tab delimited contribution id version timestamp contributor data_model_version reference description 15641 2 2006-12-29T09:21:06.000Z @magic 3.0 10.1029/JZ058i002p00243 Upgraded to MagIC Data Model 3.0 by the MagIC Database Team >>>>>>>>>> tab delimited locations location location_type result_name result_type method_codes citations geologic_classes lithologies geological_province_sections lat_s lat_n lon_w lon_e continent_ocean country region age_low age_high age_unit dir_tilt_correction dir_dec dir_inc dir_alpha95 dir_k dir_n_sites dir_n_samples fold_test conglomerate_test contact_test reversal_test pole_lat pole_lon pole_dp pole_dm pole_reversed_perc description rock_magnetic_test Baraga County Dykes Outcrop 3767 i DE-DI : LT-NO:LP-DC0 This study Intrusive Intrusives Baraga County Dykes 46.5 46.5 271.5 271.5 North America U.S.A. Michigan 1100 1200 Ma 0 82 -86 1 82 2 36 ND ND ND ND 45 261 2 2 100 Intrudes Archean, overlain by Jacobsville Formation. Superseded study. Old Result. Superseded study. ND >>>>>>>>>> tab delimited ages location age_low age_high age_unit timescale_eon timescale_era timescale_period method_codes timescale_citations citations Baraga County Dykes 1100 1200 Ma Proterozoic Mesoproterozoic Stenian GM-CC-STRAT Gradstein et al. 2004 This study