Missinaibi Formation

The Missinaibi Formation is a Late Pleistocene geologic formation in the Hudson Bay Lowlands in Northern Ontario, Canada. ^[1] The formation lies within Missinaibi Provincial Park. ^[2]

Missinaibi Formation
Stratigraphic range: Late Pleistocene (Sangamonian) ~0.1–0.011 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Formation
Location
Coordinates	50.8°N 81.3°W / 50.8; -81.3
Approximate paleocoordinates	50.8°N 81.3°W / 50.8; -81.3
Region	Ontario
Country	Canada
Missinaibi Formation (Canada) Show map of Canada Missinaibi Formation (Ontario) Show map of Ontario

It was first identified by geologists in the late 19th century. ^[3] The Missinaibi Formation is principally known for having nonglacial sediments, which means that dating the formation has helped scientists track the ebb and flow of glacial activity in the region. ^{[1] [3]}

Scientists have found fish and beaver remains dating from the Sangamonian interglacial ^[4] The formation also preserves fossils of mastodon. ^[5]

In 1958, Algoma Ore Properties surveyors identified two iron ore deposits with an airborne magnetometer and staked mining claims. ^[6]

See also

• List of fossiliferous stratigraphic units in Ontario