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<br /> <br />((if <br /> <br />1 r r <br /> <br />!vtpM.lion <br /> <br />Chlorides.nd <br />IUl'lluol <br />lOdi,um, mllnu!um. <br />calcillm,ln <br />,o,.ssiumc.tried <br />with wile, vapor <br /> <br />r r r <br /> <br />ConcltnsatiMl <br />Nilrol.n,olYi1n, <br />Clfbondiolide <br />dissolved <br /> <br />-+ <br /> <br /> <br />Prteipilttion ---. <br /> <br /> <br />To.p"",,,''"';oo;' ..".~.;. cu <br />'fUS IS soil wiler <br />I. COZdissolved In sail, Ca, MI. NI <br />biu,!lon.les.ddecl 10 wiler <br />2. S04di>>orved in Irus whelt o_illalion ' <br />ofsulfiduIs oCCUflinl --+ <br />3. Connate wife' Ilf soluble compounds of <br />mllin.wdimenls.dded <br /> <br />Ocean <br /> <br />+---- Outflow 10 ocnn <br />Ctrriesminer.lm.tterb.u <br /> <br />+---- Subsurl.ct OIltflow 10 oceu <br /> <br />1 <br /> <br /> <br />Atmospl\er. <br /> <br />I <br /> <br /> <br />Runoff <br /> <br />1 <br /> <br />1 <br /> <br />1 <br /> <br />- <br /> <br />I <br />Effluent <br />-- <br />sUP"', <br /> <br />- <br /> <br />:;;..0( <br /> <br />1 <br /> <br />r <br /> <br />;::.0: <br /> <br />r <br /> <br />1 <br /> <br />I <br /> <br />r <br /> <br />I <br /> <br />i <br /> <br />T,.nspiralion <br />Minelli mtlltllallely <br />'ebinul in soil, panty <br />tlrntd o!! in crop plants <br />t <br /> <br />1 <br /> <br />Evapor.lion <br />Mlner,l m.ttu <br />'tt'lned in soil <br /> <br />Soil water <br />1. C02 ,deled. forml"1 carbonic.del <br />2. Reaction of SOllmlnmls with <br />carbonlc,ciel 10 lorm soluble <br />blcarbonlles <br />Precipitation 01 coUoidal iron. <br />aluminum. .nd silica; of <br />carbonates .5 solubllit~ limit <br />isreactltd <br />4. Cltion neh.nle <br /> <br />----+ <br /> <br />! I <br /> <br />~i <br /> <br /> <br />Ground water <br />I. C.tionuchan,e <br />2. SuUate reduchon by ~nimoblC <br />b.ctlri..substitutinl <br />bicarbon.telor tile 5ulf.l. <br /> <br />Figure 1. Geochemical cycle of surface and ground waters. (USGS) <br /> <br />14 <br /> <br />! <br /> <br /> <br />t <br />i <br />i <br />