Phosphorus sources for phosphatic Cambrian carbonates
نویسندگان
چکیده
منابع مشابه
Phosphorus sources for phosphatic Cambrian carbonates
The fossilization of organic remains and shell material by calcium phosphate minerals provides an illuminating, but time-bounded, window into Ediacaran–Cambrian animal evolution. For reasons that remain unknown, phosphatic fossil preservation declined signifi cantly through Cambrian Series 2. Here, we investigate the phosphorus (P) sources for phosphatic Cambrian carbonates, presenting sediment...
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The principal low molecular weight phosphatic metabolites of the intact cornea were identified and quantitated nondestructively by phosphorus-31 nuclear magnetic resonance (P-31 NMR) spectroscopy. As part of this analytical procedure, the intracorneal pH was approximated from the resonance shift position of inorganic orthophosphate. In addition the metabolic and pH stability of incubated cornea...
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ژورنال
عنوان ژورنال: Geological Society of America Bulletin
سال: 2013
ISSN: 0016-7606,1943-2674
DOI: 10.1130/b30819.1