{"id":"W2087349531","doi":"10.1029/1999wr900278","title":"Chloride and chlorine isotopes (<sup>36</sup>Cl and δ<sup>37</sup>Cl) as tracers of solute migration in a thick, clay‐rich aquitard system","year":2000,"lang":"en","type":"article","venue":"Water Resources Research","topic":"Groundwater and Isotope Geochemistry","field":"Earth and Planetary Sciences","cited_by":120,"is_retracted":false,"has_abstract":true,"ca_institutions":"Atomic Energy (Canada); University of Saskatchewan","funders":"Natural Sciences and Engineering Research Council of Canada","keywords":"Geology; Aquifer; Cretaceous; TRACER; Geochemistry; Isotope; Fractionation; Groundwater; Radiogenic nuclide; Mineralogy; Paleontology; Chemistry","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":[0.001959003,0.0003206364,0.0004858451,0.000331617,0.0003843101,0.0003490885,0.0004745281,0.000245644,0.001462242],"category_scores_gemma":[0.00004658711,0.0002293055,0.00007136364,0.0004608085,0.0004568118,0.0004588414,0.0001092401,0.0006629488,0.0002474542],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00003164749,"about_ca_system_score_gemma":0.00004803126,"about_ca_topic_candidate":true,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.01703645,"about_ca_topic_score_gemma":0.001800918,"domain_scores_codex":[0.9961911,0.0003663907,0.0005926671,0.0007497076,0.001003495,0.001096586],"domain_scores_gemma":[0.9988774,0.0001988716,0.00004905755,0.0004371138,0.0001108356,0.0003266912],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.005776145,0.0002504151,0.7799144,0.003248909,0.0002780393,0.0005266824,0.1179777,0.02303289,0.01271825,0.00003101757,0.001369268,0.05487622],"study_design_scores_gemma":[0.008573528,0.003725501,0.2618302,0.001676153,0.000153984,0.001194597,0.05243501,0.2501948,0.1803067,0.001240486,0.2358418,0.002827276],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9874085,0.001212316,0.000001547776,0.0007098594,0.0000215413,0.0005545695,0.00005797564,0.00004869276,0.009985048],"genre_scores_gemma":[0.9929311,0.0006414175,0.00006211094,0.00004490452,0.0002085224,0.0000226906,0.0001481673,0.00001699466,0.005924128],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.5180842,"threshold_uncertainty_score":0.9994506,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.02164657725358573,"score_gpt":0.2485057211524863,"score_spread":0.2268591438989006,"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."}}