inscription
PORTAIL D'INFORMATION GÉOGRAPHIQUE

CUIRASSES DE FER ET CUIRASSES DE SILICE EN FRANCE OCCIDENTALE

Auteur :
RONDEAU A.,

Description :
IN WESTERN AND SOUTHWESTERN FRANCE THERE ARE TWO TYPES OF DURICRUSTS: FERRUGINOUS LATERITE AND SILCRETE. WHILE IN AUSTRALIA THESE DURICRUSTS SEEM TO BE CONTEMPORANEOUS AND CONTIGREOUS, THEY ARE SUPERIMPOSED IN FRANCE. THE EARLIER ONES HAS BEEN FORMED IN NORTHERN FRANCE SINCE LATE CRETACEOUS TIMES, WHILE IN THE SOUTHWESTERN PART THEIR FORMATION EXTENDED UNTIL THE OLIGOCENE. TECTONIC AND CLIMATIC IMPLICATIONS ARE DISCUSSED, E.G. CHANGES OF PALAEOLATITUDES.


Type de document :
Article de périodique

Source :
BULLETIN DE L'ASSOCIATION DE GEOGRAPHES FRANCAIS, 1975, n°. 424-425, p. 161-164

Date :
1975

Langue :
Français
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)