Share

First State Geology Newsletter Signup

First State Geology has been the newsletter of DGS for over 25 years.

Click here to signup!

Site content related to keyword: "groundwater monitoring"

Finding faults - Delaware Geological Survey discovers evidence of past earthquakes

Delaware Geological Survey scientists found slickensides in core samples indicating faults in northern Delaware.

Delaware Geological Survey (DGS) scientists have uncovered hard proof of faults in northern Delaware, indicating the occurrence of earthquakes millions of years ago.