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  2. Sedimentary rock - Wikipedia

    en.wikipedia.org/wiki/Sedimentary_rock

    Sedimentary rocks are often deposited in large structures called sedimentary basins. Sedimentary rocks have also been found on Mars. The study of sedimentary rocks and rock strata provides information about the subsurface that is useful for civil engineering, for example in the construction of roads, houses, tunnels, canals or

  3. Sedimentology - Wikipedia

    en.wikipedia.org/wiki/Sedimentology

    Energy: petroleum geology relies on the capacity of sedimentary rocks to generate deposits of petroleum oils. Coal and oil shale are found in sedimentary rocks. A large proportion of the world's uranium energy resources are hosted within sedimentary successions. Groundwater: sedimentary rocks contain a large proportion of the Earth's ...

  4. List of rock types - Wikipedia

    en.wikipedia.org/wiki/List_of_rock_types

    Phosphorite – Sedimentary rock containing large amounts of phosphate minerals – A non-detrital sedimentary rock that contains high amounts of phosphate minerals; Sandstone – Type of sedimentary rock; Shale – Fine-grained, clastic sedimentary rock; Siltstone – Sedimentary rock which has a grain size in the silt range

  5. Sedimentary basin - Wikipedia

    en.wikipedia.org/wiki/Sedimentary_basin

    Sedimentary basins are of great economic importance. Almost all the world's natural gas and petroleum and all of its coal are found in sedimentary rock. Many metal ores are found in sedimentary rocks formed in particular sedimentary environments.

  6. Clastic rock - Wikipedia

    en.wikipedia.org/wiki/Clastic_rock

    Siliciclastic sedimentary rocks are composed of mainly silicate particles derived from the weathering of older rocks and pyroclastic volcanism. While grain size, clast and cementing material (matrix) composition, and texture are important factors when regarding composition, siliciclastic sedimentary rocks are classified according to grain size ...

  7. Rock (geology) - Wikipedia

    en.wikipedia.org/wiki/Rock_(geology)

    It may be limited to rocks found on Earth, or it may include planetary geology that studies the rocks of other celestial objects. Rocks are usually grouped into three main groups: igneous rocks, sedimentary rocks and metamorphic rocks. Igneous rocks are formed when magma cools in the Earth's crust, or lava cools on the ground surface or the seabed.

  8. Formation of rocks - Wikipedia

    en.wikipedia.org/wiki/Formation_of_rocks

    Metamorphic rocks once existed as igneous or sedimentary rocks, but have been subjected to varying degrees of pressure and heat within the Earth's crust. The processes involved will change the composition and fabric of the rock and their original nature is often hard to distinguish. Metamorphic rocks are typically found in areas of mountain ...

  9. Sedimentary structures - Wikipedia

    en.wikipedia.org/wiki/Sedimentary_structures

    Sedimentary structures include all kinds of features in sediments and sedimentary rocks, formed at the time of deposition. Sediments and sedimentary rocks are characterized by bedding , which occurs when layers of sediment, with different particle sizes are deposited on top of each other. [ 1 ]

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