Sedimentary Rocks Lab Extra Credit Question Metamorphic Rocks Lab Extra Credit Q

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Sedimentary Rocks Lab Extra Credit Question Metamorphic Rocks Lab Extra Credit Question This banded sedimentary formation found in Minnesota, the Upper Peninsula of Michigan, etc.) is a major source of iron ore. They were very common during the Precambrian. What is the name of this type of formation? Some of the oldest rocks on the planet are found near the Acasta River in the Northwest Territories of Canada. These rocks are dated to 4.04 billion years old! What type of metamorphic rock holds this title?

Explanation / Answer

This banded sedimentary formation belongs to the Banded Iron Formation(BIF) of the Precambrian age ,which is a major source of iron ore.

The metamorphic rocks dated to 4.04 billion years old is the Acasta Gneiss, which are found near the Acasta river in the Northwest territories of Canada.

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