Chinle Formation - Dockum Group

Unit Attributes

Lithology (n = 38)

Environment (n = 75)

Paleontology (1,529 occurrences)

Summary Statistics

37Rock Units
28Columns
773,007Total Area (km2)
26.00Mean Duration (Ma)
364Fossil Collections
329Fossil Taxa
J
Tr
P
Tithonian
Kimmeridgian
Oxfordian
Callovian
Bathonian
Bajocian
Aalenian
Toarcian
Pliensbachian
Sinemurian
Hettangian
Rhaetian
Norian
Carnian
Ladinian
Anisian
Early Triassic
Lopingian
Guadalupian
Leonardian
Wolfcampian

Hierarchy of Stratigraphic Nomenclature

Dockum Gp
(2 units)
Chinle Fm
(24 units)
Sloan Canyon Fm
(3 units)
Tecovas Fm
(8 units)
Trujillo Fm
(1 units)
Santa Rosa Sandstone Fm
(10 units)
Sheep Pen Sandstone Fm
(3 units)
Baldy Hill Fm
(1 units)
Travesser Fm
(1 units)
Shinarump Sandstone Mbr
(1 units)
Garta Grit Mbr
(2 units)
Petrified Forest Mbr
(4 units)
Shinarump Conglomerate Mbr
(6 units)