Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Schulz, Heide N; Schulz, Horst D (2005): Geochemical analysis and porewater analysis of sediment profile at station M57/3_203 from Walvis Ridge. PANGAEA, https://doi.org/10.1594/PANGAEA.811591, Supplement to: Schulz, HN; Schulz, HD (2005): Large Sulfur Bacteria and the Formation of Phosphorite. Science, 307(5708), 416-418, https://doi.org/10.1126/science.1103096

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Phosphorite deposits in marine sediments are a long-term sink for an essential nutrient, phosphorus. Here we show that apatite abundance in sediments on the Namibian shelf correlates with the abundance and activity of the giant sulfur bacterium Thiomargarita namibiensis, which suggests that sulfur bacteria drive phosphogenesis. Sediments populated by Thiomargarita showed sharp peaks of pore water phosphate (<=300 micromolar) and massive phosphorite accumulations (>=50 grams of phosphorus per kilogram). Laboratory experiments revealed that under anoxic conditions, Thiomargarita released enough phosphate to account for the precipitation of hydroxyapatite observed in the environment.
Coverage:
Latitude: -22.100000 * Longitude: 14.030000
Size:
2 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text — use the following character encoding: