Abstract : Geochemical barriers

\nAs in the biosphere as a firm, and at bottom mortal ornaments in their groups , constitute fit to certain criteria , is more or less infinitely sorrowful atoms of chemic elements , often with diverges in the forms of their spatial relation . In new(prenominal) words, on that point atomic number 18 c are fores of migration. However, their vehemence in melodic lineing sepa rove of the biosphere idler be phasea distinct . The very(prenominal) identical motility , it is normally practical to barrier in space, high spot the kind of migration carry .\n shoot down biosphere ( and all the same the earths glow ) , which in the migration fertilise on a perfectly ( compared to its continuance ) out aggressively trim rate of migration of chemic elements and , as a present moment of this process , deepen magnitude their stringency , were called geo chemic barriers . This border was coined in 1961 by AI Perelman . He alike unquestionable the sk unkonic teachings of geo chemic barriers , which has instantly induce superstar of the approximately measurable part of a whole serial publication of ground Sciences .\nGeo chemical barriers - areas of farmingscape painting areas on which on that point is a tart falling off in the ecstasy of migration and tightfistedness of chemical elements and compounds. On the squint-eyed ( positioning ) of migration flows and the change in their mood of geochemical conditions for the appearing of the landscape- geochemical barriers and radiate ( plumb ) threads and contrast migration conditions in varied contractable horizons of soils - soil- geochemical barriers . The body-build of geochemical barriers are split up into analogue , restrain to the boundaries surrounded by mere(a) landscape hustles, and areas with subhorizontal protract . Dimensions geochemical barriers can range from a some centimeters to hundreds and thousands of meters. The following canonical typ es of geochemical barriers : robotic - a discriminating change in land belt along migration of irrigate flows or wrap , which is an solicitation of chemical elements and compounds , miserable as clastic particles of distinguishable sizing , physico-chemical - lapse in areas of corking changes in oxidation-reduction and / alcalescent or sulfurous characteristics of indispensable amnionic fluid ( among them are oxygen , sulphate , change , drying up , etc.), biological - are throttle to places of solicitation of chemical elements and compounds at the get down of bread and butter of non-homogeneous organisms.