{"id":"W2126582119","doi":"10.1016/j.quaint.2014.11.045","title":"When did the Anthropocene begin? A mid-twentieth century boundary level is stratigraphically optimal","year":2015,"lang":"en","type":"article","venue":"Quaternary International","topic":"Radioactivity and Radon Measurements","field":"Health Professions","cited_by":761,"is_retracted":false,"has_abstract":false,"ca_institutions":"University of Alberta","funders":"British Geological Survey; Natural Environment Research Council; Sight Research UK","keywords":"Anthropocene; Global Boundary Stratotype Section and Point; Stratotype; Boundary (topology); Epoch (astronomy); Geology; Paleontology; Geologic time scale; Range (aeronautics); Chronostratigraphy; Stage (stratigraphy); Computer science; Structural basin","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.1645785383653518,"score_gpt":0.4094783186535439,"score_spread":0.2448997802881921,"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."}}