Windermere group
Encyclopedia
In North America, the Windermere Group of rocks is a Neoproterozoic
suite of clastics and volcanics up to 8,000 meters thick in western Montana
, Idaho
, and British Columbia
. http://pubs.usgs.gov/mf/2003/2426/bferry_met.txt
Neoproterozoic
The Neoproterozoic Era is the unit of geologic time from 1,000 to 542.0 ± 1.0 million years ago. The terminal Era of the formal Proterozoic Eon , it is further subdivided into the Tonian, Cryogenian, and Ediacaran Periods...
suite of clastics and volcanics up to 8,000 meters thick in western Montana
Montana
Montana is a state in the Western United States. The western third of Montana contains numerous mountain ranges. Smaller, "island ranges" are found in the central third of the state, for a total of 77 named ranges of the Rocky Mountains. This geographical fact is reflected in the state's name,...
, Idaho
Idaho
Idaho is a state in the Rocky Mountain area of the United States. The state's largest city and capital is Boise. Residents are called "Idahoans". Idaho was admitted to the Union on July 3, 1890, as the 43rd state....
, and British Columbia
British Columbia
British Columbia is the westernmost of Canada's provinces and is known for its natural beauty, as reflected in its Latin motto, Splendor sine occasu . Its name was chosen by Queen Victoria in 1858...
. http://pubs.usgs.gov/mf/2003/2426/bferry_met.txt