| Show GROUND WATER In Cr hll the tite 11 loses we the occur 0 t round water In dated fluid nd II iii porus porous ledl sedi formations are aro now non general generally 1110 little h line been written cal con the sources IC of supply for tor sidle lii In tile the crystalline rok rocks I or this thle hen nn an opportunity was stas In with nut b by or of orthe the UnIted States Surey Survey of the waters ot of special attentIon was given to ILl tOte the occurrence of water In Ilch rocks rocke Mr rr I B I F o of tile the surn survey lotte a paper to the annual hydrologic report WI Water In hl h the len gen anal 1 ot of tOils investigation are set forth Te The term Is applied to rocks rork trOunce component IT grains h hare crystallized into their present relative contrasted them nr are thip types are lall hail down doten tinder ald anti which cencI goner ally consist ot of fragments of IldI older reeks rok arranged fl th the hl of rocks tto two types treA In 1111 tie be rockS Alrh stunt nA as granite sf gab nb hlo hue grit It etc ivere once onN In I a conditIon eras cry toad 01 oil cooling all clod 1 rocks Pich such A as 1111 which were orl ori lher or Igneous but beaus altered b by pub processes cs to their present feral torm The Tho Im or mar bias bIrR ar are classed alth Ih the rocks The Tite ot of the crystalline rocks occurs so 0 far 11 as it II can be by ni wholly In joints faults or other the Iho pores and being too clo close to 10 permit native The water seems to 10 occur largely largel In the vertical Joints or faults In the zones consisting of crowded In a I common spacing between the joInts II Is 3 to 7 feet but ut In MOe eon ouri thc OhiO Ir farther Ilch apart tt t depths of noore ihal bait 3 50 feet the tho space greater owing to the dying Olt flout ot of Joints The ho spacing of the I Is regular II iii the first 20 feet teet helen helo th lie surface I they le Irge average 1 toot foot for tor the 30 tell feet rein 4 to 7 fret teet In the Iho tollo log Ing r 50 fre feet they r rout 6 to 20 teat et or 01 moro apart Tile hr most for fOI water lre are lt itt tiso Iho or of two Iwo or more nutre or of the joint systems tile led at these oren often lt luto I |
