Table T1.

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. Ooze 1. 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. Sand 2. 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. Breccia 1. Composition of all volcaniclastics present in minor amounts

2. Lapilli

2. Composition of all pelagic and neritic grains
3. Ash/tuff 2. 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

Sediment class	Major modifiers	Principal names	Minor modifiers
Pelagic sediment	1. Composition of pelagic grains present in major amounts	1. Ooze	1. Composition of pelagic and neritic grains present in minor amounts
	1. Composition of pelagic grains present in major 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. Sand	2. 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. Breccia	1. Composition of all volcaniclastics present in minor amounts
		2. Lapilli
	2. Composition of all pelagic and neritic grains	3. Ash/tuff	2. 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
			3. Texture of siliciclastic grains present in minor amounts