GEOCHEMICAL STUDIES OF RECENT SEDIMENTS FROM THE GULF OF ST. LAWRENCE. II. GEOCHEMISTRY OF TRACE ELEMENTS•

GEOCHEMICAL STUDIES OF RECENT SEDIMENTS

FROM THE GULF OF ST. LAWRENCE.

II. GEOCHEMISTRY OF TRACE ELEMENTS•
ALI • I. BELTAGY AND B. F. d’ANGLEJAN
Institute of Oceanography and Fisheries. Alexandria. Egypt.
* Me Gill University. Montreal. Canada.
ABSTRACT
The abundace of the e1eme’lt Co. Cr. Cu. Mn. He. Hi. Pb.
Sr. Se and Zn in the recent sediment of the Gulf of St.
Lawrence were studied. The mineralsical assiciations of
the trace element. was inferred from the study of the detrital
fraction of the sediments. The detrital character of the
element decreases in the order Cr> Co> Zn> Mn> He> Hi> Pb>
Cu> Sr.
Statistical anlysil of the results of the non-detrital
fraction suggest that sorption by organic matter is important
for Co. Cr. Cu. Hi. Pb and Zn. Precipitation in association
with Fe. Mn hydroxide provides major depositinal Pathways
for Cr. Cu. Pb. Zn and Se. Carbonta may contribute to
concentrat of Co. Pb. Mo. and Sr. Adsorption on the clay
particls appear. to be particularly effecient for removal
of He from sea water.