Mass movement

          Mass movement are movements of masses of bodies of soil, bed rock, rock debris, soil mud, which usually occur a long steep sided hills and mountains, with the primary cause the pull of gravity. This slipping of large amounts of rock and soil are seen in landslides, mud slides, and Avalanches.

San Andreas Fault Movie

   

    Los Angeles had its last major magnitude since 1680, which is 335 years. Dr. Jones is an Earthquake seismologist, her nick name is Earthquake lady. Los Angeles was built on 50s and 60s so that's why Dr. Jones worried about the old concrete buildings that have not been retrofitted and could topple, or collapse inwardly into a pancake.

Earthquake.  

Concrete buildings was existed since hundreds years ago. 

Sea Level