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Cone sheet information


A cone sheet at Mingary, Ardnamurchan, Scotland
Closer view of a cone sheet at Mingary, Ardnamurchan

A cone sheet is a type of high-level igneous intrusion of subvolcanic rock, found in partly eroded central volcanic complexes. Cone sheets are relatively thin inclined sheets, generally just a few metres thick, with the geometry of a downward-pointing cone. Viewed from above, their outcrop is typically circular to elliptical. They were originally described from the Ardnamurchan, Mull and other central complexes of the British Tertiary Volcanic Province (now recognised as part of the North Atlantic Igneous Province).

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Cone sheet

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A cone sheet is a type of high-level igneous intrusion of subvolcanic rock, found in partly eroded central volcanic complexes. Cone sheets are relatively...

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Igneous intrusion

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pressure, and are more common in regions of crustal tension. Ring dikes and cone sheets are dikes with particular forms that are associated with the formation...

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Sheet intrusion

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sheets of igneous rock. They are among the most extensive igneous features on Earth,[citation needed] in the form of dikes, laccoliths, cone sheets and...

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Sheet metal

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Sheet metal is metal formed into thin, flat pieces, usually by an industrial process. Thicknesses can vary significantly; extremely thin sheets are considered...

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Subvolcanic rock

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subvolcanic rocks are diabase, quartz dolerite, microgranite, and diorite. Cone sheet Dike (geology) Igneous intrusion Sill (geology) "7 Plutons and Plutonic...

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Ring dike

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felsite, with phenocrysts of alkali feldspar and mafic minerals. Batholith Cone sheet Fissure vent Laccolith Billings, Marland P. "Section of Geology and Mineralogy:...

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Cinder cone

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A cinder cone (or scoria cone) is a steep conical hill of loose pyroclastic fragments, such as volcanic clinkers, volcanic ash, or scoria that has been...

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Hyperboloid

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parametric representation includes hyperboloids of one sheet, two sheets, and their common boundary cone, each with the z {\displaystyle z} -axis as the axis...

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Kilchoan

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of the village. Examples of a type of igneous rock structure called a cone sheet are found at Kilchoan. Below the slope north-west of the village street...

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Dardanelles Cone

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Data Sheet. National Geodetic Survey, National Oceanic and Atmospheric Administration, United States Department of Commerce. "Dardanelles Cone, California"...

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Geology of the Canary Islands

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deposited ignimbrites). In central Gran Canaria, Tejeda caldera and a cone sheet swarm were formed in this phase. From 8.5 to 5.3 Ma, in the erosional...

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Countersink

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countersink is a cone-shaped tool with a cutting edge provided by a hole that goes through the side of the cone. The intersection of the hole and cone form the...

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Cinder Cone and the Fantastic Lava Beds

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Cinder Cone is a cinder cone volcano in Lassen Volcanic National Park within the United States. It is located about 10 mi (16 km) northeast of Lassen...

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Ruled surface

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lies on S. Examples include the plane, the lateral surface of a cylinder or cone, a conical surface with elliptical directrix, the right conoid, the helicoid...

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Caldera

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rocks. The caldera is surrounded by an outflow sheet of ash flow tuff (also called an ash flow sheet). If magma continues to be injected into the collapsed...

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Mount Edziza volcanic complex

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cinder cones, namely Eve Cone, Storm Cone, Moraine Cone, Williams Cone, Sleet Cone, Twin Cone, Sidas Cone and the three Triplex Cones. Five named cones occur...

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Conical hill

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A conical hill (also cone or conical mountain) is a landform with a distinctly conical shape. It is usually isolated or rises above other surrounding foothills...

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Golden hat

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So far, four such objects ("cone-shaped gold hats of the Schifferstadt type") are known. The objects are made of thin sheet gold and were attached externally...

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Carbon nanocone

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carbon cone can be modeled as a wrapped graphene sheet. In order to have strain-free, seamless wrapping, a sector must be cut out of the sheet. That sector...

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Quadric

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conjugate parallel planes, a reducible quadric). In one case, the imaginary cone, there is a single point ( ε 1 = 1 , ε 2 = 0 {\displaystyle \varepsilon _{1}=1...

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Carbonatite

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of calcite-rich igneous rocks in form of volcanic necks, dykes, and cone-sheets. These generally occur in association with larger intrusions of alkali-rich...

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North Atlantic Igneous Province

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Cenozoic. Individual central complexes developed with arcuate intrusions (cone sheets, ring dikes and stocks), the intrusions of one centre cut through earlier...

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Color blindness

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or variation in the functionality of one or more of the three classes of cone cells in the retina, which mediate color vision. The most common form is...

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Mount Takahe

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on its lower flanks, with three cinder cones found on the western and southern slopes. One of these cinder cones has been described as a subdued 100-metre-wide...

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Golden Hat of Schifferstadt

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four similar artifacts known as the Golden hats, all cone-shaped Bronze Age head-dresses made of sheet gold. The Schifferstadt specimen is the oldest of...

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Dirt cone

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as a single cone or as multiple cones in a ridge on moraine deposits. Generally, there are many cones on a glacier, snow patch, or ice sheet. They may be...

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