Seca_Formation,_Ecuador

Seca Formation, Ecuador

Seca Formation, Ecuador

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For other uses, see Seca Formation.

The Seca Formation is a Late Eocene (Divisaderan to Tinguirirican in the SALMA classification) geologic formation of the Progreso Basin in southwestern Ecuador. The shales of the formation have provided fossils of the marine snake Pterosphenus sheppardi.[1]

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Description

The Seca Formation, part of the Ancón Group, conformably overlies the Socorro Formation and is overlain by the Punta Ancón Formation. The Seca Formation comprises grey to greenish shales deposited in a marine platform with submarine fans environment.[2] The formation is a reservoir rock,[3] and potential source rock,[4] in the oil-rich Progreso Basin.

See also

References

  1. [1]
    Ancón at Fossilworks.org
  2. [2]
    Lorenzo et al., 2018, p.34
  3. [3]
    Lorenzo et al., 2018, p.32
  4. [4]
    Lorenzo et al., 2018, p.31

Bibliography

Further reading

  • R. Hoffstetter. 1958. Un serpent marin du genre Pterosphenus (Pt. Sheppardi nov. sp.) dans L’Éocène supérieur de L’Équateur (Amérique de Sud). Bulletin de la Société Géologique de France 6:45-50
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