| Show what copper means to sevier seuier valley by E F B daude M E continued from issue of dec 16 15 oc occurs curs in in and veins are arc filled while the molten mass is flowing in which case native copper or sulphide of copper is forming it also occurs in in contacts with metamorphic near lime this type of copper has been found in in deep sea deposits also evidences of this kind of have taken place in this district some recent hydrothermal hydro thermal action obscuring in the older flows applying these trones theories to our area one wonders whether the deposits deposit S were not made under the sea rising with the rest of the terrain in perhaps early tertiary times and received metamorphic reactions near the surface thus making the evidence so obscure at the start clear after some study the great actions of bation i in n studying cop copper p er bearing minerals is is still to a large extent unknown and as eruptions of effusive rocks are even today taking place in the beds of the northern pacific ocean in in different parts there is no do doubt abt in in my mind that such an action was as possible perhaps when the sevier vier valley was under carboniferous seas these great effusive flows would cool near the top where they cut through the ocean bed and the cooling down to the uniformity of the porous rock would be a slow downward mo movement vemont this evidence is well illustrated in the thermal action of the present day thermo hot springs in milford valley which have a origin in the tushar range areas these waters are coming from great depth in a flat val ley at terrific speed and with great force under hydrostatic pressure hero here the action is simply reversed the pressure comes from below while it 0 once n c e ca came m c f from r 0 m t the h e top a as s i it t must mu s t have 1 i ave done d 0 e in i n our 0 ur case c a se by such s uc h action deposits would be hot at the bottom and cool at the top causing a circulation of vapors that is waters that have the power to concentrate cen from this theory together with the visible evidence I 1 conclude that the deposition of commercial copper at depth is very probable from these thoughts and geological observations as well as from aholo gics 11 in i michigan the conclusion is inevitable that the group of properties owned by the richfield silver lead zinc company in i n the big basin are most important in copper possibilities bili ties and should receive the utmost consideration an attempt should bre be made to prove conclusively the depth of the deposits and when it is proven there can be no doubt that worthwhile results will be obtained the evidence of the facts relating to the question of the origin of these deposit sis full proof theoretically eti cally and the drill core will give the practical proof |
