44 
Ganl. Bull. Singapore 70 (Suppl. 1) 2018 
Eroded layer 
Depth 
tm 
Composite tore 
ItmiCE 
19S0s CE 
w. 5500BCE 
tt. 65onset 
aJOOOKE 
ca, SMQDBCE 
ta. 1 lOQEieCE 
ca. 1 5Q006CE 
m 
i 
FINE 5 AND IN BROWN: CL At 
BROWN CLAY 
BROWN GREY CLAY 
FINE AND COARSg SAND 
ORANGE INCLUSIONS 
OREFCUY 
SLACRCUW 
LAMINATIONS 
LEAf REMAINS 
PEBBLE 
ca.IWOOBCE 
Fig. 4. Distinguishable layers and associated ages and deposition rates within the sediment core 
collected in the lower swamp of Nee Soon Catchment (location shown in Fig. 2a). 
Table 2. Estimated deposition rates within layers revealed by composite soil core for the lower 
swamp area of Nee Soon freshwater swamp forest. 
Layer 
Depth 
Age range 
Sedimentation rate 
(cm y 1 ) 
1 
0 - 50 cm 
2016 to 1950 CE 
0.76 
2 
Missing 
No data 
No data 
3 
51 - 60 cm 
1950 BCE to 5500 BCE 
0.009 
4 
60 - 80 cm 
5500 BCE to 6500 BCE 
0.04 
5 
80 - 90 cm 
6500 BCE to 9400 BCE 
0.004 
6 
90 - 100 cm 
9400 BCE to 10,000 BCE 
0.02 
7 
100- 155 cm 
11,000 BCE to 15,000 BCE 
0.011 
8 
155 - 193 cm 
15,000 BCE to 19,000 BCE 
0.0095 
