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.�a <br /> E <br /> 71 <br /> .'hf jy y <br /> 46 <br /> } <br /> 9 <br /> x <br /> Map Base:United States Geological Suvey Open File Report OFR 79-664. <br /> SURFICIAL GEOLOGIC MAP <br /> .. PORTION OF BELLOTA 15 MINUTE QUADRANGLE <br /> SAN JOAQUIN COUNTY, CA <br /> — <br /> — Explanation: <br /> Qha- Holocene alluvium, channel and levee deposits. Scale: 1 in. = 5,080 ft. <br /> _ Modesto Fm. Upper Member <br /> Qm2- Arkosic alluvium, chiefly sand with minor gravel and silt, <br /> probably glacial outwash. Neil O.Anderson BAssoc..Inc. <br /> Qm2f- Foothill-derived alluvial silt, clay, and minor sand. <br /> Qm2fb- Foothill-derived basin and interdistributary overbank deposits <br /> chiefly clay and silt. <br /> Modesto Fm. Lower Member Plate 6 <br /> Qmt- Arkosic alluvium forming river terraces and alluvial fans, chiefly sand. <br />