| 词汇 | hornfels |
| 释义 | BETA Examples of hornfelshornfels isn’t in the Cambridge Dictionary yet. You can help! The rock fragments are mainly rhyolite, granite, and spherulite of rhyolite, with very small amounts of muscovite-quartz schist and hornfels exhibiting a granoblastic texture. Two basic hornfels samples lie off the main trend, while sample 80-6e shows anomalous behaviour. A second great group of hornfels are the calcite-silicate hornfels that arise from the thermal alteration of impure limestone. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They are excessively variable in their mineralogical composition, and very often alternate in thin seams with biotite hornfels and indurated quartzites. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is composed of igneous rock and hornfels. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Skarns must also be distinguished from calc-silicate hornfels, usually by field relationships. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It occurs in hornfels and siliceous marble xenoliths within and adjacent to a nepheline syenite intrusion. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A contact aureole of 2.5 km thickness surrounds the batholith in the form of albite epidote hornfels. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Others have as centers a foreign fragment such as gneiss or hornfels, with one or more zones, pale or dark, around this. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is a hornfels developed from calcareous mudstone. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Lower pressure, normally contact metamorphism produces albite-epidote hornfels while higher pressures at great depth produces eclogite. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The baked rock is most prominent within a few hundred feet of the intrusion, appearing as a dark gray hornfels. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. |
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