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  2. List of rock types - Wikipedia

    en.wikipedia.org/wiki/List_of_rock_types

    The following is a list of rock types recognized by geologists. There is no agreed number of specific types of rock. There is no agreed number of specific types of rock. Any unique combination of chemical composition, mineralogy, grain size, texture, or other distinguishing characteristics can describe a rock type.

  3. List of individual rocks - Wikipedia

    en.wikipedia.org/wiki/List_of_individual_rocks

    Anorthosite Moon rock collected by Apollo 16 astronauts. It is approximately 3.9 billion years old and is the largest Moon rock brought from the Moon. Black Rock: Tooele County, Utah, United States: Large rock on the shoreline of Great Salt Lake. Black Stone: Kaaba, Great Mosque, Mecca, Saudi Arabia: A highly respected Islamic stone set in the ...

  4. Weald Clay - Wikipedia

    en.wikipedia.org/wiki/Weald_Clay

    Weald Clay or the Weald Clay Formation is a Lower Cretaceous sedimentary rock unit underlying areas of South East England, between the North and South Downs, in an area called the Weald Basin. It is the uppermost unit of the Wealden Group of rocks within the Weald Basin, and the upper portion of the unit is equivalent in age to the exposed ...

  5. Oasis - Wikipedia

    en.wikipedia.org/wiki/Oasis

    In ecology, an oasis (/ oʊ ˈ eɪ s ɪ s /; pl.: oases / oʊ ˈ eɪ s iː z /) is a fertile area of a desert or semi-desert environment [1] that sustains plant life and provides habitat for animals. Surface water may be present, or water may only be accessible from wells or underground channels created by humans.

  6. Badlands - Wikipedia

    en.wikipedia.org/wiki/Badlands

    Badlands arise from a combination of an impermeable but easily eroded ground surface, sparse vegetation, and infrequent but heavy rainfall. [6] The surface bedrock is typically mudrock, sometimes with evaporites, with only occasional beds of more resistant sandstone. [5] Infrequent heavy rains lead to heavy erosional dissection.

  7. List of shields and cratons - Wikipedia

    en.wikipedia.org/wiki/List_of_shields_and_cratons

    A craton is an ancient part of the Earth's continental crust which has been more or less stable since Precambrian times. Cratons whose ancient rocks are widely exposed at the surface, often with relatively subdued relief, are known as shields.

  8. Structures built by animals - Wikipedia

    en.wikipedia.org/wiki/Structures_built_by_animals

    A so-called "cathedral" mound produced by a termite colony. Structures built by non-human animals, often called animal architecture, [1] are common in many species. Examples of animal structures include termite mounds, ant hills, wasp and beehives, burrow complexes, beaver dams, elaborate nests of birds, and webs of spiders.

  9. River Mole - Wikipedia

    en.wikipedia.org/wiki/River_Mole

    The Mole rises south of Rusper in West Sussex, where an outcrop of the Hastings Beds sandstone dips below the impermeable Weald Clay. [6] From the source to Dorking , the river drains an area of 340 km 2 (130 sq mi), of which approximately 60% is on Wealden or Atherfield Clay, 20% is on Tunbridge Wells Sand and 20% is on greensand . [ 2 ]