Role of Tectonics in Phosphorus Distribution and Cycling
Published:January 01, 2000
Michael W. Guidry, Fred T. Mackenzie, Rolf S. Arvidson, 2000. "Role of Tectonics in Phosphorus Distribution and Cycling", Marine Authigenesis: From Global to Microbial, Craig R. Glenn, Liliane Prévôt-Lucas, Jacques Lucas
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Until very recently, the effect of tectonisrn 011 the exogenic phosphorus cycle has been neglected. Currently, the subduction of phosphorus associated with organic matter buried in ocean sediment to the mantle represents a significant flux relative to other fluxes within the exogenic phosphorus cycle. Phosphorus is generally considered to have been the limiting nutrient for oceanic primary production over much of geologic time. Therefore, changes in the total exogenic phosphorus mass control, to a certain extent, the amount of phosphorus available for oceanic production. Over geologic time, the exogenic phosphorus mass is likely governed by plate tectonics; specifically, by the balance between input of newly formed crystalline rock and the output via subduction of oceanic crust and the overlying sediment to the mantle.
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Marine Authigenesis: From Global to Microbial
This volume is a collection of 33 state-of-the-art papers focusing on various aspects of authigenic and diagenetic marine minerals and related global elemental cycling. The commingling of the various studies of authigenic minerals in this volume, including the most recent advances in knowledge concerning the occurrence and origins of phosphorites, glauconites, dolomites, siderites, manganese-iron associations, barites, ironstones, and other marine chemical sediments/sedimentary rocks of early authigenic/diagenetic origin, is partly the result of the increasing awareness that there are many overlaps, even direct co-associations, between different authigenic minerals, both in time, space, and genesis. Taken together, this compilation represents a holistic approach towards marine authigenesis that considers the integrated whole more than the simple sum of its parts.