The lack of inorganic removal of dissolved silica during river-ocean mixing

Document Type

Article

Date of Original Version

1-1-1973

Abstract

The significance of the inorganic removal of dissolved silica from estuarine zones was investigated at three river mouths: the Orinoco, the Savannah and the Mississippi. Particular attention was given to the Mississippi river plume, where extensive inorganic silica uptake had been reported. Mixing curves and laboratory dilution experiments provided little evidence that the phenomenon was widespread. Because of an uncertain fresh water tie point, some inorganic uptake could not be completely ruled out for the Orinoco, but, in the plumes of the Savannah and Mississippi rivers, no inorganic silica removal was indicated. In contrast to published experiments on river sediments, laboratory dilution studies on suspended matter from the Mississippi river showed release of dissolved silica instead of uptake. © 1973.

Publication Title, e.g., Journal

Geochimica et Cosmochimica Acta

Volume

37

Issue

11

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