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<br />. <br /> <br /> <br />o <br /> <br />A <br /> <br />\ <br />cd <br />I <br />MAGNITUDED <br />o 5.3-5.9 <br />. 6.0-6.9 <br />II 7.r)-7.7 <br />[J 7.11-6.5 <br /> <br />""''''' <br /> <br />'. <br /> <br />o <br /> <br />j <br />/ <br />I <br />,../ <br />j <br />.J-.J <br />\. <br />) ....... <br />-.' \.. <br />\ <br />" <br />( <br />t. f <br />J'. , <br />..... <br />;t..? <br />.~ <br />I "J <br />0_ .r" <br /> <br />. <br /> <br />o <br /> <br />00 <br />o <br /> <br />o <br /> <br />. <br /> <br />o <br /> <br />Fioure 10. Epicenters of <br />earthQuckes in Colifornia <br />and Pacific Coost reo ion of <br />Me.tco. Open cirCles, depth <br />shallower thon 60 km; solid <br />circles, depth greater than <br />70 km. After Gutenberg and <br />Richter (1954, Figs. 8, 91, in <br />Hamilta~. (/961, FilJ. 3) <br /> <br /> <br />. <br /> <br />MAGNITUDE <br />o 4.5-5.9 <br />. 5.0-5.4 <br />A 5.5-5.9 <br />o 6.0-6.4 <br />. 6.5-6.9 <br />X 7.0-7.'1 <br /> <br />i \ :~(* <br />H;1f~o~~ <br /> <br />"' <br /> <br />Figure lb. Seismicity mop of Solton <br />trough ond odjocent ore os, showing <br />shocks 0/ r"ognitude 4.5 and greoter <br />that occurred between 1904 ond <br />1960. Listing prior to 1934 is very <br />incomplete. Oato frcm Gutenberg <br />and Rich ter (1954) and loco I <br />bulletins of the Posodcno Seismologicol <br />loborotory. After Biehler, Kovach, <br />and Allen (1964, Figure 2 I. <br /> <br />FIGURE 2 <br />EPICENTER MAP <br />Colorado River Basin Salinity Control Project <br />Title I Division, Desalting Complex Unit, Arizona <br /> <br />. <br />