Whitby Mudstone Formation

Geology

Group: Lias

Members: unnamed (5), Alum Shale (32), Dumbleton (9), Grey Shale (42), Jet Rock Beds (1), Mulgrave Shale (57)

Lithologies: not reported (2), mudstone (43), "shale" (92), sandstone (42), "limestone" (9)

Paleoenvironments: marine indet. (14), terrestrial indet. (1), shallow subtidal indet. (30), deep subtidal shelf (33), deep subtidal indet. (66), offshore (2)

Age range: base of the Toarcian to the top of the Late/Upper Toarcian or 182.70000 to 175.60000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Early/Lower Toarcian183.0 - 182.0United Kingdom (213658 213670 213671 213672 213673 213674 213675 213676 213677 213678 213679 213680 213681 213682 213683 213684 213685 213686 213687 213688 213689 213690 213691 213692 213693 213694 213695 213696 213697 213698 213699 213700 213701 213702 213703 213704 213705 213892 213894 213897 213899 213902 213911 213924 213925 213926 213927 213928 213929 213930 213931 213932 213933 213934 213935 213936 213937 213938 213939 213940 213941 213942 213943 213944 213945 213946 213947 213948 213949 213950 213951 213952 213953 213954 213955 213956 213957 213958 213959 213960 213961 213962 213963 213964 213965 213966 213967 213968 213969 213970 213971 213972 213973 213974 213975 213976 213977 213978 213979 213980 213981 213982 213983 213984 213985 213986 213987 213988 213989 213990 213991 213992 213993 213994 213995 213996 213997 213998 213999 214000 214001)
Early/Lower Toarcian183.0 - 182.0United Kingdom (Yorkshire) (219475)
Early/Lower Toarcian183.0 - 182.0United Kingdom (England) (90448 144583)
Falciferum183.0 - 182.0United Kingdom (England) (102189 115219 132073 154307 234541 234542 234543 234544 234545 234546)
Falciferum - Bifrons183.0 - 175.6United Kingdom (England) (118939)
Toarcian182.7 - 174.1United Kingdom (North Yorkshire) (220942)
Toarcian182.7 - 174.1United Kingdom (England) (52543)
Bifrons182.0 - 175.6United Kingdom (England) (90460)
Middle Toarcian182.0 - 175.6United Kingdom (214002 214003 214004 214005 214006 214007 214008 214009)
Late/Upper Toarcian180.1 - 175.6United Kingdom (Yorkshire) (219476)