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A blowhole system always contains three main features: a catchment entrance, a compression cavern and an expelling port. The arrangement, angle and size of these three features determine the force of the air to water ratio that is ejected from the port. [6] The blowhole feature tends to occur in the most distal section of a littoral cave. As ...
Calder's Geo, Shetland Geo of Sclaites at Duncansby Head, Caithness. 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.
Blowhole – Hole at the top of a sea-cave which allows waves to force water or spray out of the hole; Blowout – Depressions in a sand dune ecosystem caused by the removal of sediments by wind; Bluff – Tall, near vertical rock face; Bornhardt – A large dome-shaped, steep-sided, bald rock; Braided channel – Network of river channels
A submergent landform: the drowned river valley of Georges River in the greater Sydney area, AustraliaSubmergent coastlines or drowned coastlines are stretches along the coast that have been inundated by the sea by a relative rise in sea levels from either isostacy or eustacy.
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]
Freshwater Bay, Isle of Wight is an example of an area of concordant coastline - the town of Freshwater is situated on a cove which formed in the hard chalk coastline.. In coastal geography, a concordant, longitudinal, or Pacific type coastline occurs where beds, or layers, of differing rock types are folded into ridges that run parallel to the coast. [1]
Mapped global geologic provinces. A geologic map or geological map is a special-purpose map made to show various geological features. Rock units or geologic strata are shown by color or symbols.
Diagram showing the principle of a cone penetrometer to obtain the soil's strength profile. Diagram showing the principle of a shear vane to measure the soil's peak strength and residual strength. Information on the mechanical strength of the soil can be obtained in situ (from the seabed itself as opposed to in a laboratory from a soil sample).