Yorktown Formation

Geology

Group: Chesapeake

Members: unnamed (93), basal (1), Moore House (11), Morgarts Beach (4), Rushmere (7), Sunken Meadow (5), Zone 1 (1)

Lithologies: not reported (47), "siliciclastic" (13), siltstone (1), sandstone (49), marl (3), "limestone" (1)

Paleoenvironments: marine indet. (46), terrestrial indet. (1), peritidal (1), shallow subtidal indet. (8), marginal marine indet. (1), coastal indet. (63), estuary/bay (1), offshore (1)

Age range: base of the Late/Upper Miocene to the top of the Late/Upper Pliocene or 11.63000 to 2.58000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Late/Upper Miocene11.63 - 5.333USA (North Carolina) (150636 150639 150641 150642 150643 150644)
Late/Upper Miocene11.63 - 5.333USA (Maryland) (191407)
Late/Upper Miocene11.63 - 5.333USA (Virginia) (150416 150427 150595 150596 150597 150631)
Late/Upper Miocene - Early/Lower Pliocene11.63 - 3.6USA (Virginia) (143591 144067 144069 144070 144071 144126)
Late/Upper Miocene - Early/Lower Pliocene11.63 - 3.6USA (North Carolina) (143593)
Early/Lower Pliocene5.333 - 3.6USA (Virginia) (57908 59297 160350)
Early/Lower Pliocene5.333 - 3.6USA (North Carolina) (59300 160351)
Zanclean5.333 - 3.6USA (Virginia) (57906 57907 58986 71620 71624 77577 77578 77579 155878 155881 155883 155884 155886 155887 155888 155889 155890 155891 155892)
Zanclean5.333 - 3.6USA (North Carolina) (49982 51591 52582 77580 77581 77582 77583 77584 77585 77586)
Early/Lower Pliocene - Late/Upper Pliocene5.333 - 2.58USA (North Carolina) (59328 59329 59330)
Pliocene5.333 - 2.58USA (North Carolina) (49983 61920 61921 61922 61923 62357 79248 79249 123228 123861 144072 151326)
Pliocene5.333 - 2.58USA (Virginia) (59293 61925 62356 85158 96535 96691 143589 143590 143592)
Pliocene5.333 - 2.58North Atlantic (219757 219778 278446 278448)
Zanclean - Piacenzian5.333 - 2.58USA (Virginia) (59155 61926 61927 61928 61929)
Late/Upper Pliocene3.6 - 2.58USA (North Carolina) (59301 59331 160347 160349 160453)
Late/Upper Pliocene3.6 - 2.58USA (Virginia) (59298 60660 60667 61293 61294 61295 61296 69042 71621 78260 78261 78262 78264 78265 78266 78267 78268 78269 78270 78271 78272 78273 79245 79246 79247 79709 80036 80038 80040 160344)
Piacenzian3.6 - 2.58USA (North Carolina) (18550)