tab delimited contribution id version timestamp contributor data_model_version reference description 14427 2 2006-12-19T09:49:28.000Z @magic 3.0 10.1029/GL007i007p00545 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 terranes 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 Gringo Gulch Volcanics Outcrop 1263 i DE-DI : LT-AF-Z : LT-T-Z:LP-DC2 This study Extrusive Andesite Colorado Plateau Gringo Gulch Volcanics 31.5 31.5 249.2 249.2 North America U.S.A. Arizona 61 65 Ma 0 167.5 -58.8 1.1 678.2 25 128 ND ND ND ND 77 201 1.2 1.7 100 AF to 100mT, thermal to 580C. AF cleaning 40-60mT. . ND >>>>>>>>>> tab delimited ages location age_low age_high age_unit timescale_eon timescale_era timescale_period timescale_epoch description method_codes timescale_citations citations Gringo Gulch Volcanics 61 65 Ma Phanerozoic Cenozoic Paleogene Paleocene K-Ar ages 56. 4-61. 5 Ma (younger plugs). Overlies 65 Ma diorite. GM-CC-STRAT:GM-KAR Gradstein et al. 2004 This study