Beautiful metamorphic gneiss, 400 million years old, and it came from Northern Europe. (upbeat music) (upbeat music) Full day of hiking today, Yellow Aster Butte Hiking Trail and Mount Baker volcano.

Gneiss is a metamorphic rock composed of bands and lenses of various minerals, according to Geology.com. "Our candidates for the oldest U.S. rock are ancient gneisses with complex histories.

Gneiss is a metamorphic rock composed of bands and lenses of various minerals, according to Geology.com. "Our candidates for the oldest U.S. rock are ancient gneisses with complex histories.

What they were after was a type of metamorphic rock called gneiss (pronounced “nice”). It forms when igneous rocks like granite undergo intense heat and pressure, changing their structure and ...

Pyrope-quartzite of Dora-Maira. This rock is called also whiteschist, as it appears as large white lenses interbedded in more common gneiss, only to be found in the Dora-Maira-Massif, Western Alps.

Rumbling Bald Mountain features cliffs of metamorphic gneiss rock with beautiful marbled faces and exceptional botanical diversity. Located 30 miles east of Asheville in Chimney Rock State Park ...

The Rock Cycle is Earth's great recycling process where igneous, metamorphic, and sedimentary rocks can all be derived from and form one another. Analogous to recycling a Coke can, where an old ...

Plant communities with exceptional floral concentrations might trace their origins to geologic episodes occurring more than 250,000,000 years ago.