For enlargement, click on image, except on cross-section numbers.

Click on cross-section number to view image of that cross section.

Figure 4. Index map of cross sections.  Oil fields are Chino-Soquel (CS), Brea-Olinda (BO), East Coyote (EC), East Los Angeles (ELA), Esperanza (E), Kraemer (Kr), Mahala (Ma), Montebello (Mo), North Whittier Heights (NWH), Olive (O), Richfield (RI), Rideout Heights (RO), Sansinena (Sa), Santa Fe Springs (SF), Turnbull (T), West Coyote (WC), Whittier (W) and Yorba Linda  (YL). Numbers accompanying cross section lines are figure numbers.