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Devonian Lithological Database
The following codes were used in the assembly to designate the types of rock found in an unit. More than one rock type can be assigned to a given unit. This system is being phased out of future versions of the database.
| Code |
Lithology
|
|---|---|
|
A
|
Phosphorites
|
|
C
|
Conglomerates
|
|
D
|
Dolomite
|
|
G
|
Gypsum, Anhydrite
|
|
H
|
Halite
|
|
L
|
Limestones (not soil carbonate)
|
|
M
|
Shale, Mudstone
|
|
P
|
Coal, Peat, Marine Coals
|
|
Q
|
Bedded Chert
|
|
R
|
Reefs, Reef-Related
|
|
S
|
Sandstone
|
|
T
|
Tillite, Glacier-Related
|
|
W
|
Manganese
|
|
X
|
Iron ores
|
|
Y
|
Chamosite
|
|
Z
|
Glauconite
|
|
N
|
Paleosols
|
|
1
|
Organic Rich
|
|
2
|
Laterite, Laterite-Related
|
|
3
|
Eolian Sands
|
|
4
|
Red Beds
|
|
5
|
Black Shales (with code M)
|
|
6
|
Carbonate Ooids
|
|
7
|
Iron Ooids
|
|
8
|
Other Ooids
|
|
9
|
Pellets, Peloids
|
|
V
|
Volcanics
|