Pavy Formation Explained

Pavy Formation
Type:Formation
Age:Thanetian
Period:Thanetian
Prilithology:Siltstone
Otherlithology:Coal
Namedfor:Pavy River
Region:Ellesmere Island, Nunavut
Coordinates:81.7°N -64.4°W
Paleocoordinates:74.3°N -13.3°W
Extent:Sverdrup Basin

The Pavy Formation is a geologic formation in Nunavut. It preserves fossil insects of Carabites feildenianus,[1] dating back to the Thanetian stage of the Paleocene period.

Description

The Pavy Formation is interpreted to be fluvial in origin. Trough-crossbedded sandstone facies dominate this formation and were probably channel deposits of a braided river system, with interbeds of siltstone and mudrock representing floodplain deposits. Where thicker intervals of mudrock occur, backswamp ponds or shallow-lake conditions were probably present. Only at Watercourse Valley and Pavy River did conditions stabilize long enough for swamps to develop, producing thick coal beds.

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Bibliography

Notes and References

  1. Heer, 1878