Appekunny Formation

Appekunny Formation is a thick series of rock strata located in the Lewis Range within Glacier National Park. The formation is primarily mudstone and siltstone deposited in a shallow sea during the Proterozoic. The Appekunny Formation contains bedding structures which may include the remains of the oldest metazoan (animal) on Earth.

The Appekunny Formation is named after Appekunny Mountain and averages 1,970 feet (601 m) thick. The rock strata have been dated at between 1.2–1.4 billion years old.

External links

* cite book
first=Omar
last=Raup
coauthors=Robert L. Earhart, James W. Whipple, Paul E. Carrara
title=Geology Along Going-to-the-Sun Road, Glacier National Park, Montana
publisher=Glacier Natural History Association
location=West Glacier, Montana
year=1983
editor=
id=ISBN 0-934318-11-5
* cite web
last = National Park Service
first =
authorlink =
coauthors =
year =
url = http://www2.nature.nps.gov/geology/parks/glac/index.cfm
title = Park Geology
format =
work = Geology Fieldnotes
publisher =
accessdate = 2006-04-29
accessyear =
* cite web
last = Price
first = Mike
authorlink =
coauthors =
date = January - March 2006
url = http://www.esri.com/news/arcuser/0206/files/virtual.pdf
title = Virtual Geomorphology
format = pdf
work =
publisher =
accessdate = 2006-04-29
accessyear =