The end result was the striped and banded rock - visible in many parts of the canyon today - called gneiss. 12 to 5 million years ago Rocks in the area, which was still being pulled apart, became ...

The researchers studied the ages of comparative gneiss rocks in Michigan, Minnesota and Wyoming using newer techniques. The scientists dated the rocks using zircon , a mineral in gneiss, the GSA said.

In a recent study, geologists say Michigan is home to the oldest known rock in the nation. Watersmeet gneiss is found in Michigan's Upper Peninsula. Minnesota's Morton gneiss previously held the ...

And there is something else: Directly across the road from the Hogpen Gap turnout is a stunning sheer cliff — nearly 60 feet high in some places — of banded gneiss, a metamorphic rock that’s ...

The gneiss’s new home is in our gardens, where it forms part of a geological and botanical journey through time. Join our scientist Paul Kenrick on his journey to the Outer Hebrides to find this ...