Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g., kaolin, Al 2 Si 2 O 5 (OH) 4) and tiny …

Although shale’s bulk composition is clastic, the inclusion of other materials often leads to confusion about its classification. Shale frequently contains organic matter, which is the …

Shales characteristically consist of at least 30 percent clay minerals and substantial amounts of quartz. They also contain smaller quantities of carbonates, feldspars, iron oxides, fossils, and …

Shale primarily composed of clay minerals, along with minor constituents like quartz and calcite. Shale is the most common sedimentary rock type, constituting approximately 70% of exposed …

Oct 28, 2015 · Shale is so widespread because its main constituents (clay minerals) are very common at the surface. These minerals form as a result of chemical weathering — …

May 9, 2019 · Shale is the rock that records whispers — the slow settling of clay-sized particles, the calm waters of ancient basins, the burial of organic matter, and the chemical evolution of …

Shale is a fine-grained clastic sedimentary rock composed of clay-sized particles. It is the most common sedimentary rock and forms from the accumulation and compaction of mud in quiet …

Yes, shale can be a biochemical sedimentary rock if it is formed from the compacted remains of plants or aquatic organisms. However, it can also be a clastic sedimentary rock if it is formed …

Shale is a sedimentary rock composed predominantly of clay-sized particles. Most of the particles are clay minerals, but other fine-grained clastic materials are normally present. Shale is …

The term shale is often used as a very general term for all kinds of clay rich sedimentary rocks.