58 



Table 4-2 

 Royal River Core Sample Fine Fraction Mineralogy Results 































"s 









It 



a 

 e 



•a 



1 



•i 



a 



a 



1 



1 



.9 

 S 



1 



6 



5 



-2 







i 



1 



sa 



a 

 a 

 e 



s 



a, 



w 



Ji 



a 

 u 



S 



1 



e 

 1 



o 



o 



a 

 « 

 s 



1 



§ 

 p 



s 



u 



a 



o 



•c 



» 

 el 



s 



i 



e 



B. 



1 



a 



"S 







^ 







1 



« 



b 



►^ 

 ^ 



</5 





1 



a 





B 







_2 





^ 



S 



Key 



RR-7 



1- UP 



F 

















^^ 











Min. Parameter 



RR-8 

 RR-15 



UP 

 UP 



F 

 M 









X 







x" 



..:x: 



X 



X 



X 



X X X" 

 X X 



Occurrcace 



XX Abundant 



RR-6 

 RR-5 

 RR-3F 

 RR-3M 



Add UP 

 AddU/M 

 AddMID 

 AddMID 



M 

 M 

 M 

 M 



X 



X 

 X 

 X 





X 



X 

 X 





X 

 X 

 X 

 X 



X 



X 



X 

 X 



X 



XX 

 X 



X 







X 



X 

 X 

 X 



X X X 



XXf X X 

 X X X 

 X X X 



X Common 5 



X Rare 



Absent 



Grain size 



RR-26 



MID 



F 





X 



X 







X 



X 



X 



X 







X X 



IHHIHI^^HHb 



RR-18 

 RR-10 

 RR-28 



MID 



F 



X 



X 



X 

 X 



X 



X 

 X 





X 



X 



X 



X 

 X 









X X 



X 



M Medium 



MID 



:M 



F Fine 



MED 



X X 



Dredged Sediments 



RR-29 



MID 



E 



M 



X 



X 





X 





X 



X 



X 









X 



Disposal Destination 



RR-12 

 RR-22 

 RR-21 



M 



X 



X 



X 



X 



X 



X 



X 



X 

 X 

 X 















X X 



PDA 96 UDM 



PDA 96 CDM 



„x 



^^^^^^ 



rai&Si 





Add = Refers to additional core analyses. 



In contrast to the lack of marsh and mudflat foraminifera in the upper reach, these 

 microfossils were abundant in the outer reach of the river, with only one thecamoebian 

 found in Core RR-12. The middle zone of the estuary had variable population sizes, with 

 marsh and mudflat foraminifera predominant. The cores collected from the middle zone of 

 Royal River contained relatively fewer thecamoebians and a rare number of shelf 

 foraminifera. 



Because thecamoebians and mudflat/marsh foraminifera are all benthic species that 

 live on or in the substrate, transportation of the microfossils is likely to be limited in the 

 Royal River. Many of the calcareous foraminifera had protoplasm remains on their shells, 

 The Portland Disposal Site Capping Demonstration Project, 1995-1997 



