Public opposition has been the biggest obstacle to site selection. This is as true for nuclear wastes as it has been with other waste-disposal issues. Under the site-selection procedure specified by the federal government, states have banded together in compacts for the purpose of developing regional sites. Overall, little progress has been made as the process has become entrenched in lawsuits, delays, and public opposition whenever a specific site is mentioned. Sedimentary rocks originate from sedimentary processes that have been operating throughout geologic time.
Sedimentary rocks exhibit either clastic textures or nonclastic textures.
Clastic textures are characteristic of the detrial rocks, those that have been transported to their point of deposition. The classification of the detrial rocks depends upon the size of the particles that make up the rock. Although clastic textures may also be present in the chemical and bio-chemical sedimentary rocks, many of these rocks are composed of grains that have chemically precipitated at the site of deposition. Non clastic textures, characterized by interlocking grain networks, result from this process.