Loudoun Geologic Surficial
<div><a href='https://logis.loudoun.gov/metadata/Geologic%20surficial.htm' target='_blank'>More Metadata</a><br /></div>&quot;Surficial&quot; is one of four layers which collectively describe the subsurface geologic formation, structural geology and surficial deposits. &quot;Surficial&quot; is the mapping overlying …