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  1. Classification based on origin

    Sedimentary rocks can be subdivided into four groups based on the processes responsible for their formation: clastic s… 展开

    Sedimentary rock - Wikipedia

    • Sedimentary rocks are types of rock that are formed by the accumulation or deposition of mineral or organic particles at Earth's surface, followed by cementation. Sedimentation is the collective name for processes that cause these particles to settle in place. The particles that form a sedimentary rock are called sediment, and may be composed of geological … 展开

    Classification based on composition

    Alternatively, sedimentary rocks can be subdivided into compositional groups based on their mineralogy:
    Siliciclastic sedimentary rocks, are dominantly composed of silicate minerals. The sediment th… 展开

    Deposition and transformation

    Sedimentary rocks are formed when sediment is deposited out of air, ice, wind, gravity, or water flows carrying the particles in suspension. This sediment is often formed when weathering and erosion break down a rock into … 展开

    Properties

    The color of a sedimentary rock is often mostly determined by iron, an element with two major oxides: iron(II) oxide and iron(III) oxide. Iron(II) oxide (FeO) only forms under low oxygen (anoxic) circumstances and gives the rock a … 展开

    Depositional environments

    The setting in which a sedimentary rock forms is called the depositional environment. Every environment has a characteristic combination of geologic processes, and circumstances. The type of sediment that is deposited is not … 展开

    Sedimentary basins

    Places where large-scale sedimentation takes place are called sedimentary basins. The amount of sediment that can be deposited in a basin depends on the depth of the basin, the so-called accommodation space. … 展开

    Sedimentation rates

    The rate at which sediment is deposited differs depending on the location. A channel in a tidal flat can see the deposition of a few metres of sediment in one day, while on the deep ocean floor each year only a few millim… 展开

     
  1. 沉积岩 - 维基百科,自由的百科全书

  2. 沉積岩 - 維基百科,自由的百科全書 - zh.wikipedia.org

  3. Sedimentology - Wikipedia

    Sedimentary rock types. Middle Triassic marginal marine sequence of siltstones and sandstones, southwestern Utah. There are four primary types of sedimentary rocks: clastics, carbonates, evaporites, and chemical. Clastic rocks are …

  4. Sedimentary rock | Definition, Formation, Examples,

    Sedimentary rock, rock formed at or near Earth’s surface by the accumulation and lithification of sediment or by the precipitation from solution at normal surface temperatures. Sedimentary rocks are the most common rocks exposed on …

  5. Sedimentary rock - Simple English Wikipedia, the free encyclopedia

  6. Clastic rock - Wikipedia

    Clastic sedimentary rocks are rocks composed predominantly of broken pieces or clasts of older weathered and eroded rocks. Clastic sediments or sedimentary rocks are classified based on grain size, clast and cementing material …

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