Wikimedi'Òc

Sandstone homoaxial cement.jpg - Woudloper

Rockwell Formation Sideling Hill.jpg - BotMultichillT

Roundtop Hill outcrop2.jpg - BotMultichillT

Conococheague1.jpg - BotMultichillT

The Stratigraphy of the Potomac Group in Maryland.pdf - Abyssal

Metabasalt (Greenstone). The Catoctin Formation in the area around Blue Ridge Summit Overlook, Hog Rock Overlook and Cunningham (530fe4a0-1dd8-b71c-0797-f676e0401a39).jpg - BMacZeroBot

Metaconglomerate. You'll find the Weverton Formation in the area that includes Thurmont Vista, Wolf Rock, Chimney Rock, and (54c704e3-1dd8-b71c-07b1-4ed9002b0875).jpg - BMacZeroBot

Metagraywacke. The Harpers Formation is on the far southeastern corner of the park around the Lewis property and it contains (551cf635-1dd8-b71c-07e6-8f8b359764bc).jpg - BMacZeroBot

Metarhyolite. The Catoctin Formation on the far western part of the park that includes Owens Creek Campground contains (5547dbfd-1dd8-b71c-07bd-da4eacb28234).jpg - BMacZeroBot

Metabasalt (Greenstone) can be found in the Catoctin Formation in the area around Blue Ridge Summit Overlook, Hog Rock Overlook (57600386-1dd8-b71c-0733-3018723b0398).jpg - BMacZeroBot

Metaconglomerate can be found in the Weverton Formation in the area that includes Thurmont Vista, Wolf Rock, Chimney Rock, and (57a35a7a-1dd8-b71c-0754-7f3921f1696a).jpg - BMacZeroBot

Metagraywacke can be found in the Harpers Formation on the far southeastern corner of the park around the Lewis property, the (57c4e1e2-1dd8-b71c-07c3-6837ce6fa805).jpg - BMacZeroBot

Metarhyolite can be found in the Catoctin Formation on the far western part of the park that includes Owens Creek Campground (57d843fb-1dd8-b71c-0721-fe45b4e9b911).jpg - BMacZeroBot

Quartzite can be found in the Harpers Formation on the far southeastern corner of the park around the Lewis property and in the (57ec002e-1dd8-b71c-0702-38ddac0df586).jpg - BMacZeroBot