{"id":"W3016540808","doi":"10.1038/s41586-020-2173-4","title":"Hydrothermal 15N15N abundances constrain the origins of mantle nitrogen","year":2020,"lang":"en","type":"article","venue":"Nature","topic":"Geological and Geochemical Analysis","field":"Earth and Planetary Sciences","cited_by":87,"is_retracted":false,"has_abstract":false,"ca_institutions":"Canada Research Chairs; University of Toronto","funders":"Natural Environment Research Council; Sight Research UK","keywords":"Mantle (geology); Geology; Mantle plume; Plume; Primitive mantle; Hotspot (geology); Basalt; Nitrogen; Volatiles; Geochemistry; Geophysics; Earth science; Lithosphere; Chemistry; Physics; Paleontology; Partial melting; Thermodynamics","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":[0.0003885701,0.0002564369,0.0002055789,0.0005064213,0.0003703767,0.0008165622,0.0002893614,0.0003553075,0.001537515],"category_scores_gemma":[0.0007589423,0.0003196604,0.0001981921,0.000509617,0.0005864003,0.000466546,0.0004941038,0.0002186142,0.0002622443],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0008869999,"about_ca_system_score_gemma":0.0005254649,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.01855984,"about_ca_topic_score_gemma":0.04488095,"domain_scores_codex":[0.9998868,0.00001103462,0.000007123423,0.0000504166,0.00002272855,0.00002183136],"domain_scores_gemma":[0.9997352,0.00007830346,0.00005630469,0.00004544334,0.00005792283,0.00002694551],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0006327522,0.00002474056,0.5408462,0.00008914324,0.0001936061,0.0001120893,0.000478414,0.002534202,0.4303163,0.003333625,0.0002433725,0.02119561],"study_design_scores_gemma":[0.00002427746,0.00004676868,0.9252945,0.00001868056,0.00008280983,0.0001409418,0.0003218276,0.006547596,0.05924184,0.00310496,0.005157374,0.00001844279],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9941492,0.0004097763,0.001792777,0.00006038439,0.000008213157,0.000002991484,0.0004684134,0.0000353178,0.00307301],"genre_scores_gemma":[0.9984675,0.000139516,0.0007051407,0.00002409038,0.000003792569,0.00000156995,0.00030237,0.00001592953,0.0003399781],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.01855984,"threshold_uncertainty_score":0.03690362,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.008682727416256765,"score_gpt":0.197063615628832,"score_spread":0.1883808882125752,"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."}}