Laserfiche WebLink
<br />16 <br /> <br /> <br />002290 <br /> <br />. <br /> <br />Long-range Program <br /> <br />'lhe long-range, 35-year program of ,geologic and mineral- <br />resource investigatioos proposed by the Geological SUrvey would go <br />:far beyond ilIImediate aspects of water-resource management. Its <br />purpose would be knowledge sufficient for intelligent management <br />and use of all resources derivable from the earth's crust Within <br />the Paci:fic Southwest. <br /> <br />It would include three phases: (1) reconnaissance, chie:fq <br />by aeranagnetic and gravity surveys, to discriminate and outline <br />gross geologic :features; (2) general-purpose geologic anaJ,ys1s and <br />mapping, most camnonly at scales of 1:62,500 or 1:24,000, chiefq <br />to guide immediate search for minerals and mineral f'uels, and to <br />facilitate site selection for highW8lfs and other engineering works <br />of diverse kinds; and (3) topical studies continually extending the <br />frontiers of geologic knowledge to win new advantages from the <br />earth's crust. <br /> <br />A substantial amount of geologic knowledge has been and is <br />being gathered in the Pacific Southwest (see fig. 5). However, at <br />the current rate of about 2S'man-years of professional effort per <br />~ (by the Geologic Division of the Geological SUrvey), more than <br />a centur,y would elapse before all the region would be covered <br />adequateq. Current knowledge is distributed most unequal~, so <br />that SaDe parts of the region call for much more future attention <br />tlian other parts, as is shown by the following table and by figures <br />6 and 7. <br /> <br />. <br />