what rocks are best for radioactive dating
{"Image DocumentName": "Sedimentary rock characteristics Breccia: clastic", "Image ImageDescription": "Often have layers. Often contain fossils. Not very strong. Can determine relative age by location. Top layers are younger. Absolute age cannot be determined.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}