Sediment deposition rates on the continental margins of the eastern Arabian Sea using 210Pb, 137Cs and 14C.
Eight gravity cores from the active eastern continental margins of the Arabian Sea were dated using 210Pbxs, 137Cs and 14C. The short-term (< or = 100 years) sedimentation rates range from 0.06 to 0.66 cm/year where as the long-term (> or = 1000 years) ones using AMS 14C on planktonic foraminifera varied from 0.004 to 0.13 cm/year. For long-term chronology (< or = 50,000 years) AMS dating of well-cleaned planktonic foraminifera is most suited.
Somayajulu
B L
BL
Physical Research Laboratory, Ahmedabad, India. soma@prl.ernet.in
Bhushan
R
R
Sarkar
A
A
Burr
G S
GS
Jull
A J
AJ
D000818:Animals; D002250:Carbon Radioisotopes / Q000032:analysis*; D002588:Cesium Radioisotopes / Q000032:analysis*; D056890:Eukaryota / Q000737:chemistry / Q000378:metabolism; D019015:Geologic Sediments / Q000737:chemistry*; D007856:Lead Radioisotopes / Q000032:analysis*; D013058:Mass Spectrometry; D008956:Models, Chemical; D011834:Radiation Monitoring; D012529:Saudi Arabia; D012623:Seawater / Q000737:chemistry*; D014875:Water Pollutants, Radioactive / Q000032:analysis*; D014878:Water Pollution, Radioactive / Q000032:analysis / Q000706:statistics & numerical data; D015048:Zooplankton / Q000737:chemistry / Q000378:metabolism
D002250:Carbon Radioisotopes; D002588:Cesium Radioisotopes; D007856:Lead Radioisotopes; D014875:Water Pollutants, Radioactive