About the Argillaceous or shaly sandstone, FGDC 612 hatch pattern
Argillaceous or shaly sandstone: fine dots with scattered horizontal dashes. FGDC geologic map lithology pattern 612. Redrawn from the USGS chart.
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.