Lipeón Formation

The Lipeón Formation is a Telychian to Pridoli geologic formation of southern Bolivia and northwestern Argentina. The formation comprises sandstones and siltstones. Plant fossils comprising rhyniophytes (specifically Aberlemnia, Steganotheca, Tarrantia, Hostinella and Cooksonia) are scattered throughout, with some abundant concentrations on micaceous bedding plains. The fossil flora is the oldest of South America.[1][2] Also present were quite diverse small, irregularly branching fragments possibly the tips of algae such as Buthotrephis or Hungerfordia.[3]

Lipeón Formation
Stratigraphic range: Homerian
~426–423 Ma
↓
TypeGeological formation
UnderliesBaritú Formation
Lithology
PrimarySandstone
OtherSiltstone
Location
Coordinates17.8°S 64.8°W / -17.8; -64.8
Approximate paleocoordinates52.8°S 121.7°W / -52.8; -121.7
RegionTarija Department
Jujuy Province
Country Bolivia
 Argentina
ExtentOriental
Lipeón Formation (Bolivia)

Correlations
Early Silurian (440 Ma)
Early Devonian (400 Ma)

The Lipeón Formation is laterally equivalent to the Kirusillas Formation.[4][5][6] The formation is a potential source rock for shale oil and shale gas.[7]

Fossil content

The formation has provided the following fossils:

Flora
gollark: Probably. They could be really light and small, or only use the sail to very slightly supplement the ion drive occasionally. Or just be very slow.
gollark: Maybe the sail bit could also be switchable in little bits instead of the whole thing at once, for very limited steering and communication.
gollark: Maybe space *bees* use solar sail propulsion, laser propulsion or ion engines depending on circumstance (the sail bit is switchable between reflective and photovoltaic somehow), and space *moths* use the thermal thing.
gollark: I see.
gollark: Ion drives with solar power?

See also

References
  1. Jarcas stream, Negra Muerta, Sella Valley, Tarija at Fossilworks.org
  2. Padcaya, Tarija at Fossilworks.org
  3. Edwards et al., 2015, pp.16-17
  4. Veizaga Saavedra et al., 2014, p.96
  5. Pojo at Fossilworks.org
  6. Hacienda de Tapacari, 10 km from Huari, 120 km S of Oruro at Fossilworks.org
  7. Veizaga Saavedra et al., 2014, p.99
  8. Kjellesvig-Waering, 1973

Bibliography

Further reading
  • R. E. Plotnick. 1999. Habitat of Llandoverian-Lochkovian eurypterids. In A. J. Boucot, J. D. Lawson (eds.), Paleocommunities - a case study from the Silurian and Lower Devonian 106-136
  • B. Petriella and R. Suarez Soruco. 1989. Presencia de plantas terrestres, probablemente vosculares, en las formaciones Kirusillas y Tarabuco (Lampayano-Silurico Superior) de Bolivia. Revista Tecnica de YPFB 10:119-121
  • C. J. Fischer. 1969. Deux bellerophontacées nouveaux de Bolive. Bulletin de Societé géologique, France 7:605-608
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