| Computer Code: |
LADD |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Quaternary Period (Q)
— Quaternary Period (Q) |
| Lithological Description: |
Lacustrine deltaic deposits comprise a coarsening upward sequence of sediments laid down in a prograding delta at the fluvial-lacustrine boundary as fluvial current velocity is dissipated. The deposits comprise sand, silt, clay, and the remains of brackish water organisms and organic matter. Deltaic deposits can be subdivided in a variety of ways, for example by fluvial, wave and tidal influence. |
| Definition of Lower Boundary: |
none recorded or not applicable
|
| Definition of Upper Boundary: |
none recorded or not applicable
|
| Thickness: |
none recorded or not applicable
|
| Geographical Limits: |
none recorded or not applicable
|
| Parent Unit: |
Lacustrine deposits (LDE)
|
| Previous Name(s): |
Lacustrine delta deposits [Obsolete Name and Code: Use LADD]
(-2278)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| McMillan, A A and Powell, J H. 1999. The classification of artificial (man made) ground and natural superficial deposits. British Geological Survey Research Report, RR/99/04. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S103
S103
|
