Ashdown Formation

Geology

Group: Wealden

Members: unnamed (21), Fairlight Clays (2), Lee Ness Sandstone (5), Lower (1)

Lithologies: not reported (6), "siliciclastic" (1), claystone (3), mudstone (4), siltstone (6), sandstone (12)

Paleoenvironments: terrestrial indet. (22), marginal marine indet. (3), estuary/bay (1), lagoonal (1), prodelta (1), lacustrine indet. (1)

Age range: base of the Late/Upper Berriasian to the top of the Early/Lower Valanginian or 145.00000 to 136.40000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Late/Upper Berriasian145.0 - 140.2United Kingdom (England) (80516 123449)
Late/Upper Berriasian - Early/Lower Valanginian145.0 - 136.4United Kingdom (England) (32329 32331 32347 32348 32349 32351 32352 32353 32354 32355 32717 73271 96619 119663 158767 220883)
Early/Lower Valanginian140.2 - 136.4United Kingdom (England) (52663 52664 82230 82231 82232 82490 83125 160833 160834 223901 223902)