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  2. Blowhole (geology) - Wikipedia

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

    Sea-based blowhole Land-based blowhole. In geology, a blowhole or marine geyser is formed as sea caves grow landward and upward into vertical shafts and expose themselves toward the surface, which can result in hydraulic compression of seawater that is released through a port from the top of the blowhole. [1]

  3. Geo (landform) - Wikipedia

    en.wikipedia.org/wiki/Geo_(landform)

    A geo or gio (/ ɡ j oʊ / GYOH, from Old Norse gjá [1]) is an inlet, a gully or a narrow and deep cleft in the face of a cliff. Geos are common on the coastline of the Shetland and Orkney islands. They are created by the wave driven erosion of cliffs along faults and bedding planes in the rock. Geos may have sea caves at their heads. Such sea ...

  4. Pancake Rocks and Blowholes - Wikipedia

    en.wikipedia.org/wiki/Pancake_Rocks_and_Blowholes

    The Pancake Rocks are a heavily eroded limestone formation where the sea bursts through several vertical blowholes during incoming swells, particularly at high tide. The limestone was formed in the Oligocene period (around 22–30 million years old), a period in the geological history of New Zealand where most of the continent of Zealandia was submerged beneath shallow seas. [2]

  5. Category:Blowholes - Wikipedia

    en.wikipedia.org/wiki/Category:Blowholes

    The sea cave and the land surface become conjoined when the roof of the cave collapses. Blowholes are formed by the process of erosion. When waves enter the mouth of the cave they will be funneled up towards the blowhole, which can become quite spectacular if the geometry and state of the weather are appropriate.

  6. Geological formation - Wikipedia

    en.wikipedia.org/wiki/Geological_formation

    A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exposed in a geographical region (the stratigraphic column).

  7. Geomechanics - Wikipedia

    en.wikipedia.org/wiki/Geomechanics

    The two main disciplines of geomechanics are soil mechanics and rock mechanics.Former deals with the soil behaviour from a small scale to a landslide scale. The latter deals with issues in geosciences related to rock mass characterization and rock mass mechanics, such as applied to petroleum, mining and civil engineering problems, such as borehole stability, tunnel design, rock breakage, slope ...

  8. Aeolian processes - Wikipedia

    en.wikipedia.org/wiki/Aeolian_processes

    Wind erosion of soil at the foot of Chimborazo, Ecuador Rock carved by drifting sand below Fortification Rock in Arizona (Photo by Timothy H. O'Sullivan, USGS, 1871). Aeolian processes, also spelled eolian, [1] pertain to wind activity in the study of geology and weather and specifically to the wind's ability to shape the surface of the Earth (or other planets).

  9. Formation of rocks - Wikipedia

    en.wikipedia.org/wiki/Formation_of_rocks

    Off-Earth, rock can also form in the absence of a substantial pressure gradient as material that condensed from a protoplanetary disk, without ever undergoing transformations in the interior of a large object such as planets and moons.