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hornfels::noun | Spocien Dictionary
| Type | Words |
|---|---|
| Synonyms | hornstone |
| Type of | metamorphic rock |
Examples of hornfels
hornfels
The Langer Hals takes the Bode around a hard rock mass made of hornfels and diabase.
From the en.wikipedia.org
It is especially common in hornfels produced by contact metamorphism of pelitic rocks.
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Closely adjacent country rocks were metamorphosed to hornfels.
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The light-coloured granite stands out from the dark to black coloured rocks of hornfels and argillite.
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Contact metamorphic rocks are usually known as hornfels.
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The surrounding Pittman formation rocks have been metamorphosed in a contact aureole to hornfels and spotted schist.
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Granites sometimes occur in circular depressions surrounded by a range of hills, formed by the metamorphic aureole or hornfels.
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Lower pressure, normally contact metamorphism produces albite-epidote hornfels while higher pressures at great depth produces eclogite.
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Gold mineralization occurs in quartz veins hosted within deformed gabbro and microgranite dikes and sills intruding biotite-cordierite hornfels.
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- A fine-grained metamorphic rock formed by the action of heat on clay rocks
- Hornfels (German, meaning "hornstone," after its frequent association with glacial "horn peaks" in the Alps, being a very hard rock and thus more likely to resist glacial action and form horn-shaped peaks such as Matterhorn) is the group designation for a series of contact metamorphic rocks that ...
- A high-temperature, low-pressure metamorphic rock of uniform grain size showing no foliation. Usually formed by contact metamorphism.
- Fine-grained, gray-green metamorphic rock produced by "baking" of sedimentary rocks by an igneous intrusion in which sedimentary features may still be preserved.
- A dense, compact rock produced from slate by contact with an intrusion, especially of granite.
- A fine-grained rock with a mosaic of equidimensional grains.
- A hard, dark-colored, dense metamorphic rock that forms from the intrusion of magma into shale or basalt.
