma":[0.00009624479,0.0002198445,0.9946396,0.000002883034,0.00003714233,0.000005168947,0.0006854604,0.0006024527,0.0000212938,0.003253977,0.0003838224,0.00005209282],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9909441,0.0008236059,0.00005323108,0.007420292,0.000007734804,0.0002314022,0.00008861805,0.000003051687,0.0004279291],"genre_scores_gemma":[0.9981146,0.0005076376,0.0006956236,0.000393551,0.00001360627,0.0000345913,0.00009478757,8.728688e-7,0.0001447244],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.01948879,"threshold_uncertainty_score":0.997596,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.07138474906785902,"score_gpt":0.3174778543110723,"score_spread":0.2460931052432133,"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."}}