Titre du document

II.—Radio-activity and the Earth’s Thermal History

Lien vers le document
Nom du Corpus

AstroConcepts

Auteur(s)
  • Arthur Holmes
Résumé

So far, the source of the heat lost from the earth has been assigned only to the disintegration of the radio-active elements. Besides this, heat is liberated near the surface by the processes of weathering. The decomposition of one gram of average rock is accompanied by the generation of about 120 calories. Owing to its extreme slowness, this source of heat generation is of practically no importance except locally, where for a time it may succeed in appreciably steepening the temperature gradient. The heat liberated by weathering is probably balanced by the absorption of heat at greater depths, which is involved in the processes of metamorphism. Of much greater importance is the question whether the earth can still be regarded as possessing an ancient heritage of heat dependent on its origin.

Langue(s) du document
Anglais
Année de publication
1915
Revue

Geological Magazine

Éditeur
Cambridge
Type de publication
journal
Type de document
research-article
Présence de XML structuré
Non
Version de PDF
1.4
Score de qualité du texte
8.288
Nom du concept
  • Planetesimals
Catégories Inist
  • 1 - sciences appliquees, technologies et medecines ; 2 - sciences biologiques et medicales ; 3 - sciences biologiques fondamentales et appliquees. psychologie
Identifiant ISTEX
AC7DA2953BD1D844BFCCF8EDD949FE5480F74936
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