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Orca Basin

Index Orca Basin

The Orca Basin is a mid-slope, silled, mini-basin in the northern Gulf of Mexico some 300 km southwest of the Mississippi River mouth on the Louisiana continental slope. [1]

34 relations: AAPG Bulletin, Biogenic substance, Brine, Brine pool, Clathrate hydrate, Coccolith, Continental margin, Deep Sea Drilling Project, Deglaciation, Diapir, Foraminifera, Glacial period, Grain size, Gulf of Mexico, Hypoxia (environmental), Jurassic, Laurentide Ice Sheet, Louann Salt, Louisiana, Marine and Petroleum Geology, Mbsf, Meltwater, Methane clathrate, Mississippi River, Mississippi River Delta, North America, Plankton, Proxy (climate), Pyrite, Red Sea, Salinity, Salt tectonics, Solvation, Stable isotope ratio.

AAPG Bulletin

The AAPG Bulletin is a monthly peer-reviewed scientific journal covering geosciences and associated technologies relating to the energy industry.

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Biogenic substance

A biogenic substance is a substance produced by life processes.

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Brine

Brine is a high-concentration solution of salt (usually sodium chloride) in water.

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Brine pool

A brine pool is a large area of brine on the ocean basin.

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Clathrate hydrate

Clathrate hydrates, or gas clathrates, gas hydrates, clathrates, hydrates, etc., are crystalline water-based solids physically resembling ice, in which small non-polar molecules (typically gases) or polar molecules with large hydrophobic moieties are trapped inside "cages" of hydrogen bonded, frozen water molecules.

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Coccolith

Coccoliths are individual plates of calcium carbonate formed by coccolithophores (single-celled algae such as Emiliania huxleyi) which are arranged around them in a coccosphere.

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Continental margin

The continental margin is one of the three major zones of the ocean floor, the other two being deep-ocean basins and mid-ocean ridges.

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Deep Sea Drilling Project

The Deep Sea Drilling Project (DSDP) was an ocean drilling project operated from 1968 to 1983.

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Deglaciation

Deglaciation describes the transition from full glacial conditions during ice ages, to warm interglacials, characterized by global warming and sea level rise due to change in continental ice volume (IPCC AR5).

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Diapir

A diapir (French, from Greek diapeirein, to pierce through) is a type of geologic intrusion in which a more mobile and ductily deformable material is forced into brittle overlying rocks.

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Foraminifera

Foraminifera (Latin for "hole bearers"; informally called "forams") are members of a phylum or class of amoeboid protists characterized by streaming granular ectoplasm for catching food and other uses; and commonly an external shell (called a "test") of diverse forms and materials.

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Glacial period

A glacial period (alternatively glacial or glaciation) is an interval of time (thousands of years) within an ice age that is marked by colder temperatures and glacier advances.

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Grain size

Grain size (or particle size) is the diameter of individual grains of sediment, or the lithified particles in clastic rocks.

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Gulf of Mexico

The Gulf of Mexico (Golfo de México) is an ocean basin and a marginal sea of the Atlantic Ocean, largely surrounded by the North American continent.

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Hypoxia (environmental)

Hypoxia refers to low oxygen conditions.

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Jurassic

The Jurassic (from Jura Mountains) was a geologic period and system that spanned 56 million years from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period Mya.

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Laurentide Ice Sheet

The Laurentide Ice Sheet was a massive sheet of ice that covered millions of square kilometers, including most of Canada and a large portion of the northern United States, multiple times during the Quaternary glacial epochs— from 2.588 ± 0.005 million years ago to the present.

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Louann Salt

The Louann Salt is a widespread evaporite formation that formed in the Gulf of Mexico during the Callovian in the mid Jurassic.

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Louisiana

Louisiana is a state in the southeastern region of the United States.

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Marine and Petroleum Geology

Marine and Petroleum Geology is a peer-reviewed scientific journal covering marine and petroleum geology.

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Mbsf

The acronym mbsf, meaning metres below seafloor, is a convention used for depths below the seabed used in geology, paleontology, oceanography, petrology and exploration drilling.

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Meltwater

Meltwater is water released by the melting of snow or ice, including glacial ice, tabular icebergs and ice shelves over oceans.

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Methane clathrate

Methane clathrate (CH4·5.75H2O) or (4CH4·23H2O), also called methane hydrate, hydromethane, methane ice, fire ice, natural gas hydrate, or gas hydrate, is a solid clathrate compound (more specifically, a clathrate hydrate) in which a large amount of methane is trapped within a crystal structure of water, forming a solid similar to ice.

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Mississippi River

The Mississippi River is the chief river of the second-largest drainage system on the North American continent, second only to the Hudson Bay drainage system.

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Mississippi River Delta

The Mississippi River Delta region is a 3-million-acre (12,000 km2) area of land that stretches from Vermilion Bay on the west, to the Chandeleur Islands in the Gulf of Mexico on the southeastern coast of Louisiana.

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North America

North America is a continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere; it is also considered by some to be a northern subcontinent of the Americas.

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Plankton

Plankton (singular plankter) are the diverse collection of organisms that live in large bodies of water and are unable to swim against a current.

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Proxy (climate)

In the study of past climates ("paleoclimatology"), climate proxies are preserved physical characteristics of the past that stand in for direct meteorological measurements and enable scientists to reconstruct the climatic conditions over a longer fraction of the Earth's history.

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Pyrite

The mineral pyrite, or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula FeS2 (iron(II) disulfide).

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Red Sea

The Red Sea (also the Erythraean Sea) is a seawater inlet of the Indian Ocean, lying between Africa and Asia.

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Salinity

Salinity is the saltiness or amount of salt dissolved in a body of water (see also soil salinity).

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Salt tectonics

right Salt tectonics is concerned with the geometries and processes associated with the presence of significant thicknesses of evaporites containing rock salt within a stratigraphic sequence of rocks.

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Solvation

Solvation describes the interaction of solvent with dissolved molecules.

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Stable isotope ratio

The term stable isotope has a meaning similar to stable nuclide, but is preferably used when speaking of nuclides of a specific element.

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References

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

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