ⓘ Trout River Formation. The Trout River Formation is a stratigraphical unit of Late Devonian age in the Western Canadian Sedimentary Basin. It takes the name fro ..

                                     

ⓘ Trout River Formation

The Trout River Formation is a stratigraphical unit of Late Devonian age in the Western Canadian Sedimentary Basin.

It takes the name from the Trout River, and was first described on the banks of the river, 35 kilometres 22 mi upstream from the Mackenzie River, by C.H. Crickmay in 1953.

                                     

1. Lithology

The Trout River Formation is composed bedded limestone top, silty limestone and shale middle, silty limestone and calcareous siltstone base.

Brachiopod and coral paleo-fauna can be found in outcrops.

                                     

2. Distribution

The Trout River Formation reaches a maximum thickness of 91 metres 300 ft. It occurs in the District of Mackenzie in outcrop and dips south into the Fort Nelson area in north-eastern British Columbia.

                                     

3. Relationship to other units

The Trout River Formation is conformably overlain by the Tetcho Formation and disconformably overlays the Kakisa Formation. In its western extent, it overlies and grades into the Fort Simpson Formation.

It is equivalent to the Sassenach Formation in the central Alberta Rockies, with the Graminia Formation in central Alberta, the Crowfoot Formation in southern Alberta, the Torquay Formation in Saskatchewan and Lyleton Formation in Manitoba.

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