Isachsen Formation
Geologic formation in Canada
From Wikipedia, the free encyclopedia
The Isachsen Formation is a geologic formation in the Northwest Territories and Nunavut. The Formation is a Lower Cretaceous siliciclastic succession exposed in the Sverdrup Basin of the Canadian Arctic.[1]
| Isachsen Formation | |
|---|---|
| Stratigraphic range: Aptian ~ | |
| Type | Formation |
| Sub-units | Walker Island Member |
| Overlies | Christopher Formation |
| Location | |
| Coordinates | 76.1°N 109.0°W |
| Approximate paleocoordinates | 71.5°N 20.5°W |
| Region | Northwest Territories, Nunavut |
| Country | Canada |
  Isachsen Formation (Canada)  Isachsen Formation (Nunavut) | |
Dating to the Aptian stage of the Cretaceous period, the formation is characterized by diverse sedimentary deposits. It preserves fossils of Polycotylidae indet., reflecting both a fluvio-deltaic and tidally-influenced marine history.[2]
