Usage examples (9)

• They went single file, stopping once to clear a rockfall, pitching splintered chunks of shale and hornfels into the groan - ing trench to their right.
• The bottom of DDH 152 ended in hornfels andesitic tuff / flow with increased copper.
• -- TB High Grade Zone - 500 metre of anomalous hornfels zone with drill results including:
• When plate tectonic activity formed the Rocky Mountains, the hornfels lifted up along with the shale that surrounded it.