Tunnel Mountain Formation

Geology

Group: Rocky Mountain

Members: unnamed (1), 1 (4), 2 (3), 3 (5)

Lithologies: siltstone (2), "limestone" (7), dolomite (6), chert (1)

Paleoenvironments: marine indet. (1), shallow subtidal indet. (11), deep subtidal indet. (1)

Age range: base of the Chesterian to the top of the Morrowan or 335.50000 to 318.60000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Chesterian335.5 - 323.2Canada (Alberta) (62372 62373 62374 62375 62376 62377 62378 62379 62380 62381 62382 62383 62384)
Morrowan323.2 - 318.6Canada (British Columbia) (61637)