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  2. Blowhole (geology) - Wikipedia

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

    Marine erosion on rocky coastlines produce blowholes that are found throughout the world. They are found at intersecting faults and on the windward sides of a coastline where they receive higher wave energy from the open ocean. [5] The development of a blowhole is linked to the formation of a littoral cave.

  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. 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.

  5. 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]

  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. Deposition (geology) - Wikipedia

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

    The formation of this harbour has occurred due to active erosional processes on an extinct shield volcano, whereby the sea has flooded the caldera, creating an inlet 16 km in length, with an average width of 2 km and a depth of −13 m relative to mean sea level at the 9 km point down the transect of the central axis. [5]

  8. Geomorphology - Wikipedia

    en.wikipedia.org/wiki/Geomorphology

    Weathering is the chemical and physical disruption of earth materials in place on exposure to atmospheric or near surface agents, and is typically studied by soil scientists and environmental chemists, but is an essential component of geomorphology because it is what provides the material that can be moved in the first place.

  9. Hālona Blowhole - Wikipedia

    en.wikipedia.org/wiki/Hālona_Blowhole

    On windy days when the tide is high, the ocean breeze sends the waves rolling on to the shore where the rock formation then shoots sea spray high into the air through the cave acting like a geyser. The blowhole is most active when the tide is high and the winds are strong, [3] and it can shoot sea spray up to thirty feet high in the air. [4]