Talkeetna Formation

Talkeetna Formation
Stratigraphic range: Sinemurian-Toarcian ~199–175  Ma PreꞒ Ꞓ O S D C P T J K Pg N
Map of the region around Mount Redoubt; Jtk is the Talkeetna Formation (around the estuary of the Drift River)
Type	Formation
Lithology
Primary	Sandstone
Other	Siltstone
Location
Coordinates	57°42′N155°24′W / 57.7°N 155.4°W / 57.7; -155.4
Approximate paleocoordinates	10°48′N82°18′W / 10.8°N 82.3°W / 10.8; -82.3
Region	Alaska
Country	United States
Type section
Named for	Talkeetna Mountains

The Talkeetna Formation is a geologic formation in Alaska. It preserves fossils dating back to the Early Jurassic period. ^[1]

See also

• List of fossiliferous stratigraphic units in Alaska
• Paleontology in Alaska
• Kingak Shale
• Posidonia Shale

References

1. Talkeetna Formation at Fossilworks.org

Further reading

• A. H. Caruthers and P. L. Smith. 2012. Pliensbachian ammonoids from the Talkeetna Mountains (Peninsular Terrane) of Southern Alaska. Revue de Paléobiologie, Genève, vol. spéc 11:365-378
• M. R. Sandy and R. B. Blodgett. 2000. Early Jurassic spiriferid brachiopods from Alaska and their paleogeographic significance. PaleoBios 33(3):319-328
• J. Pálfy, P. L. Smith, J.K. Mortensen and R.M. Friedman. 1999. Integrated ammonite biochronology and U-Pb geochronometry from a basal Jurassic section in Alaska. Geological Society America Bulletin 111(10):1537-1549
• G. K. Jakobs. 1997. Toarcian (Early Jurassic) ammonoids from western North America. Geological Survey of Canada, Bulletin 428:1-137