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 fragments (silt -sized …

Shale is a fine-grained sedimentary rock that forms from the compaction of silt and clay-size mineral particles that we commonly call "mud." This composition places shale in a category of sedimentary …

Jan 16, 2026 · Shale is Earth’s most abundant sedimentary rock. Learn its formation, composition, properties, varieties, fossils, and global geological importance.

Shale, any of a group of fine-grained, laminated sedimentary rocks consisting of silt- and clay-sized particles. Shale is the most abundant of the sedimentary rocks, accounting for roughly 70 percent of …

Shale is the most common sedimentary rock type, constituting approximately 70% of exposed sedimentary rock on Earth. Shale is characterized by its laminated structure, with thin, parallel layers …

Shale is one of the most common types of sedimentary rock primarily composed of clay and silt particles. It forms through the compaction of these fine particles over millions of years in calm …

Shale is a fine-grained sedimentary rock composed primarily of clay minerals and other clay-sized particles of minerals like quartz and calcite. It is laminated and fissile, easily breaking along bedding …

Aug 2, 2020 · Shale is the most common sedimentary rock, accounting for about 70 percent of the rock found in the Earth's crust. It is a fine-grained clastic sedimentary rock made of compacted mud …

Jan 8, 2024 · Shale is a fine-grained sedimentary rock, composed mostly of clay particles and other minerals such as quartz and calcite. It is formed of many thim mineral layers and is typically …

Oct 28, 2015 · Explore the structure and origin of shale. Learn how it's formed from clay and silt and its role in Earth's sedimentary layers.