Although most would be entranced by the glittering crystals, it was a sedimentary rock bundle called breccia that caught his eye. "I could not stop thinking about the breccia," says Tsuchiya ...

Evidence for the impact crater includes several examples of ‘shocked’ quartz grains in breccia – a sedimentary rock type with large fragments cemented into a finer-grained matrix.

Credit: Sánchez-Garrido et al 2022. Evidence for the impact crater includes several examples of ‘shocked’ quartz grains in breccia – a sedimentary rock type with large fragments cemented ...

These results from the Eclipse breccia and the adjacent Starship ... which brought Proterozoic metamorphic rocks in contact with younger sedimentary rock units to the east of Area 51.

Sedimentary rocks that are formed by wind- or waterborne ... Some look like a chunk of concrete. Others are breccia, which is stone made of rock pieces melded together. But if these pebbles ...

Breccia pipes are vertical geologic anomalies of broken sedimentary rock (breccia) and may contain a high-grade, compact form of uranium mineralization. It is of note that breccia pipes were ...