Oxford Clay Formation

Geology

Group: Ancholme

Members: unnamed (21), Calcareous Grit (1), Lower (12), Middle (2), Nothe Grit (1), Peterborough (38), Stewartby (8), Weymouth (10)

Lithologies: not reported (24), claystone (34), mudstone (16), "shale" (12), siltstone (1), sandstone (4), marl (2), "limestone" (3)

Paleoenvironments: marine indet. (44), carbonate indet. (2), shallow subtidal indet. (3), open shallow subtidal (2), deep subtidal shelf (2), offshore indet. (20), marginal marine indet. (8), foreshore (1), offshore (11)

Age range: base of the Early/Lower Callovian to the top of the Oxfordian or 164.70000 to 157.30000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Callovian166.1 - 163.5United Kingdom (England) (37950 37951 37952 37956 37957 37958 38487 52636 98448 100518 100519 119563 119669 119670 130656 132063 133586 133587 140699 141861 141874 148892 149242 149243 182912 186252 199916)
Callovian166.1 - 163.5United Kingdom (Wiltshire) (190125)
Callovian - Oxfordian166.1 - 157.3United Kingdom (England) (98447 140700 140706 140707 141826)
Early/Lower Callovian164.7 - 161.2United Kingdom (England) (36578 37949 37953 37954 37955 118199)
Late/Upper Callovian164.7 - 161.2United Kingdom (Buckinghamshire) (196232 196234)
Late/Upper Callovian164.7 - 161.2United Kingdom (59044)
Late/Upper Callovian164.7 - 161.2United Kingdom (England) (38488 38489 38490 52552 77060 77129 92052 119503 212961)
Late/Upper Callovian164.7 - 161.2United Kingdom (Oxfordshire) (93214 196233)
Late/Upper Callovian164.7 - 161.2France (Nord-Pas-de-Calais) (119668)
Middle Callovian164.7 - 161.2United Kingdom (England) (47362 47625 52635 53680 53833 59127 59128 92050 92051 92053 105081 109800 133067 133068 142299 149244 149245 149246 149253 149254 162945)
Middle Callovian164.7 - 161.2United Kingdom (Cambridgeshire) (191845)
Late/Upper Callovian - Early/Lower Oxfordian164.7 - 155.7United Kingdom (England) (77130)
Middle Callovian - Early/Lower Oxfordian164.7 - 155.7United Kingdom (Oxfordshire) (196235 196236)
Oxfordian163.5 - 157.3United Kingdom (62268)
Oxfordian163.5 - 157.3United Kingdom (Dorset) (224072)
Oxfordian163.5 - 157.3United Kingdom (England) (92048 100669)
Early/Lower Oxfordian161.2 - 155.7United Kingdom (Cambridgeshire) (93211 93213)
Early/Lower Oxfordian161.2 - 155.7United Kingdom (England) (52556 93210 93825 191840 191841 191842 191843 191844)