The evolution of the southern California uplift, 1955 through 1976

Abstract

Geologic framework ______________________________ 5 Historical surface deformation _____________________ 11 Nontectonic deformation _______________________ 11 Artifically induced deformation ______________ 11 Vertical displacements associated with ground-water withdrawal and recharge. _ _ _ 12 Vertical displacements associated with oilfield and gas-field operations ____________ 13 Naturally induced deformation _______________ 14 Tectonic deformation __________________________ 14 Vertical-control data _____________________________ 14 Errors in height determinations _________________ 16 Systematic error __________________________ 16 Random error ____________________________ 18 Errors associated with continuing crustal deformation ____________________________ 19 Errors associated with imprecisely formulated orthometric corrections.___________________ 21 The reconstruction _______________________________ 24 The Ventura-Avila Beach line ___________________ 26 The Ventura-Maricopa line______________________ 33 The Los Angeles-Mojave line ____________________ 43 The Los Angeles-San Bernardino line _____________ 59 The Orange-Barstow line _______________________ 62 Beach, the 1941 Santa Barbara, the 1946 Walker Pass, the 1947 Manix, the 1948 Desert Hot Springs, and the four major 1952 Kern County shocks) occurred before the inception of the uplift in 1959 or 1960.