igsn analyte_determination proxy_published site_native_land sed_structure_sample sample_provided_by project_sample project_citation interpreted_age_provided_by geol_context_provided_by fossil_sample data_source_batch collector author analysis_instrument alternate_num affiliation interpreted_age analyte_determination_limits dic_proxy batch_sample project analysis sample collecting_event storage dic_exp_method dic_ana_method site geol_context batch dic_country lithostrat geol_age environment biostrat basin institution reference_work fossil dic_weathering dic_sed_structure dic_sample_type dic_publication dic_project_type dic_prep_method dic_native_land dic_meta dic_lithostrat dic_lithology dic_lith_texture dic_lith_composition dic_instrument dic_institution_type dic_ics_age dic_env_detail dic_color dic_biostrat dic_basin_type dic_analyte data_source craton_terrane spatial_ref_sys dic_continent person