Table
T1. Lithologic description of granular sediments.
Sediment
class
Major
modifiers
Principal
names
Minor
modifiers
Pelagic
sediment
1.
Composition of pelagic grains present in major amounts
1.
Ooze1.
Composition of pelagic and neritic grains present in
minor amounts
2.
Chalk
2.
Texture of clastic grains present in major amounts
3.
Pelagic limestone
2.
Texture of clastic grains present in minor amounts
4.
Radiolarite
5.
Diatomite
6.
Spicule
7.
Porcellanite
8.
Chert
Siliciclastic
sediment
1.
Composition of all grains present in major amounts
1.
Gravel
1.
Composition of all grains present in minor amounts
2.
Grain fabric (gravels only)
2.
Sand2.
Texture and composition of siliciclastic grains
present as matrix (for coarse-grained clastic
sediments)
3.
Grain shape (optional)
3.
Silt
4.
Sediment color (optional)
4.
Clay, etc.
Volcaniclastic
sediment
1.
Composition of all volcaniclasts present in major
amounts
1.
Breccia1.
Composition of all volcaniclastics present in minor
amounts
2.
Lapilli
2.
Composition of all pelagic and neritic grains
3.
Ash/tuff2.
Composition of all neritic and pelagic grains present
in minor amounts
3.
Texture of siliciclastic grains present in major
amounts
4.
Volcanic, etc.
3.
Texture of siliciclastic grains present in minor
amounts