Late cenozoic reconfiguration of low order fluvial channels under conditions of crustal instability (NE of Asia) /[ Reconfiguration des systèmes fluviatiles d'ordre inférieur en contexte d'instabilité crustale au Cénozoïque récent (Nord-Est de l'Asie).]

Low order nver channels are highly responsive to tectonic movements which cause local intra-valley restructuring, channel overdeepening, and, finally, reconfiguration of nver basins Lacking a tolerance to changes of tectonic conditions, which is typical of large river valleys, they can be viewed as an indicator of changes in regional structure and geodynamics. These features are especially pronounced in areas of crustal instability, such as a system of ridges and rift valleys on the north-east of Sakha (Yakutia Republic), extending along the boundary between North-American and Eurasian plates.Les rivières d'ordre inférieur sont fortement sensibles aux mouvements tectoniques qui provoquent des restructurations internes, l' incision des chenaux et finalement la reconfiguration des bassins fluviaux. L'absence de tolérance au changement des conditions tectoniques, typique des grands systèmes fluviatiles, peut être interprétée comme un indicateur du changement du contexte structural et géodynamique. Ces structures sont particulièrement prononcées dans les secteurs de forte instabilité crustale, comme le système de rides et rifts du Nord-Est de Sakha (République de Yakutie), qui s'étend le long des limites entre les plaques nord améncaine et eurasienne.Patyk-Kara Natalia G., Spasskaya Irina. Late cenozoic reconfiguration of low order fluvial channels under conditions of crustal instability (NE of Asia) /[ Reconfiguration des systèmes fluviatiles d'ordre inférieur en contexte d'instabilité crustale au Cénozoïque récent (Nord-Est de l'Asie).]. In: Quaternaire, vol. 15, n°1-2, 2004. Fluvial Archives Group. Clermond-Ferrant 2002. pp. 129-134

Geotechnogenic formation of mineral deposits

The human geologic activity and socioanthropic lithogenesis phenomenon are analyzed as well as synchronous initiation of correlated with this process substance-mineral and geochemical formations. The basis for further classification of geotechnogenic formations and their forming deposits is suggested

Geotechnogenic formation of mineral deposits

The human geologic activity and socioanthropic lithogenesis phenomenon are analyzed as well as synchronous initiation of correlated with this process substance-mineral and geochemical formations. The basis for further classification of geotechnogenic formations and their forming deposits is suggested