one of the three major types or classes of rock that form the earth's crust. Sedimentary rocks form when sediments accumulate and are then consolidated. Sedimentary rocks are formed either from pieces of pre-existing rock or are precipitated chemically. Sandstone and shale are examples of sedimentary rocks formed from pieces of other rocks and evaporites and coal are examples of precipitated sedimentary rocks.
A rock resulting from the consolidation of loose sediment (solid fragmental material that originates from the weathering of rocks) that has accumulated in layers. Sedimentary rocks represent one of the three main classes of rocks, the other two being metamorphic and igneous rocks.
Rock that forms from the accumulated products of erosion and in some cases from the compacted shells, skeletons, and other remains of dead organisms. See rock cycle. Compare igneous rock, metamorphic rock.
This type of rock forms either from the deposition and consolidation of fragments of preexisting rocks or through the precipitation (either biologically-mediated or strictly chemical) of minerals from solution (in water).
Sedimentary rocks are the product of the consolidation of loose sediment that has accumulated in beds. These sediments settle gradually under the weight of overlying beds and are transformed into solid sedimentary rock by cementation.
created when small particles of Earth and decomposed plant and animal life settle at the bottom of lakes, rivers and oceans and are compressed by the weight of the water until the bottom layers slowly turn into rock. Sandstone is an example of sedimentary rock. Sedimentary rock is very soft and easily flakes off, layer by layer. That is why high salinity is associated with a sedimentary ocean floor.
Rock. Rock formed by the accumulation and materials transported by wind, water, or ice to the site of deposition (e.g., sandstone or mudstone). Also chemically precipitated materials (e.g., limestone).
Rock formed from materials deposited as sediments, in the sea, in fresh water, or on the land. The materials are transported to their site of deposition by such forces as running water, wind or moving ice. They may deposit as fragments or by precipitation from solution. Limestone and sandstone are the sedimentary rocks most used for building and gravestones.
Rock formed by accumulation and cementing of loose sediment (e.g., sandstone), the deposition of chemical compounds held in solution in water (e.g., limestone), or by the accumulation of animal or plant debris (e.g., coal).
One of the three main rock groups (along with igneous and metamorphic rocks) and is formed in three main ways - by the deposition of the weathered remains of other rocks (known as clastic sedimentary rocks); by the deposition of the results of biogenic activity; and by precipitation from solution. Sedimentary rocks include common types such as chalk, limestone, sandstone, and shale. (courtesy of wikipedia.org)
Rock formed by compression and deposition (i.e., formation of deposits) on the part of other rock and mineral particles. Sedimentary rock is one of the three major types of rock, along with igneous and metamorphic.
rocks that have been deposited as sediments in the beds of ancient seas. These sediments are laid down in distinct horizontal layers. Eventually the weight of the water compresses these sediments into fiat rock or strata.
rock formed of sediment, and specifically: (1) sandstone and shale, formed of fragments of other rock transported from their sources and deposited in water; and (2) rocks formed by or from secretions of organisms, such as most limestone. Many sedimentary rocks show distinct layering, which is the result of different types of sediment being deposited in succession.
A rock resulting from the consolidation of loose sediment that has accumulated in layers, or a chemical rock formed by precipitation or an organic rock consisting largely of remains of plants and animals.
Limestone, shale, gypsum sandstone, etc. are sedimentary rock products used in construction or building materials. This rock is formed from sand, rock fragments, shell remains and silt compressed into a solid mass over a period of time. The absence of faults or cracks makes the strength constant throughout the entire piece.
One of the three major types of rock, along with igneous and metamorphic rock. Sedimentary rock usually is formed by the deposition, compaction, and cementation of rock that has experienced weathering. It also may be formed as a result of chemical precipitation.