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Barreirinha Formation

Coordinates: 4°06′S 58°00′W / 4.1°S 58.0°W / -4.1; -58.0
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Barreirinha Formation
Stratigraphic range: late Frasnian
~380–376 Ma
Late Devonian paleogeography (380 Ma)
TypeGeological formation
Lithology
PrimaryBlack shale
OtherSandstone, pyrite
Location
Coordinates4°06′S 58°00′W / 4.1°S 58.0°W / -4.1; -58.0
Approximate paleocoordinates64°18′S 36°24′W / 64.3°S 36.4°W / -64.3; -36.4
RegionAmazonas
Country Brazil
ExtentAmazon Basin
Type section
Named forBarreirinha
Barreirinha Formation is located in Brazil
Barreirinha Formation
Barreirinha Formation (Brazil)

The Barreirinha Formation is a late Frasnian geologic formation of the Amazon Basin in the state of Amazonas of northern Brazil. The group comprises deep marine black shales and sandstones.[1]

Fossil content

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The formation has provided conodont fossils of:[1][2]

References

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  1. ^ a b Barreirinha Formation at Fossilworks.org
  2. ^ Cardoso, 2015

Bibliography

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  • Cardoso, C. N.; Sanz López, J.; Blanco Ferrera, S.; Lemos, V. B.; Scomazzon, A. K. (2015), "Frasnian conodonts at high palaeolatitude (Amazonas Basin, north Brazil)", Palaeogeography, Palaeoclimatology, Palaeoecology, 418: 57–64, Bibcode:2015PPP...418...57C, doi:10.1016/j.palaeo.2014.11.007