a sedimentary rock composed of layers of claylike fine-grained sediments - BACK>>
Sedimentary rock derived from mud Commonly finely laminated (bedded) Particles in shale are commonly clay minerals mixed with tiny grains of quartz eroded from pre-existing rocks Shaley means like a shale or having some shale component, as in shaley sandstone
A sedimentary rock composed of particles smaller than sand, such as clay and mud
A compacted sedimentary rock composed of detrital grains of clay and silt, finer than sandstone Because they are tightly compacted and have virtually no permeability, shales may act as seals to prevent the migration, and permit the entrapment of, hydrocarbons
Rock that is often impervious to water (will not allow water to move through it) but rather soft, brittle, and easily eroded Shale is the result of compaction of silt or mud Much of the Permian and Pennsylvanian strata in Kansas consists of various shales, often brightly colored
A fine-grained detrital sedimentary rock, formed by the consolidation, especially compression of clay, silt or mud
A sedimentary rock composed of detrital sediment particles less than 0 004 millimeter in diameter Shales tend to be red, brown, black, or gray, and usually originate in relatively still waters
Sedimentary rock composed of clay, mud, and silt grains which easily splits into layers
A fine- grained sedimentary rock of a thin, laminated, and often friable, structure
A fine-grained sedimentary rock, formed by the consolidation of clay, silt, or mud It is characterized by finely laminated structure and is sufficiently indurated so that it will not fall apart on wetting