MICHAEL SZOENYI / SCIENCE PHOTO LIBRARY MICHAEL SZOENYI / SCIENCE PHOTO LIBRARY
Serpentinite sample. Serpentinite is a rock formed by hydration and metamorphic processes acting on the mineral serpentine. Its presence allows geologists to determine the pressures and temperatures present during the formation of mountains, in this case the Alps. This sample is from Zermatt, Valais, Switzerland.
Model release not required. Property release not required.