skip to main content
Idioma:

The history of attempts to establish a quantitative time-scale

Wager, L. R.

Geological Society special publication, 1964-01, Vol.1 (1), p.13-28 [Periódico revisado por pares]

The Geological Society of London

Texto completo disponível

Citações Citado por
  • Título:
    The history of attempts to establish a quantitative time-scale
  • Autor: Wager, L. R.
  • É parte de: Geological Society special publication, 1964-01, Vol.1 (1), p.13-28
  • Notas: ark:/67375/996-SKXGRCGJ-L
    istex:6B723051F478C41112766A0ECDCE35FABB89AC66
  • Descrição: The great age of the Earth was first scientifically argued by Hutton in the eighteenth century. Next, a world-wide time-order scale of geological events was established using the biostratigraphic methods of William Smith. In the second half of the last century ‘hour-glass’ methods, based on salinity of the oceans and the maximum thickness of sediment, provided a framework for a rough time-scale, measured in years. The development of a reasonably detailed and satisfactory time-scale for geology is, however, an achievement of the present century and has been accomplished by using as an hour-glass method the rate of radioactive decay of certain elements present in rocks and minerals of known position in the time-order scale. In 1913, from tentative radiometrically established ages, Holmes produced a quantitative Phanerozoic time-scale, and he and others have gradually refined it. In linking the isolated dates obtained by radiometric methods with the biostratigraphic time-scale, use has usually also been made of the maximum thicknesses of sediments accumulated in the various intervals of the time-order scale, and this is believed to be still the most useful method.
  • Editor: The Geological Society of London
  • Idioma: Inglês
Voltar para lista de resultados

  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

Buscando em bases de dados remotas. Favor aguardar.