Wasatch Formation

Geology

Members: unnamed (121), Alkali Creek Tongue (12), basal Lookout Mountain Conglomerate (1), Cathedral Bluffs Tongue (11), Chappo (17), LaBarge (1), Luman Tongue (1), Main Body (30), Niland Tongue (8), Ramsey Ranch (44), Red Desert (1)

Lithologies: not reported (44), "siliciclastic" (4), claystone (8), mudstone (26), "shale" (31), siltstone (25), sandstone (14), "carbonate" (1), coal (7), lignite (1)

Paleoenvironments: marine indet. (7), terrestrial indet. (145), fluvial indet. (33), channel lag (1), "channel" (1), wet floodplain (54), fluvial-lacustrine indet. (3), lacustrine - large (2), lacustrine indet. (1)

Age range: base of the Tiffanian to the top of the Early/Lower Eocene or 60.90000 to 48.07000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Tiffanian60.9 - 56.2USA (Wyoming) (14936 14940)
Clarkforkian56.2 - 54.9USA (Wyoming) (15075 15076 15077 15078 15090 164513 164514 164515 164516 164517 164518 164519)
Early/Lower Eocene56.0 - 48.07USA (Wyoming) (28696 28698 28699 57980 99475 139531)
Early/Lower Eocene56.0 - 48.07USA (New Mexico) (53161)
Early/Lower Eocene56.0 - 48.07USA (Colorado) (53070)
Early/Lower Eocene56.0 - 48.07USA (Wyoming ) (129152)
Ypresian56.0 - 48.07USA (Colorado) (105004)
Eocene56.0 - 33.9USA (Wyoming) (236611 236612 236613 236614 236615 236616 236617 236618 236619 236620 236621 236622 236623 236730 236731 236777)
Graybullian54.9 - 50.5USA (Wyoming) (15875 15876 15877 15878)
Lostcabinian54.9 - 50.5USA (Wyoming) (124856 124857 124858 168282)
Lysitean - Lostcabinian54.9 - 50.5USA (Wyoming) (15451)
Wasatchian54.9 - 50.5USA (Utah) (15659)
Wasatchian54.9 - 50.5USA (Wyoming) (15454 15455 15456 15457 15462 15479 15486 15596 15597 15643 15644 15656 15657 15658 15661 15662 15665 15666 15667 15670 15673 15710 15711 15714 15717 15720 15721 15722 15723 15724 15839 15841 15842 15843 15846 15848 15849 15850 15851 15852 15889 15890 15891 15892 15893 15894 15912 15931 15932 15994 16015 16016 16017 16018 16019 16020 16021 16022 16023 16024 16025 16026 16027 16028 16029 16030 16031 16032 16033 16055 16070 16071 16072 27268 28135 28695 28697 28700 28701 28702 28703 28704 28705 28706 28707 28708 28709 28710 28711 28712 28713 28714 28715 28716 28717 28718 28719 28720 28721 28722 28723 28724 28725 28726 28727 28728 28729 28730 28731 28732 28733 28734 28735 28736 28737 28738 28739 28740 28741 28742 28743 28908 28909 28910 28911 168328 88037 118482 156617 156618 168283 168321 168322 168323 168324 168325 168326 168327 168329 168331 181313 181619 186931 186932 186933 186934 186935 186936 186937 186938 186939 186940 186941 186942 186943 186944 186945 186946 186947 186948 186949 186950 186951 186952 186953 191219 191221 192129 192130 226068 226069 226071 232912)
Wasatchian54.9 - 50.5USA (Colorado) (15450 15480 15485 15660 15725 15836 15844 15845 15854 15855 15856 15857 15858 15859 15860 15861 15862 15863 15864 15865 15866 15867 15868 15869 15870 15871 15872 15873 15874 15885 15887)
Wasatchian - Bridgerian54.9 - 46.2USA (Wyoming) (15463 15669 15713 16134 74332)
Bridgerian50.5 - 46.2USA (Colorado) (16199)
Bridgerian50.5 - 46.2USA (Wyoming) (15668 15837 16198 16220 16227 16258 16259 16260 16261 16262 16263 16389 70264)