About the Loess (1st option), FGDC 684 hatch pattern
Loess (1st option) lithology symbol, dense wavy vertical lines. FGDC geologic map lithology pattern 684, 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.