Can geologists use radioactive dating to find the absolute ages of sedimentary layers? Explain why or why not?

Yes, cosmogenic isotopes are created when a high-energy cosmic ray interacts with the nucleus of an in situ atom. By measuring amounts of cosmogenic isotopes found in a sedimentary layer, estimating the layers' burial depth, position, and the rate aculation of sediment, one can estimate its age. There are both radioactive and stable cosmogenic isotopes, calcium, beryllium, and helium are useful. Such dating is used for exposure dating of earth surfaces, like glacially-scoured bedrock, glacial moraines, fault scarps and landslide debris.