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Agulhas Plateau, the Glossary

Index Agulhas Plateau

The Agulhas Plateau is an oceanic plateau located in the south-western Indian Ocean about south of South Africa.[1]

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Table of Contents

  1. 45 relations: Africa, African superswell, Agulhas Bank, Agulhas Basin, Agulhas Current, Agulhas Passage, Agulhas Return Current, Antarctic bottom water, Antarctic Intermediate Water, Antarctica, Atlantic Ocean, Basement (geology), Boundary current, Bouvet Island, Bruce C. Heezen, Continent-ocean boundary, Continental crust, Denudation, Early Cretaceous, Erosion, Explorer 61, Geoid, Gravity anomaly, Hotspot (geology), Indian Ocean, International waters, Karoo Supergroup, Kerguelen Plateau, Large igneous province, Lazarev Sea, Magnetic anomaly, Marie Tharp, Maud Rise, Mohorovičić discontinuity, North Atlantic Deep Water, Northeast Georgia Rise, Ocean Drilling Program, Oceanic crust, Oceanic plateau, Oligocene, South Africa, South African Journal of Geology, South America, South Georgia, Triple junction.

  2. Cretaceous volcanism
  3. Large igneous provinces
  4. Plateaus of the Indian Ocean

Africa

Africa is the world's second-largest and second-most populous continent after Asia.

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African superswell

The African superswell is a region including the Southern and Eastern African plateaus and the Southeastern Atlantic basin where exceptional tectonic uplift has occurred, resulting in terrain much higher than its surroundings.

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Agulhas Bank

The Agulhas Bank (from Portuguese for Cape Agulhas, Cabo das Agulhas, "Cape of Needles") is a broad, shallow part of the southern African continental shelf which extends up to south of Cape Agulhas before falling steeply to the abyssal plain.

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Agulhas Basin

The Agulhas Basin is an oceanic basin located south of South Africa where the South Atlantic Ocean and south-western Indian Ocean meet.

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Agulhas Current

The Agulhas Current is the western boundary current of the southwest Indian Ocean.

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Agulhas Passage

The Agulhas Passage is an abyssal channel located south of South Africa between the Agulhas Bank and Agulhas Plateau.

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Agulhas Return Current

The Agulhas Return Current (ARC) is an ocean current in the South Indian Ocean.

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Antarctic bottom water

The Antarctic bottom water (AABW) is a type of water mass in the Southern Ocean surrounding Antarctica with temperatures ranging from −0.8 to 2 °C (35 °F) and absolute salinities from 34.6 to 35.0 g/kg.

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Antarctic Intermediate Water (AAIW) is a cold, relatively low salinity water mass found mostly at intermediate depths in the Southern Ocean.

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Antarctica

Antarctica is Earth's southernmost and least-populated continent.

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Atlantic Ocean

The Atlantic Ocean is the second-largest of the world's five oceanic divisions, with an area of about.

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Basement (geology)

In geology, basement and crystalline basement are crystalline rocks lying above the mantle and beneath all other rocks and sediments.

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Boundary current

Boundary currents are ocean currents with dynamics determined by the presence of a coastline, and fall into two distinct categories: western boundary currents and eastern boundary currents.

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Bouvet Island

Bouvet Island is an uninhabited island and dependency of Norway.

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Bruce C. Heezen

Bruce Charles Heezen (April 11, 1924 – June 21, 1977) was an American geologist.

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Continent-ocean boundary

The continent-ocean boundary (COB) or continent-ocean transition (COT) or continent-ocean transition zone (COTZ) is the boundary between continental crust and oceanic crust on a passive margin or the zone of transition between these two crustal types.

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Continental crust

Continental crust is the layer of igneous, metamorphic, and sedimentary rocks that forms the geological continents and the areas of shallow seabed close to their shores, known as continental shelves.

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Denudation

Denudation is the geological process in which moving water, ice, wind, and waves erode the Earth's surface, leading to a reduction in elevation and in relief of landforms and landscapes.

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Early Cretaceous

The Early Cretaceous (geochronological name) or the Lower Cretaceous (chronostratigraphic name) is the earlier or lower of the two major divisions of the Cretaceous.

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Erosion

Erosion is the action of surface processes (such as water flow or wind) that removes soil, rock, or dissolved material from one location on the Earth's crust and then transports it to another location where it is deposited.

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Explorer 61

Magsat (Magnetic field Satellite, Applications Explorer Mission-C or AEM-C or Explorer 61) was a NASA / USGS (United States Geological Survey) spacecraft, launched on 30 October 1979.

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Geoid

The geoid is the shape that the ocean surface would take under the influence of the gravity of Earth, including gravitational attraction and Earth's rotation, if other influences such as winds and tides were absent.

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Gravity anomaly

The gravity anomaly at a location on the Earth's surface is the difference between the observed value of gravity and the value predicted by a theoretical model.

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Hotspot (geology)

In geology, hotspots (or hot spots) are volcanic locales thought to be fed by underlying mantle that is anomalously hot compared with the surrounding mantle.

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Indian Ocean

The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or approx.

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International waters

The terms international waters or transboundary waters apply where any of the following types of bodies of water (or their drainage basins) transcend international boundaries: oceans, large marine ecosystems, enclosed or semi-enclosed regional seas and estuaries, rivers, lakes, groundwater systems (aquifers), and wetlands.

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Karoo Supergroup

The Karoo Supergroup is the most widespread stratigraphic unit in Africa south of the Kalahari Desert.

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Kerguelen Plateau

The Kerguelen Plateau, also known as the Kerguelen–Heard Plateau, is an oceanic plateau and large igneous province (LIP) located on the Antarctic Plate, in the southern Indian Ocean. Agulhas Plateau and Kerguelen Plateau are Cretaceous volcanism, large igneous provinces and plateaus of the Indian Ocean.

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Large igneous province

A large igneous province (LIP) is an extremely large accumulation of igneous rocks, including intrusive (sills, dikes) and extrusive (lava flows, tephra deposits), arising when magma travels through the crust towards the surface. Agulhas Plateau and large igneous province are large igneous provinces.

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Lazarev Sea

The Lazarev Sea (More Lazareva) is a proposed name for a marginal sea of the Southern Ocean.

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Magnetic anomaly

In geophysics, a magnetic anomaly is a local variation in the Earth's magnetic field resulting from variations in the chemistry or magnetism of the rocks.

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Marie Tharp

Marie Tharp (July 30, 1920 – August 23, 2006) was an American geologist and oceanographic cartographer.

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Maud Rise

The Maud Rise is an oceanic plateau, which rises, at its shallowest, to depths of about 1,000 meters. Agulhas Plateau and Maud Rise are large igneous provinces.

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Mohorovičić discontinuity

The Mohorovičić discontinuityusually called the Moho discontinuity, Moho boundary, or just Mohois the boundary between the crust and the mantle of Earth.

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North Atlantic Deep Water

North Atlantic Deep Water (NADW) is a deep water mass formed in the North Atlantic Ocean.

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Northeast Georgia Rise

The Northeast Georgia Rise is an oceanic plateau located in the South Atlantic Ocean northeast of South Georgia Island and west of the Falkland Plateau. Agulhas Plateau and northeast Georgia Rise are large igneous provinces.

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Ocean Drilling Program

The Ocean Drilling Program (ODP) was a multinational effort to explore and study the composition and structure of the Earth's oceanic basins, running from 1985 to 2004.

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Oceanic crust

Oceanic crust is the uppermost layer of the oceanic portion of the tectonic plates.

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Oceanic plateau

An oceanic or submarine plateau is a large, relatively flat elevation that is higher than the surrounding relief with one or more relatively steep sides.

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Oligocene

The Oligocene is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present (to). As with other older geologic periods, the rock beds that define the epoch are well identified but the exact dates of the start and end of the epoch are slightly uncertain.

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South Africa

South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa.

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South African Journal of Geology

The South African Journal of Geology is a quarterly peer-reviewed scientific journal published by the Geological Society of South Africa that was established in March 1896 as the Transactions of the Geological Society of South Africa, obtaining its current title in 1987.

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South America

South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a considerably smaller portion in the Northern Hemisphere.

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South Georgia

South Georgia is an island in the South Atlantic Ocean that is part of the British Overseas Territory of South Georgia and the South Sandwich Islands.

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Triple junction

A triple junction is the point where the boundaries of three tectonic plates meet.

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See also

Cretaceous volcanism

Large igneous provinces

Plateaus of the Indian Ocean

References

[1] https://en.wikipedia.org/wiki/Agulhas_Plateau