Campur Formation

Campur Formation
Stratigraphic range: Turonian-Maastrichtian
TypeFormation
UnderliesPetén Group: Sepur Formation
OverliesCobán Formation
Lithology
PrimaryLimestone
OtherDolomite, conglomerate, siltstone
Location
Coordinates16°00′N 90°30′W / 16.0°N 90.5°W / 16.0; -90.5
Approximate paleocoordinates24°12′N 80°06′W / 24.2°N 80.1°W / 24.2; -80.1
RegionAlta Verapaz, Petén
CountryGuatemala
ExtentPetén Basin
Type section
Named forCampur
Named byVinson
Year defined1962
Campur Formation is located in Guatemala
Campur Formation
Campur Formation (Guatemala)

The Campur Formation (Kca) is a geologic formation of the Petén Basin of northern Guatemala. The subtidal limestone preserves fossils dating back to the Late Cretaceous period.[1]

Description

The formation consists of fossiliferous limestones with minor levels of dolomites. The formation is rich in rudists and miliolids.[2] Breccias and clayey conglomerates, siltstones and limestones occur in the formation. The formation was probably deposited in a fore-reef environment in an open shelf system.[3] The lower boundary of the Campur Formation is transitional into the underlying Cobán Formation. The formation is overlain by the Sepur Formation of the Petén Group.[4] The Campur Formation is laterally equivalent with the upper part of the Ixcoy Formation of western Guatemala.[5]

Fossil content

The following fossils have been uncovered from the formation:[6][7]

  • Accordiella cf. conica
  • Bournonia cardenasensis, B. excavata[8]
  • Distefanella lombricalis[9]
  • Senalveolina aubouini
  • Sulcoperculina sp.

See also

References

  1. ^ Campur Formation at Fossilworks.org
  2. ^ Machorro Sagastume, 2005, p.11
  3. ^ Scott, 1995, p.297
  4. ^ Cuenca Petén - MEM
  5. ^ Machorro Sagastume, 2005, p.9
  6. ^ El Ceibo at Fossilworks.org
  7. ^ Rubelsanto at Fossilworks.org
  8. ^ Scott, 1995, p.303
  9. ^ Scott, 1995, p.304

Bibliography

  • Machorro Sagastume, Rudy (2005), Evaluación hidrogeológica de Alta Verapaz (PDF), Universidad de San Carlos de Guatemala, pp. 1–77, retrieved 2019-02-05
  • Scott, R.W. (1995), "Cretaceous rudists of Guatemala" (PDF), Revista Mexicana de Ciencias Geológicas, 12: 294–306, retrieved 2019-02-05