Chatham Group

Geology

Formations: Blomidon (3), Bull Run (5), Gettysburg (5), Hammer Creek (1), Lockatong (12), Manassas Sandstone (5), New Haven (6), New Oxford (2), Passaic (32), Pekin (8), Stockton (6), Wolfville (10), Wolfville/Blomidon (1)

Lithologies: not reported (29), "siliciclastic" (2), claystone (6), mudstone (5), "shale" (14), siltstone (18), sandstone (36), conglomerate (3), marl (1), "limestone" (2)

Paleoenvironments: marine indet. (1), terrestrial indet. (61), carbonate indet. (2), fluvial indet. (12), "channel" (2), "floodplain" (2), lacustrine - large (4), lacustrine - small (2), pond (1), lacustrine indet. (11)

Age range: base of the Ashbyan to the top of the Rhaetian or 460.90000 to 201.30000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Ashbyan460.9 - 449.5USA (Virginia) (164447 197377)
Carnian237.0 - 228.0Canada (Nova Scotia) (55416 80074 80079 80093 89078 89080 89088 107284 107285 107286)
Carnian237.0 - 228.0USA (North Carolina) (46567 55526 74205 93563 93614 107418 107424 169982)
Carnian - Norian237.0 - 208.5Canada (Nova Scotia) (187199)
Late/Upper Triassic237.0 - 201.3USA (Pennsylvania) (52494 189579)
Norian228.0 - 208.5USA (Connecticut) (62843 79375 91752 173354)
Norian228.0 - 208.5Canada (Nova Scotia) (89142 107287 138975)
Norian228.0 - 208.5USA (Virginia) (103815 103818 105101 105551 152885 152886 154230 154231)
Norian228.0 - 208.5USA (New Jersey) (12856 46621 46622 55410 55411 55412 55418 55492 62836 62841 89131 91743 92082 92106 92108 187287 187289 187290 187317 187318 187319 190915)
Norian228.0 - 208.5USA (New York) (57917)
Norian228.0 - 208.5USA (Pennsylvania) (84111 54144 55413 55414 55415 55419 59371 68706 84112 84113 84114 84115 84116 84117 93037 99375 105836 106284 107421 107422 107423 163460)
Norian228.0 - 208.5USA (Maryland) (35079)
Norian - Rhaetian228.0 - 201.3USA (New Jersey) (80143 89137 92107 187321)
Norian - Rhaetian228.0 - 201.3USA (Pennsylvania) (68705)
Lacian - Alaunian221.5 - 212.0USA (Virginia) (68889 68890)
Alaunian215.56 - 212.0USA (Connecticut) (91750)
Rhaetian208.5 - 201.3USA (Pennsylvania) (62766 62767 62768 132244)
Rhaetian208.5 - 201.3USA (New Jersey) (194093)
Rhaetian208.5 - 201.3USA (Connecticut) (89140)