A    Atmospheric                                                                
B    Bog                                                                        
CT   Cattle tank                                                                
E    Estuary                                                                    
F    Fen                                                                        
L    Lake                                                                       
LD   Lake - Ekman dredge                                                        
M    Marsh                                                                      
P    Moss polster                                                               
PP   Pitcher plant                                                              
R    River deposit, oxbow lake                                                  
S    Soil                                                                       
SA   Sand                                                                       
SC   Soil and cattle tank                                                       
SN   Snow                                                                       
BW   Wooded bog                                                                 
LW   Lake - small hollow                                                        
AP   Alluvial peat                                                              
AS   Alluvial sediments                                                         
DH   Drill Hole                                                                 
RS   Rock shelter                                                               
PM   Peat mound                                                                 
BS   Beach sediment                                                             
O    Other site type                                                            
OC   Ocean core                                                                 
Z    Bog over lake sediments                                                    
T    Terrestrial                                                                
PT   Peat                                                                       
BP   Buried Peat                                                                
CO   Colluvium                                                                  
BL   Buried lake deposit                                                        
MS   Marine sediments