skip to main content

Alteration of Enamel Carbonate Environments during Fossilization

Sponheimer, Matt ; Lee-Thorp, Julia A

Journal of Archaeological Science, February 1999, Vol.26(2), pp.143-150 [Periódico revisado por pares]

Texto completo disponível

Citações Citado por
  • Título:
    Alteration of Enamel Carbonate Environments during Fossilization
  • Autor: Sponheimer, Matt ; Lee-Thorp, Julia A
  • Assuntos: Fossilization, Diagenesis, Enamel, Carbonate, Ftir Spectroscopy, Diet, Environment ; Fossilization, Diagenesis, Enamel, Carbonate, Ftir Spectroscopy, Diet, Environment ; History & Archaeology
  • É parte de: Journal of Archaeological Science, February 1999, Vol.26(2), pp.143-150
  • Descrição: An understanding of enamel diagenesis is necessary to ensure sound isotopic palaeodietary and palaeoenvironmental reconstructions. Although carbon isotope signals of browsing and grazing herbivores remain distinct in enamel even after millions of years, subtle alteration of isotopic signatures does occur. To better understand this change we analysed modern and fossil enamel from a number of South African sites using Fourier Transform Infra-Red spectroscopy. Our results indicate that while there is little evidence of increased crystallinity in fossil enamel, there is a small but significant change in the proportion of carbonate ions occupying hydroxyl and phosphate sites. This seems to occur early in the process of fossilization, after which there is no noticeable change. It is also important to note that the degree of alteration varies significantly within and between sites. We suggest that this change results from one or some combination of three mechanisms: exogenous carbonate...
  • Idioma: Inglês

Buscando em bases de dados remotas. Favor aguardar.