Allenby Formation

Allenby Formation
Stratigraphic range: 52.5–48 Ma
↓
Type Geological formation
Sub-units Princeton Chert
Area 300 km².[1]
Thickness 1860-2100 m.[1]
Lithology
Primary Fluvial deposits
Other shale–sandstone, coal–breccia, and coal–chert
Location
Coordinates 49°22.6′N 120°32.8′W / 49.3767°N 120.5467°W / 49.3767; -120.5467Coordinates: 49°22.6′N 120°32.8′W / 49.3767°N 120.5467°W / 49.3767; -120.5467
Region British Columbia
Country Canada
Type section
Named for Allenby, British Columbia (Shaw, 1952)

The Allenby formation is a sedimentary rock formation deposited during the early to early Middle Eocene. It consists of conglomerates, sandstones with interbedded with shales and coal. The coal seams contain an abundance of insect, fish and plant fossils, particularly in the Princeton Chert.[1]

The following fossil genera and species have been described from the Allenby formation:

Orontium wolfei is one example of many fossils that can be found in the Allenby formation.

References

  1. 1 2 3 Mustoe, G.E. (1 January 2011). "Cyclic sedimentation in the Eocene Allenby Formation of south-central British Columbia and the origin of the Princeton Chert fossil beds". Canadian Journal of Earth Sciences. 48 (1): 25–43. doi:10.1139/E10-085.
  2. ↑ Wolfe, J.A.; Wehr, W.C. (1988). "Rosaceous Chamaebatiaria-like foliage from the Paleogene of western North America". Aliso. 12 (1): 177–200.
  3. ↑ Denk, T.; Dillhoff, R.M. (2005). "Ulmus leaves and fruits from the Early-Middle Eocene of northwestern North America: systematics and implications for character evolution within Ulmaceae" (PDF). Canadian Journal of Botany. 83 (12): 1663–1681. doi:10.1139/b05-122.
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