About the Loess (3rd option), FGDC 686 hatch pattern
Loess (3rd option) lithology symbol, wavy vertical lines with dashed horizontal bands. FGDC geologic map lithology pattern 686, for map and section drawings.
Kind: a repeated motif that does not fill the plane.
The download is one AutoCAD .pat file. Downloads are metered; a Hatchy Pro license lifts the limit.