Spatial Extent and Structures

A Geologic map of the area by Bateman 1992, shows the region to have predominately NW trending structural features.

This map depicts the observed active seismicity 1978 to 1999 and the inferred NNE lineaments, the caldera rim and the Hilton Creek Fault.



Lineations in aerial photography indicate 2 observable NNE trending structural features.
Click on picture to enlarge.

Cross Sections

Cross sections through Hilton Block seismic data reveal complex structural relationships.