iMEMDIRSCALACAD.5ci.VDL.rn. 



[Arnold] Plate HIX 



Figure a. Long Beach. — Bluff at Alamitos Beach, looking east, showing horizontal upper San Pedro 

 (Pleistocene) strata. Photogranh by R. Arnold. 



Figure b. Long Beach, — Typical section of the upper San Pedro (Pleistocene) bluff east of Long 

 Beach. (Lowest visible layer composed of fossM shells). Photograph by R. Arnold, 



