Blue Lias Formation

Geology

Group: Lias

Members: unnamed (65), Bottom Floor Limestone (1), Bull Cliff (1), Rugby Limestone (1), Saltford Shale (1)

Lithologies: not reported (8), "siliciclastic" (1), claystone (1), mudstone (8), "shale" (16), sandstone (1), marl (23), lime mudstone (16), "limestone" (25)

Paleoenvironments: marine indet. (27), carbonate indet. (7), shallow subtidal indet. (1), deep subtidal shelf (4), offshore ramp (16), marginal marine indet. (3), offshore (11)

Age range: base of the Hettangian to the top of the Sinemurian or 201.30000 to 190.80000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Early/Lower Jurassic201.4 - 174.7United Kingdom (England) (139784)
Hettangian201.3 - 199.3United Kingdom (Wales) (176060)
Hettangian201.3 - 199.3United Kingdom (England) (105080 142744 149321 153782 153783)
Early/Lower Hettangian201.3 - 196.5United Kingdom (England) (29227 29228 29230 97844 110213 119083 119284 119285 163292 163299)
Late/Upper Hettangian201.3 - 196.5United Kingdom (Wales) (29234)
Late/Upper Hettangian201.3 - 196.5United Kingdom (England) (29233 37812 118315 163293 163294 163295 163297)
Liasicus201.3 - 196.5United Kingdom (England) (78503 78504)
Middle Hettangian201.3 - 196.5United Kingdom (England) (29231 29232)
Planorbis201.3 - 196.5United Kingdom (England) (78491 78492 78494 78495 78496 78497 78498 78499 78500 78501 78502 123982 115460 115518 195941 195946 196362 196364)
Hettangian - Sinemurian201.3 - 190.8United Kingdom (England) (41623 41624 41625 41626 176124)
Hettangian - Early/Lower Sinemurian201.3 - 189.6United Kingdom (England) (87878 92620 195942)
Early/Lower Hettangian - Middle Jurassic201.3 - 161.5United Kingdom (England) (29229)
Bucklandi196.5 - 189.6United Kingdom (England) (147352 195944)
Early/Lower Sinemurian196.5 - 189.6United Kingdom (England) (29235 29237 29239 29241 59028 136920 176439)
Early/Lower Sinemurian196.5 - 189.6United Kingdom (Wales) (29236 29238 29240 29242)