O mehanizme formirovanija alljuvial'nyh rossypej v vodotokah, drenirujuščih lokal'nye struktury

Sur le mécanisme de la formation des placers alluviaux dans les cours d'eau drainant des structures locales

Auteurs :
HMELEVA, N. V.
SYSOEVA, S. M.

Description :
The paper considers the mechanizm of alluvial placers formation, which are located in buried valleys on a structure's wings. The metal particles accumulation in placer is mostly controlled by differences in the channel process upstream and downstream of the growing structure; the channel within the limits of the structure itself is distinguished by a chord-like profile, typical for growing structures. The rate of structures's wings uplift determines also the preservation of metal-bearing layers formed in the past at different-stages of the relief's evolution. - (L'A.).


Type de document :
Article de périodique

Source :
Geomorfologiâ (Moskva), issn : 0435-4281, 1990, n°. 1, p. 97-102, Collation : Illustration, Références bibliographiques : 3 réf.

Date :
1990

Editeur :
Pays édition : Russie, Federation de, Moskva, Nauka