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Title: Ion probe measurement of rare earth elements in biogenic phosphates

The rare earth element (REE) distributions in individuals fish teeth and conodonts have been measured by ion probe. Concentrations and La/Yb ratios show little variations, except in the enamel, which suggests that REE uptake from the sedimented biogenic debris takes place at the water-sediment interface as an essentially quantitative process without fractionation. Late diagenetic disturbances remained of marginal importance. Hence, REE in phosphatic debris might reflect the input from the overlying water column.
Authors:
;  [1]
  1. (Ecole Nationale Superieure de Geologie (France))
Publication Date:
OSTI Identifier:
6701688
Resource Type:
Journal Article
Resource Relation:
Journal Name: Geochimica et Cosmochimica Acta; (USA); Journal Volume: 53:12
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; PHOSPHATE MINERALS; DIAGENESIS; ION MICROPROBE ANALYSIS; PRECIPITATION; BIOGEOCHEMISTRY; CHEMICAL COMPOSITION; DEPOSITION; FISHES; FRACTIONATION; NEODYMIUM ISOTOPES; RARE EARTHS; SEAWATER; SEDIMENT-WATER INTERFACES; SEDIMENTS; TEETH; ANIMALS; AQUATIC ORGANISMS; CHEMICAL ANALYSIS; CHEMISTRY; DIGESTIVE SYSTEM; ELEMENTS; GEOCHEMISTRY; HYDROGEN COMPOUNDS; INTERFACES; METALS; MICROANALYSIS; MINERALS; NONDESTRUCTIVE ANALYSIS; ORAL CAVITY; OXYGEN COMPOUNDS; SEPARATION PROCESSES; VERTEBRATES; WATER 580000* -- Geosciences