tab delimited contribution id version timestamp contributor data_model_version reference description 13382 2 2006-12-29T09:20:46.000Z @magic 3.0 10.1029/JZ054i002p00131 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 Rosehill Formation Outcrop 3760 i DE-DI : LT-NO:LP-DC0 This study Sedimentary sediments Rosehill Formation 40 40 282 282 North America U.S.A. Maryland : West Virginia 425 428 Ma 100 325 -39 13 33 5 50 F+ ND ND ND 20 136 10 15 0 Early Middle Silurian. Extent 40 km. Superseded study. Old Result. Superseded study. Clear fold test demonstrated in diagram. ND >>>>>>>>>> tab delimited ages location age_low age_high age_unit timescale_eon timescale_era timescale_period timescale_epoch method_codes timescale_citations citations Rosehill Formation 425 428 Ma Phanerozoic Paleozoic Silurian Wenlock GM-CC-STRAT Gradstein et al. 2004 This study