tab delimited contribution id version timestamp contributor data_model_version reference description 12059 2 2006-12-19T07:49:31.000Z @magic 3.0 10.1016/0012-821X(79)90008-6 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 Martinsburg Formation Outcrop 626 i DE-DI : LT-AF-Z : LT-T-Z:LP-DC3 This study Intrusive:Sedimentary sediments:Intrusives Martinsburg Formation 40.5 40.5 284.3 284.3 North America U.S.A. Pennsylvania 472 488 Ma 100 318.3 -1 13.6 4.7 4 30 ND ND ND Ro 35.8 159.8 6.8 13.6 200 Strikes 186-237/Dips 133-158. Plunging fold. . AF cleaning 10-70mT, thermal 400-700C. . ND >>>>>>>>>> tab delimited ages location age_low age_high age_unit timescale_eon timescale_era timescale_period timescale_epoch method_codes timescale_citations citations Martinsburg Formation 472 488 Ma Phanerozoic Paleozoic Ordovician Early Ordovician GM-CC-STRAT Gradstein et al. 2004 This study