Campur Formation
Geologic formation in Guatemala
From Wikipedia, the free encyclopedia
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]
| Campur Formation | |
|---|---|
| Stratigraphic range: Turonian-Maastrichtian | |
| Type | Formation |
| Underlies | Petén Group: Sepur Formation |
| Overlies | Cobán Formation |
| Lithology | |
| Primary | Limestone |
| Other | Dolomite, conglomerate, siltstone |
| Location | |
| Coordinates | 16.0°N 90.5°W |
| Approximate paleocoordinates | 24.2°N 80.1°W |
| Region | Alta Verapaz, Petén |
| Country | Guatemala |
| Extent | Petén Basin |
| Type section | |
| Named for | Campur |
| Named by | Vinson |
| Year defined | 1962 |
  Campur Formation (Guatemala) | |
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]