Their surface composition is similar to carbonaceous chondrite meteorites. Some meteorites, such as carbonaceous chondrites, contain carbonaceous material. Within sedimentary rocks composed of carbonaceous sediment, there may also be evaporite minerals. Micro- and nanoscale water occurs as fluid inclusions in both carbonaceous and ordinary chondrites. Alkanes have also been detected in meteorites such as carbonaceous chondrites. The area consists of patchy sedimentary rock composed of pebble bed, sandstone, and carbonaceous shales. It has also been identified as presolar grains in carbonaceous chondrite meteorites. Infrared spectra show that it has carbon-rich material found in carbonaceous chondrites. Bitumen is similar to the organic matter in carbonaceous meteorites. The meteorite belongs to the CM group of carbonaceous chondrites. However, no hydrated minerals were detected, suggesting no link with carbonaceous chondrites. Its spectral characteristics suggest a composition similar to that of a water-rich carbonaceous chondrite. Calcium carbonate is used by living organisms to manufacture carbonaceous tests and shells. Dating a specific sample of fossilized carbonaceous material is more complicated. The uranium is especially concentrated along thin carbonaceous seams or carbon leaders.