About the Cherty crossbedded limestone, FGDC 633 hatch pattern
Cherty crossbedded limestone: curved crossbedded courses with small ovals. FGDC geologic map lithology pattern 633. 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.