Diagenesis of dissolved aluminum in organic-rich estuarine sediments

doi:10.1016/0016-7037(84)90252-7

Geochimica et Cosmochimica Acta

Volume 48, Issue 2, February 1984, Pages 299-313

https://doi.org/10.1016/0016-7037(84)90252-7 Get rights and content

Abstract

The sedimentary geochemistry of dissolved Al is complicated by a number of different reactions. In this study we show that complexation by organic matter, adsorption to Fe-oxyhydroxides, and reaction with Si in solution have important effects on the distribution of dissolved Al in sediments. In the absence of physical resuspension of sediment into overlying waters, dissolved Al is rapidly consumed at the sediment-water interface and is subsequently released upon reduction of Fe-oxyhydroxides. This release does not cause noticeable perturbations in dissolved Al concentrations in sediments because of rapid consumption reactions which mask the true mobility of Al. Results suggest that one of the consumption reactions may be due to formation of an Fe-Al-silicate. The amount of authigenic aluminosilicate formed in estuarine sediments must be very small relative to the detrital component. In the deep-sea, however, the long residence time of Fe-oxyhydroxides at the sediment-water interface, with resulting greater accumulation of adsorbed Al may explain the abundance of Al in Fe-smectites reported from many different areas.

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^∗: Present address: Marine Sciences Research Center, SUNY at Stony Brook, Stony Brook, NY 11794.

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ArticleDiagenesis of dissolved aluminum in organic-rich estuarine sediments

Abstract

Adv. Geophys.

Geochim. Cosmochim. Acta

Deep-Sea Res.

Geochim. Cosmochim. Acta

Earth Planet. Sci. Lett.

Mar. Chem.

Geochim. Cosmochim. Acta

Est. Coast. Mar. Sci.

Earth Planet. Sci. Lett.

Geochim. Cosmochim. Acta

Geochim. Cosmochim. Acta

Est. Coast. Mar. Sci.

Geochim. Cosmochim. Acta

Earth Planet. Sci. Lett.

Geochim. Cosmochim. Acta

Geochim. Cosmochim. Acta

Geochim. Cosmochim. Acta

Geochim. Cosmochim. Acta

Geochim. Cosmochim. Acta

Chem. Geol.

Geochim. Cosmochim. Acta

Earth Planet. Sci. Lett.

Geochim. Cosmochim. Acta

Mar. Chem.

Geochim. Cosmochim. Acta

Geochim. Cosmochim. Acta

Geochim. Cosmochim. Acta

Neth. J. Sea Res.

Mar. Chem.

Diagenesis under the sediment-water interface of Long Island Sound: I. Decomposition and nutrient element geochemistry (S, N, P)

Adv. Geophys.

Relationships of tube-dwelling benthos with sediment and overlying water chemistry

The effects of macrobenthos on chemical properties of marine sediment and overlying water

Sedimentary pyrite formation

Amer. J. Sci.

Early Diagenesis: A Theoretical Approach

The aluminosilicate fraction of north Pacific manganese nodules

Geochim. Cosmochim. Acta

Sediment-water exchange in Chesapeake Bay

The influence of a diffusive sublayer on accretion, dissolution and diagenesis at the sea floor

Neoformation de montmorillonite á partir de diatomèes et decendres dans les sèdiments marins de Santorin (Mèditerranèe Orientale)

Compte Rendus

Article
Diagenesis of dissolved aluminum in organic-rich estuarine sediments