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I. H. KLEINFELDER &ASSOCIATES <br /> r <br /> ` accumulation of fine—grained suspended sediment. There may be a <br /> slight upward fining in �each flood basin sequence of silt—clayey <br /> sediments. Flood basin deposits seldom show horizontal bedding <br /> with textural differences. Locally, <br /> deposits may <br /> be present. Flood plain deposits windblown <br /> mi9ariddcliimate are <br /> Y negligible e <br /> i <br /> characterized b organic matter content, somewhat <br /> reddish in color due to oxidation conditions and the variable <br /> presence of caliche (CaCo3 concretions), Flood basin sediments <br /> produce elongated tabular prismatic bodies of rectangular cross <br /> section. Material contact with sandy channel sediments may be <br /> abrupt or gradational. <br /> Based on the geologic observations described on the drilling logs <br /> 4 (Appendix D) <br /> Zones IV, and v appear to be influenced <br /> primarily by a flood basin depositional. environment. <br /> 1 ; <br /> t <br /> 53-87-443 <br /> 10 - <br />