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  2. Rock cycle - Wikipedia

    en.wikipedia.org/wiki/Rock_cycle

    This diamond is a mineral from within an igneous or metamorphic rock that formed at high temperature and pressure. The rock cycle is a basic concept in geology that describes transitions through geologic time among the three main rock types: sedimentary, metamorphic, and igneous.

  3. Original - The rock cycle is a fundamental concept in geology that describes the dynamic transitions through geologic time among the three main rock types: sedimentary, metamorphic, and igneous. Due to the driving forces of the rock cycle, plate tectonics and the water cycle , rocks do not remain in equilibrium and are forced to change as they ...

  4. Cleavage (geology) - Wikipedia

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

    Cleavage is a type of rock foliation, a fabric element that describes the way planar features develop in a rock. Foliation is separated into two groups: primary and secondary. Primary deals with igneous and sedimentary rocks, while secondary deals with rocks that undergo metamorphism as a result of deformation. Cleavage is a type of secondary ...

  5. Rock (geology) - Wikipedia

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

    The use of rock has had a huge impact on the cultural and technological development of the human race. Rock has been used by humans and other hominids for at least 2.5 million years. [22] Lithic technology marks some of the oldest and continuously used technologies. The mining of rock for its metal content has been one of the most important ...

  6. Cementation (geology) - Wikipedia

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

    Minerals bond grains of sediment together by growing around them. This process is called cementation and is a part of the rock cycle. Cementation involves ions carried in groundwater chemically precipitating to form new crystalline material between sedimentary grains. The new pore-filling minerals form "bridges" between original sediment grains ...

  7. Cyclic sediments - Wikipedia

    en.wikipedia.org/wiki/Cyclic_sediments

    A Peritidal sedimentary cycle (or peritidal parasequence) is the typical result of the progradation of tidal flats on the lagoon, and may have an autocyclic or allocyclic origin. Thick successions of peritidal carbonates are deposited in shallow-water environments within, below and just above the tidal range.

  8. Formation of rocks - Wikipedia

    en.wikipedia.org/wiki/Formation_of_rocks

    Rock can also form in the absence of a substantial pressure gradient as material that condensed from a protoplanetary disk, without ever undergoing any transformations in the interior of a large object such as a planet or moon. Astrophysicists classify this as a fourth type of rock: primitive rock. This type is common in asteroids and meteorites.

  9. List of rock types - Wikipedia

    en.wikipedia.org/wiki/List_of_rock_types

    List of rocks on Mars – Alphabetical list of named rocks and meteorites found on Mars; Rock cycle – Transitional concept of geologic time; List of rock formations: for a list of unusual or culturally significant rock outcrops; Leaverite – Rock in the field that looks interesting but is actually not