When rocks are compressed, they deform by bending and folding. When a conglomerate, a rock composed of pebbles surrounded by sand or silt is subjected to high temperature and pressure, the pebbles within it are deformed in different ways. They can be flattened, rotated, and even squeezed into long, thin lines.
Topic: Earth Science
Subtopic: Earth Formation/Evolution
Keywords: Rock deformation, Rocks, Conglomerate
These rocks were originally deposited in a stream as layers of rounded pebbles.