Wrekin Terrane, the Glossary
The Wrekin Terrane is one of five inferred fault bounded terranes that make up the basement rocks of the southern United Kingdom.[1]
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47 relations: Amphibolite, Basalt, Bentonite, Breccia, Cambrian, Continental crust, Crustal recycling, Cymru Terrane, Diorite, Ediacaran, Ediacaran biota, Facies, Fauna, Fractional crystallization (geology), Gneiss, Granophyre, Greenschist, Inliers and outliers (geology), Lava, Longmyndian Supergroup, Malvern Hills, Malvern Line, Matground, Metamorphic rock, Neoproterozoic, Oceanic crust, Precambrian, Pyroclastic rock, Rhyolite, Schist, Stanner Rocks, Stretton Group, Subaerial eruption, Subduction, Taxon, Terrane, The Wrekin, Tonalite, Tuff, Turbidite, Uranium–lead dating, Uriconian, Volcanic arc, Welsh Borderland Fault System, Wentnor Group, Wrekin Terrane, Zircon.
- Precambrian Europe
Amphibolite
Amphibolite is a metamorphic rock that contains amphibole, especially hornblende and actinolite, as well as plagioclase feldspar, but with little or no quartz.
See Wrekin Terrane and Amphibolite
Basalt
Basalt is an aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the surface of a rocky planet or moon.
Bentonite
Bentonite is an absorbent swelling clay consisting mostly of montmorillonite (a type of smectite) which can either be Na-montmorillonite or Ca-montmorillonite.
See Wrekin Terrane and Bentonite
Breccia
Breccia is a rock composed of large angular broken fragments of minerals or rocks cemented together by a fine-grained matrix.
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Cambrian
The Cambrian is the first geological period of the Paleozoic Era, and the Phanerozoic Eon.
See Wrekin Terrane and Cambrian
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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Crustal recycling
Crustal recycling is a tectonic process by which surface material from the lithosphere is recycled into the mantle by subduction erosion or delamination.
See Wrekin Terrane and Crustal recycling
Cymru Terrane
The Cymru Terrane is one of five inferred fault bounded terranes that make up the basement rocks of the southern United Kingdom. Wrekin Terrane and Cymru Terrane are geology of Wales, Precambrian Europe and terranes.
See Wrekin Terrane and Cymru Terrane
Diorite
Diorite is an intrusive igneous rock formed by the slow cooling underground of magma (molten rock) that has a moderate content of silica and a relatively low content of alkali metals.
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Ediacaran
The Ediacaran is a geological period of the Neoproterozoic Era that spans 96 million years from the end of the Cryogenian Period at 635 Mya to the beginning of the Cambrian Period at 538.8 Mya.
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Ediacaran biota
The Ediacaran (formerly Vendian) biota is a taxonomic period classification that consists of all life forms that were present on Earth during the Ediacaran Period.
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Facies
In geology, a facies (same pronunciation and spelling in the plural) is a body of rock with distinctive characteristics.
Fauna
Fauna (faunae or faunas) is all of the animal life present in a particular region or time.
Fractional crystallization (geology)
Fractional crystallization, or crystal fractionation, is one of the most important geochemical and physical processes operating within crust and mantle of a rocky planetary body, such as the Earth.
See Wrekin Terrane and Fractional crystallization (geology)
Gneiss
Gneiss is a common and widely distributed type of metamorphic rock.
Granophyre
Granophyre (from granite and porphyry) is a subvolcanic rock that contains quartz and alkali feldspar in characteristic angular intergrowths such as those in the accompanying image.
See Wrekin Terrane and Granophyre
Greenschist
Greenschists are metamorphic rocks that formed under the lowest temperatures and pressures usually produced by regional metamorphism, typically and 2–10 kilobars.
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Inliers and outliers (geology)
An inlier is an area of older rocks surrounded by younger rocks.
See Wrekin Terrane and Inliers and outliers (geology)
Lava
Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface.
Longmyndian Supergroup
The Longmyndian Supergroup is a sequence of Late Precambrian rocks that outcrop between the Pontesford–Linley Fault System and the Church Stretton Fault System in the Welsh Borderland Fault System. Wrekin Terrane and Longmyndian Supergroup are geology of Wales and Precambrian Europe.
See Wrekin Terrane and Longmyndian Supergroup
Malvern Hills
The Malvern Hills are in the English counties of Worcestershire, Herefordshire and a small area of northern Gloucestershire, dominating the surrounding countryside and the towns and villages of the district of Malvern.
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Malvern Line
The Malvern Line or Malvern Lineament is the name applied to a north-south aligned lineament which runs through the Malvern Hills of western England and extends southwards towards Bristol and northwards past Stourport.
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Matground
Matgrounds are strong surface layers of seabed-hardening bacterial fauna preserved in the Proterozoic and lower Cambrian.
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Metamorphic rocks arise from the transformation of existing rock to new types of rock in a process called metamorphism.
See Wrekin Terrane and Metamorphic rock
Neoproterozoic
The Neoproterozoic Era is the unit of geologic time from 1 billion to 538.8 million years ago.
See Wrekin Terrane and Neoproterozoic
Oceanic crust
Oceanic crust is the uppermost layer of the oceanic portion of the tectonic plates.
See Wrekin Terrane and Oceanic crust
Precambrian
The Precambrian (or Pre-Cambrian, sometimes abbreviated pC, or Cryptozoic) is the earliest part of Earth's history, set before the current Phanerozoic Eon.
See Wrekin Terrane and Precambrian
Pyroclastic rock
Pyroclastic rocks are clastic rocks composed of rock fragments produced and ejected by explosive volcanic eruptions.
See Wrekin Terrane and Pyroclastic rock
Rhyolite
Rhyolite is the most silica-rich of volcanic rocks.
See Wrekin Terrane and Rhyolite
Schist
Schist is a medium-grained metamorphic rock showing pronounced schistosity.
Stanner Rocks
Stanner Rocks is a rounded hill, steep in parts, which lies close to the Wales border with England between Walton and Kington.
See Wrekin Terrane and Stanner Rocks
Stretton Group
The Stretton Group is a group of rocks associated with the Longmyndian Supergroup of Ediacaran age, in Shropshire, England. Wrekin Terrane and Stretton Group are Precambrian Europe.
See Wrekin Terrane and Stretton Group
Subaerial eruption
In volcanology, a subaerial eruption is any sort of volcanic eruption that occurs on the Earth's surface, or in the open air "under the air", and not underwater or underground.
See Wrekin Terrane and Subaerial eruption
Subduction
Subduction is a geological process in which the oceanic lithosphere and some continental lithosphere is recycled into the Earth's mantle at convergent boundaries.
See Wrekin Terrane and Subduction
Taxon
In biology, a taxon (back-formation from taxonomy;: taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit.
Terrane
In geology, a terrane (in full, a tectonostratigraphic terrane) is a crust fragment formed on a tectonic plate (or broken off from it) and accreted or "sutured" to crust lying on another plate. Wrekin Terrane and terrane are terranes.
See Wrekin Terrane and Terrane
The Wrekin
The Wrekin is a hill in east Shropshire, England.
See Wrekin Terrane and The Wrekin
Tonalite
Tonalite is an igneous, plutonic (intrusive) rock, of felsic composition, with phaneritic (coarse-grained) texture.
See Wrekin Terrane and Tonalite
Tuff
Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption.
Turbidite
A turbidite is the geologic deposit of a turbidity current, which is a type of amalgamation of fluidal and sediment gravity flow responsible for distributing vast amounts of clastic sediment into the deep ocean.
See Wrekin Terrane and Turbidite
Uranium–lead dating
Uranium–lead dating, abbreviated U–Pb dating, is one of the oldest and most refined of the radiometric dating schemes.
See Wrekin Terrane and Uranium–lead dating
Uriconian
Uriconian rocks are volcanic rocks found in parts of Shropshire, United Kingdom. Wrekin Terrane and Uriconian are geology of Wales.
See Wrekin Terrane and Uriconian
Volcanic arc
A volcanic arc (also known as a magmatic arc) is a belt of volcanoes formed above a subducting oceanic tectonic plate, with the belt arranged in an arc shape as seen from above.
See Wrekin Terrane and Volcanic arc
Welsh Borderland Fault System
The Welsh Borderland Fault System is a zone of faulting and associated folding which runs northeastwards through Wales from Pembrokeshire through Carmarthenshire and Powys into Shropshire in England. Wrekin Terrane and Welsh Borderland Fault System are geology of Wales.
See Wrekin Terrane and Welsh Borderland Fault System
Wentnor Group
The Wentnor Group is a group of rocks associated with the Longmyndian Supergroup of Precambrian age in present-day Wales, U.K. The rocks are located within the confines between the Church Stretton Fault and the Pontesford-Lindley Lineament. Wrekin Terrane and Wentnor Group are geology of Wales and Precambrian Europe.
See Wrekin Terrane and Wentnor Group
Wrekin Terrane
The Wrekin Terrane is one of five inferred fault bounded terranes that make up the basement rocks of the southern United Kingdom. Wrekin Terrane and Wrekin Terrane are geology of Wales, Precambrian Europe and terranes.
See Wrekin Terrane and Wrekin Terrane
Zircon
Zircon is a mineral belonging to the group of nesosilicates and is a source of the metal zirconium.
See also
Precambrian Europe
- Arfon Group
- Cymru Terrane
- Eozoon canadense
- Gwna Group
- Longmyndian Supergroup
- North Stack
- Rapakivi granite
- Sarn Complex
- Stretton Group
- Wentnor Group
- Wrekin Terrane
References
[1] https://en.wikipedia.org/wiki/Wrekin_Terrane
Also known as Coomb Volcanic Formation.