San Pablo Bay graphics
![Seismic-reflection profile shows sediment layers beneath a bay, and map shows variations in gravity under the bay.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/Ro_GravMapPlusOct16.jpg?itok=CbrgG6KU)
Detailed Description
Above, left: Seismic-reflection profile created by bouncing sound waves off sediment layers beneath San Pablo Bay. Note deformation of layers by Hayward fault (black arrow). Above, right: Variations in gravity caused by differences in rock density under the bay. Sharp change in gravity values (dashed white line) lies close to sites where seismic-reflection profiles imaged the Hayward fault (plus signs).
Sources/Usage
Public Domain.