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Portishead Pier to Black Nore SSSI

Index Portishead Pier to Black Nore SSSI

Portishead Pier to Black Nore SSSI is a 71.8 hectare geological Site of Special Scientific Interest near the town of Portishead in North Somerset, notified in 1952. [1]

15 relations: Alluvium, Arthrodira, Carboniferous, Devonian, Evolution of fish, Groenlandaspis, Hectare, Holoptychius, North Somerset, Orogeny, Pennsylvanian (geology), Portishead, Somerset, Sandstone, Site of Special Scientific Interest, Variscan orogeny.

Alluvium

Alluvium (from the Latin alluvius, from alluere, "to wash against") is loose, unconsolidated (not cemented together into a solid rock) soil or sediments, which has been eroded, reshaped by water in some form, and redeposited in a non-marine setting.

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Arthrodira

Arthrodira is an order of extinct armoured, jawed fishes of the class Placodermi that flourished in the Devonian period before their sudden extinction, surviving for about 50 million years and penetrating most marine ecological niches.

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Carboniferous

The Carboniferous is a geologic period and system that spans 60 million years from the end of the Devonian Period million years ago (Mya), to the beginning of the Permian Period, Mya.

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Devonian

The Devonian is a geologic period and system of the Paleozoic, spanning 60 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya.

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Evolution of fish

The evolution of fish began about 530 million years ago during the Cambrian explosion.

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Groenlandaspis

Groenlandaspis ("Greenland Shield") is an extinct genus of arthrodire from the Late Devonian.

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Hectare

The hectare (SI symbol: ha) is an SI accepted metric system unit of area equal to a square with 100 meter sides, or 10,000 m2, and is primarily used in the measurement of land.

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Holoptychius

Holoptychius is an extinct genus of porolepiform lobe-finned fish from the Middle Devonian to Carboniferous (Mississippian) periods.

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North Somerset

North Somerset is a unitary authority area in England.

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Orogeny

An orogeny is an event that leads to a large structural deformation of the Earth's lithosphere (crust and uppermost mantle) due to the interaction between plate tectonics.

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Pennsylvanian (geology)

The Pennsylvanian (also known as Upper Carboniferous or Late Carboniferous) is, in the ICS geologic timescale, the younger of two subperiods (or upper of two subsystems) of the Carboniferous Period.

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Portishead, Somerset

Portishead is a coastal town on the Severn Estuary, close to Bristol, but within the unitary authority of North Somerset, which falls within the ceremonial county of Somerset, England.

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Sandstone

Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) mineral particles or rock fragments.

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Site of Special Scientific Interest

A Site of Special Scientific Interest (SSSI) in Great Britain or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland is a conservation designation denoting a protected area in the United Kingdom and Isle of Man.

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Variscan orogeny

The Variscan or Hercynian orogeny is a geologic mountain-building event caused by Late Paleozoic continental collision between Euramerica (Laurussia) and Gondwana to form the supercontinent of Pangaea.

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References

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

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