inscription
Portail d'information géographique

Résultats de la recherche (6 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • The copper spike
  • Assessing the global meltwater spike
  • , and J. S. Killingley (1977, Nature London 269, 661-663) and W. H. Berger (1978, Deep-Sea Research 25, 473-480) reconstructed meltwater spikes similar to those actually observed in the Gulf of Mexico and thus apparently confirmed the Worthington
  • hypothesis. It is shown that this conclusion is unwarranted. The primary flaw in the reconstructed meltwater spikes is that the mixing intensity used in the deconvolution operation is overestimated. As a result, structure recorded in the mixed isotopic record
  • The radioactive disintegration of K supplies a method of datation for Potassium-bearing minerals and rocks, by measuring one daughter product, the A. An improved Argon measuring method is used, more accurate than the conventional one with spiking
  • . This excursion (the M event) may correlate with the Gulf of Mexico meltwater spike.
  • change yet obtained from an open ocean location. The record includes a three-step termination and the first direct evidence of an early deglacial meltwater spike in the open sea.