Acacus Sandstone Explained

Acacus Sandstone
Type:	Formation
Age:	Llandovery ~
Period:	Llandovery
Prilithology:	Sandstone
Otherlithology:	Shale
Region:	Ghat District
Country:	Libya
Coordinates:	25°N 10.2°W
Paleocoordinates:	-77.5°N 116.9°W
Extent:	Libyan Desert

The Acacus Sandstone is a geologic formation in the Ghat District, southwestern Libya. The unit preserves fossils dating back to the Llandovery epoch of the early Silurian period.^[1]

Fossil content

The formation has provided the following fossils:^{[1] [2]}

Trilobites

• Trilobita indet.

Eurypterids

• Carcinosoma sp.
• Pterygotus sp.

Invertebrates

• Mollusca indet.

Ichnofossils

• Arthrophycus sp.
• Cruziana sp.
• Cubichnia sp.
• Dimorphichnus sp.
• Paleophycus sp.
• Pelecypodichnus sp.
• Rusophycus sp.

See also

• Fish Bed Formation, Silurian fossiliferous formations of Scotland
• Lipeón Formation, Silurian fossiliferous unit of Bolivia
• Soom Shale, Late Ordovician Lagerstätte of South Africa
• Bertie Formation, Silurian Lagerstätte of Ontario and New York
• Andean-Saharan glaciation

References

Bibliography

Notes and References

1. http://www.fossilworks.org/cgi-bin/bridge.pl?action=displayStrata&geological_group=&formation=Acacus%20Sandstone&group_formation_member=Acacus%20Sandstone Acacus Sandstone
2. Plotnick, 1999