Chaumont Formation
Geology
Group: Black River
Members: unnamed (4)
Lithologies: lime mudstone (2), wackestone (1), "limestone" (1), "carbonate" (1)
Paleoenvironments: marine indet. (1), carbonate indet. (1), shallow subtidal indet. (1), deep subtidal shelf (1)
Collections
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Middle Ordovician | USA (New York) | (23122) | |
Turinian | Canada (Quebec) | (174157) | |
Turinian | USA (New York) | (89098 172566 172567) | |
Turinian | Canada (Ontario) | (185460 185429 185431 185449 185451 185462 185465 185474 185475 185476) | |
Blackriveran | Canada (Quebec) | (63816) | |
Blackriveran | Canada (Ontario) | (55999) | |
Blackriveran | USA (New York) | (325) |