Journal ArticleDOI
Inhibition of apatite precipitation in the marine environment by magnesium ions
TLDR
In this paper, an amorphous calcium phosphate precipitate rapidly converts to apatite in Mg-free sea water through exchange of magnesium for calcium, but no conversion was observed in normal sea water over an eight month experiment.About:
This article is published in Geochimica et Cosmochimica Acta.The article was published on 1970-05-01. It has received 143 citations till now. The article focuses on the topics: Amorphous calcium phosphate & Magnesium ion.read more
Citations
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Journal ArticleDOI
Calcium Carbonate Formation and Dissolution
TL;DR: Analysis of Calcium Carbonate−Organic Matter Interactions and Biominerals and Nanophase Carbonates: General Considerations 3.3.1.
Book
Petrology of sedimentary rocks
TL;DR: The physical, chemical, and biologic properties of sedimentary rocks, as revealed by petrographic microscopy, geochemical techniques, and field study, are discussed in this paper.
Journal ArticleDOI
Early diagenesis of organic matter in Peru continental margin sediments: Phosphorite precipitation
Philip N. Froelich,Michael A. Arthur,William C. Burnett,M Deakin,V Hensley,Richard A. Jahnke,Lisa Wells Kaul,K.-H Kim,Kevin K. Roe,A Soutar,C Vathakanon +10 more
TL;DR: Pore water chemistry (total dissolved CO 2, NH 4, NO 3, NO 2, PO 4, Si(OH) 4, Ca, Mg, Fe, Mn, SO 4, H 2 S and F, and titration alkalinity) and sediment characteristics (porosity, dry bulk density and formation factors) were determined on a centimeter-scale spacing in the upper 20-40 cm of sediments under intense upwelling areas on the Peru continental shelf as discussed by the authors.
Book ChapterDOI
The Global Phosphorus Cycle
TL;DR: A brief overview of the various components of the global phosphorus cycle is given in this paper, including a discussion of the most pressing research questions currently being posed and research efforts presently underway to address these questions.
Journal ArticleDOI
Sm-Nd in marine carbonates and phosphates: Implications for Nd isotopes in seawater and crustal ages
H. F. Shaw,G. J. Wasserburg +1 more
TL;DR: In this paper, the authors explored the possibility of establishing Nd isotopic variations in seawater over geologic time by examining calcite, aragonite, and apatite as possible phases recording seawater values of ϵ_(Nd).
References
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Preparation of artificial seawater1
Journal ArticleDOI
The genesis of carbonate apatites
TL;DR: In this article, the formation of a carbonate apatite by phosphate replacement of calcite in alkaline solutions and the structural positions of the carbonate groups are discussed, which indicate calcite replacement by low concentrations of phosphate to be the principal mechanism of formation of marine phosphorite deposits.
Journal ArticleDOI
Sea Water: Saturation with Apatites and Carbonates
TL;DR: Pacific Ocean water, on the average, appears to be slightly supersaturated at all temperatures with hydroxyapatite and carbonate fluorapatites.