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• • • i t �01 r 44 r N • ^ z . Y i < • w � w 2 , SanitaLa ry 11 - ;h , r • 1 c. yr „ x i• . r ti 1 - sig .< . X t S CL _. ► E 14 APPROXIMATE SCALE. 1 inci'12 miles 6 12 24 w :• { % - (1 750.000) 'r - COUNTY OF SAN JOAQUIN SCALE SHOWN Pink band added to emphasize location of historic fault displacement. ADDITIONAL FAULT SYMBOLS _ _ _ __ U = Upthrown side (relative or apparent) D = Downthrown side (relative or apparent) �-- _ _ _ __ Bar and ball on downthrown side (used where space is limited). Arrows along fault indicate relative or apparent direction of lateral movement. Arrow on fault indicates direction of dip. Low angle fault (barbs on upper plate). Fault surface generally dips less than 45° but locally may have been subsequently steepened. On offshore faults, barbs simply indicate a reverse fault regardless of steepness of dip. FOOTHILL SANITARY LANDFILL VICINITY FAULT MAP JOINT TECHNICAL DOCUMENT FIGURE 13 Years Geologic Before Fault Recency DESCRIPTION Time Present Symbol of Scale (Approx.) Movement ON LAND OFFSHORE o Displacement during Historic time (e.g. San Andreas fault 1906). Includes areas of known fault creep. 200 Displacanent during Holocene time. Fault offsets seafloor sediments c " C -'C'' C -- or strata of I loloeene age. 0 x —10,000— Faults showing evidence of displace- Fault cuts strata of a c c`• ment during late Quaternary time. Pleistocene age. Undivided Quaternary faults - most a —700,000 faults in this category show evidence ' c of displacement during the last a, 1,600,000 years: possible Fault cuts strata of a exceptions are faults which displace Quaternary age. --�� cam- rocks of undifferentiated Plio- O Pleistocene age. y�y N 1,600,000 Faults without recognized Quater- W nary displacement or showing Fault cuts strata of evidence of no displacement during Pliocene or older age. Quaternary time. Not necessarily inactive. a Pre Quaternary faults shown in Nevada and Oregon. 4.5 billion (Age of hirth) Pink band added to emphasize location of historic fault displacement. ADDITIONAL FAULT SYMBOLS _ _ _ __ U = Upthrown side (relative or apparent) D = Downthrown side (relative or apparent) �-- _ _ _ __ Bar and ball on downthrown side (used where space is limited). Arrows along fault indicate relative or apparent direction of lateral movement. Arrow on fault indicates direction of dip. Low angle fault (barbs on upper plate). Fault surface generally dips less than 45° but locally may have been subsequently steepened. On offshore faults, barbs simply indicate a reverse fault regardless of steepness of dip. FOOTHILL SANITARY LANDFILL VICINITY FAULT MAP JOINT TECHNICAL DOCUMENT FIGURE 13