Chesapeake Group
Geology
Formations: unnamed (5), Calvert (140), Choptank (54), Eastover (24), Old Church (5), Saint Marys (7), St Mary's (8), St Marys (26), St. Mary's (1), St. Marys (3), Yorktown (28)
Lithologies: not reported (57), "siliciclastic" (6), claystone (94), mudstone (2), siltstone (7), sandstone (122), conglomerate (1), marl (9)
Paleoenvironments: marine indet. (92), terrestrial indet. (4), peritidal (1), shallow subtidal indet. (8), offshore shelf (6), marginal marine indet. (6), coastal indet. (91), estuary/bay (43), lagoonal (1), foreshore (17), shoreface (8), transition zone/lower shoreface (1), offshore (23)
Collections