Iron oxide minerals are found in rocks around the globe. Some are magnetic, and some of them rust—especially when exposed to ...

Over time, the layers are compressed and glued together.Metamorphic rocks are ... of all the different processes of the rock cycle. These include weathering, erosion, transportation and sedimentation.

Researchers think this occurred over the past 10,000 to 15,000 years, after glaciers retreated from the region and exposed its stone to weathering ... which is a metamorphic rock, under high ...