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69 relations: Apatite, Arenite, Argillaceous minerals, Augite, Avalanche, Biotite, Calcareous, Calcite, Cambrian, Cenozoic, Chert, Chlorite group, Clay, Continental shelf, Ecca Group, England, Epidote, Feldspar, Felsite, Fossil, Friability, Garnet, Geologist, German language, Gneiss, Grain size, Gravel, Greywacke zone, Hornblende, Ireland, Iron oxide, Lake District, Limestone, Lithic fragment (geology), Matrix (geology), Möhne Reservoir, Mesozoic, Metamorphism, Mineral, Mud, New Zealand, Oceanic trench, Orthoclase, Paleozoic, Petrology, Plagioclase, Pyrite, Quartz, Quartzite, Recrystallization (geology), ..., Sand, Sandstone, Schist, Scotland, Sediment, Sedimentary rock, Sedimentation, Shale, Silicon dioxide, Silurian, Slate, South Africa, Stratum, Titanite, Torlesse Greywacke, Tourmaline, Turbidite, Turbidity current, Wales. Expand index (19 more) »
Apatite
Apatite is a group of phosphate minerals, usually referring to hydroxylapatite, fluorapatite and chlorapatite, with high concentrations of OH−, F− and Cl− ions, respectively, in the crystal.
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Arenite
Arenite (Latin Arena, sand) is a sedimentary clastic rock with sand grain size between 0.0625 mm (0.00246 in) and 2 mm (0.08 in) and contain less than 15% matrix.
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Argillaceous minerals
Argillaceous minerals may appear silvery upon optical reflection and are minerals containing substantial amounts of clay-like components (ἄργιλλος.
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Augite
Augite is a common rock-forming pyroxene mineral with formula (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6.
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Avalanche
An avalanche (also called a snowslide) is a cohesive slab of snow lying upon a weaker layer of snow in the snowpack that fractures and slides down a steep slope when triggered.
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Biotite
Biotite is a common phyllosilicate mineral within the mica group, with the approximate chemical formula.
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Calcareous
Calcareous is an adjective meaning "mostly or partly composed of calcium carbonate", in other words, containing lime or being chalky.
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Calcite
Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (CaCO3).
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Cambrian
The Cambrian Period was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon.
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Cenozoic
The Cenozoic Era meaning "new life", is the current and most recent of the three Phanerozoic geological eras, following the Mesozoic Era and, extending from 66 million years ago to the present day.
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Chert
Chert is a fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline silica, the mineral form of silicon dioxide (SiO2).
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Chlorite group
The chlorites are a group of phyllosilicate minerals.
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Clay
Clay is a finely-grained natural rock or soil material that combines one or more clay minerals with possible traces of quartz (SiO2), metal oxides (Al2O3, MgO etc.) and organic matter.
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Continental shelf
The continental shelf is an underwater landmass which extends from a continent, resulting in an area of relatively shallow water known as a shelf sea.
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Ecca Group
The Ecca Group is a group of sedimentary geological formations found in southern Africa.
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England
England is a country that is part of the United Kingdom.
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Epidote
Epidote is a calcium aluminium iron sorosilicate mineral.
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Feldspar
Feldspars (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8) are a group of rock-forming tectosilicate minerals that make up about 41% of the Earth's continental crust by weight.
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Felsite
Felsite is a very fine-grained volcanic rock that may or may not contain larger crystals.
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Fossil
A fossil (from Classical Latin fossilis; literally, "obtained by digging") is any preserved remains, impression, or trace of any once-living thing from a past geological age.
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Friability
Friability, the condition of being friable, describes the tendency of a solid substance to break into smaller pieces under duress or contact, especially by rubbing.
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Garnet
Garnets are a group of silicate minerals that have been used since the Bronze Age as gemstones and abrasives.
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Geologist
A geologist is a scientist who studies the solid and liquid matter that constitutes the Earth as well as the processes that shape it.
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German language
German (Deutsch) is a West Germanic language that is mainly spoken in Central Europe.
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Gneiss
Gneiss is a common distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks.
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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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Gravel
Gravel is a loose aggregation of rock fragments.
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Greywacke zone
The greywacke zone is a band of Paleozoic metamorphosed sedimentary rocks that forms an east-west band through the Austrian Alps.
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Hornblende
Hornblende is a complex inosilicate series of minerals (ferrohornblende – magnesiohornblende).
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Ireland
Ireland (Éire; Ulster-Scots: Airlann) is an island in the North Atlantic.
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Iron oxide
Iron oxides are chemical compounds composed of iron and oxygen.
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Lake District
The Lake District, also known as the Lakes or Lakeland, is a mountainous region in North West England.
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Limestone
Limestone is a sedimentary rock, composed mainly of skeletal fragments of marine organisms such as coral, forams and molluscs.
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Lithic fragment (geology)
Lithic fragments, or lithics, are pieces of other rocks that have been eroded down to sand size and now are sand grains in a sedimentary rock.
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Matrix (geology)
The matrix or groundmass of rock is the finer-grained mass of material wherein larger grains, crystals or clasts are embedded.
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Möhne Reservoir
The Möhne Reservoir, or Moehne Reservoir, is an artificial lake in North Rhine-Westphalia, some 45 km east of Dortmund, Germany.
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Mesozoic
The Mesozoic Era is an interval of geological time from about.
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Metamorphism
Metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change).
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Mineral
A mineral is a naturally occurring chemical compound, usually of crystalline form and not produced by life processes.
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Mud
Mud is a liquid or semi-liquid mixture of water and any combination of different kinds of soil (loam, silt, and clay).
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New Zealand
New Zealand (Aotearoa) is a sovereign island country in the southwestern Pacific Ocean.
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Oceanic trench
Oceanic trenches are topographic depressions of the sea floor, relatively narrow in width, but very long.
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Orthoclase
Orthoclase, or orthoclase feldspar (endmember formula KAlSi3O8), is an important tectosilicate mineral which forms igneous rock.
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Paleozoic
The Paleozoic (or Palaeozoic) Era (from the Greek palaios (παλαιός), "old" and zoe (ζωή), "life", meaning "ancient life") is the earliest of three geologic eras of the Phanerozoic Eon.
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Petrology
Petrology (from the Greek πέτρος, pétros, "rock" and λόγος, lógos, "subject matter", see -logy) is the branch of geology that studies rocks and the conditions under which they form.
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Plagioclase
Plagioclase is a series of tectosilicate (framework silicate) minerals within the feldspar group.
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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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Quartz
Quartz is a mineral composed of silicon and oxygen atoms in a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2.
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Quartzite
Quartzite (from Quarzit) is a hard, non-foliated metamorphic rock which was originally pure quartz sandstone.
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Recrystallization (geology)
In geology, solid-state recrystallization is a metamorphic process that occurs under temperature and pressure where atoms of a mineral are reorganized by diffusion and/or dislocation glide.
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Sand
Sand is a naturally occurring granular material composed of finely divided rock and mineral particles.
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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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Schist
Schist (pronounced) is a medium-grade metamorphic rock with medium to large, flat, sheet-like grains in a preferred orientation (nearby grains are roughly parallel).
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Scotland
Scotland (Alba) is a country that is part of the United Kingdom and covers the northern third of the island of Great Britain.
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Sediment
Sediment is a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of wind, water, or ice, and/or by the force of gravity acting on the particles.
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Sedimentary rock
Sedimentary rocks are types of rock that are formed by the deposition and subsequent cementation of that material at the Earth's surface and within bodies of water.
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Sedimentation
Sedimentation is the tendency for particles in suspension to settle out of the fluid in which they are entrained and come to rest against a barrier.
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Shale
Shale is a fine-grained, clastic sedimentary rock composed of mud that is a mix of flakes of clay minerals and tiny fragments (silt-sized particles) of other minerals, especially quartz and calcite.
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Silicon dioxide
Silicon dioxide, also known as silica (from the Latin silex), is an oxide of silicon with the chemical formula, most commonly found in nature as quartz and in various living organisms.
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Silurian
The Silurian is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at million years ago (Mya), to the beginning of the Devonian Period, Mya.
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Slate
Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism.
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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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Stratum
In geology and related fields, a stratum (plural: strata) is a layer of sedimentary rock or soil, or igneous rock that were formed at the Earth's surface, with internally consistent characteristics that distinguish it from other layers.
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Titanite
Titanite, or sphene (from the Greek sphenos (σφηνώ), meaning wedge), is a calcium titanium nesosilicate mineral, CaTiSiO5.
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Torlesse Greywacke
Torlesse Greywacke is a type of sedimentary rock.
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Tourmaline
Tourmaline is a crystalline boron silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium.
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Turbidite
A turbidite is the geologic deposit of a turbidity current, which is a type of sediment gravity flow responsible for distributing vast amounts of clastic sediment into the deep ocean.
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Turbidity current
A turbidity current is most typically an underwater current of usually rapidly moving, sediment-laden water moving down a slope.
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Wales
Wales (Cymru) is a country that is part of the United Kingdom and the island of Great Britain.
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Redirects here:
Grauwacke, Graywacke, Greywackes, Subgraywacke, Wacke.
References
[1] https://en.wikipedia.org/wiki/Greywacke
