Computer Code: |
LDE |
Preferred Map Code: |
notEntered |
Status Code: |
Full |
Age range: |
Quaternary Period (Q)
— Quaternary Period (Q) |
Lithological Description: |
Lacustrine deposits were laid down as deltaic, lake bottom and shore sediments in lakes. They include clastic deposits, composed of coarse-grained bedload and suspended fine-grained material brought by streams flowing into the lake. Under arid and semiarid conditions evaporites form an important component of lake sediments.
Includes fine-grained sediments (i.e. clay and silt), commonly laminated, and can contain thin layers of organic material or sand. |
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: |
Superficial deposits (SUPD)
|
Previous Name(s): |
Lacustrine deposits (undifferentiated) [Obsolete Name and Code: Use LDE]
(-4755)
|
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: |
S023
E014
S013
S031
S031
E208
E225
E070
E077
S032
S032
E059
E141
S056
S066
S030
S039
S096
S064
S074
S076
S077
S093
S096
S115
S052
S128
S130
S131
E214
|