Table 1.

Table T1. Outline of granular sediment classification scheme.

Sediment class Major modifier Principal name Minor modifier

Pelagic sediment 1. Composition of pelagic
grains present in major
amounts.
2. Size and shape of clastic
grains present in major
amounts.

1. Ooze
2. Chalk

3. Limestone

4. Radiolarite
5. Diatomite
6. Spiculite

7. Chert
1. Composition of pelagic
grains present in minor
amounts.
2. Size and shape of clastic
grains present in minor amounts.

Siliciclastic sediment 1. Composition of all grains
present in major amounts.
2. Grain shape (optional).
3. Sediment color (optional). 1. Gravel
2. Sand
3. Silt
4. Clay
1. Composition of all grains
present in minor amounts.
2. Size and shape and composition
of siliciclastic grains present as
matrix (coarse-grained clastic
sediments only).

Volcaniclastic sediment
1. Composition of volcani-
clasts present in major
amounts.
2. Composition of all pelagic
grains present in major
amounts.
3. Size and shape of
siliciclastic grains present
in major amounts. 1. Breccia
2. Lapilli
3. Tephra 1. Composition of all volcani-
clasts present in minor amounts.
2. Composition of all pelagic
grains present in minor amounts.
3. Size and shape of siliciclastic
grains present in minor amounts.

Sediment class	Major modifier	Principal name	Minor modifier
Pelagic sediment	1. Composition of pelagic grains present in major amounts. 2. Size and shape of clastic grains present in major amounts.	1. Ooze 2. Chalk 3. Limestone 4. Radiolarite 5. Diatomite 6. Spiculite 7. Chert	1. Composition of pelagic grains present in minor amounts. 2. Size and shape of clastic grains present in minor amounts.
Siliciclastic sediment	1. Composition of all grains present in major amounts. 2. Grain shape (optional). 3. Sediment color (optional).	1. Gravel 2. Sand 3. Silt 4. Clay	1. Composition of all grains present in minor amounts. 2. Size and shape and composition of siliciclastic grains present as matrix (coarse-grained clastic sediments only).
Volcaniclastic sediment	1. Composition of volcani- clasts present in major amounts. 2. Composition of all pelagic grains present in major amounts. 3. Size and shape of siliciclastic grains present in major amounts.	1. Breccia 2. Lapilli 3. Tephra	1. Composition of all volcani- clasts present in minor amounts. 2. Composition of all pelagic grains present in minor amounts. 3. Size and shape of siliciclastic grains present in minor amounts.

Note : This table is also available in ASCII format.