TRONDHJEMITE Meaning and
Definition
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Trondhjemite is a noun and a type of igneous rock characterized by its composition and texture. It is derived from the Norwegian city of Trondheim, where it was first discovered and named. Trondhjemite belongs to the granitic rock family and is commonly found in continental crusts and mountain ranges.
The composition of trondhjemite consists primarily of plagioclase feldspar, quartz, and minor amounts of biotite, hornblende, or muscovite. It often exhibits a porphyritic texture, meaning that it contains large crystals (phenocrysts) embedded in a fine-grained matrix. The phenocrysts are typically plagioclase feldspar crystals, while the groundmass consists of smaller plagioclase, quartz, and mica grains.
Trondhjemite is formed through the process of fractional crystallization, which occurs when magma cools slowly beneath the Earth's surface. As the magma cools and solidifies, certain minerals begin to crystallize, creating a layered structure within the rock. This process gives trondhjemite its characteristic composition and texture.
Due to its high silica content and mineral composition, trondhjemite is often associated with continental collision zones and areas of subduction. It is commonly found in regions with an extensive geological history, such as ancient mountain belts and island arcs.
In summary, trondhjemite is an igneous rock with a composition predominantly consisting of plagioclase feldspar, quartz, and minor amounts of other minerals. It is known for its porphyritic texture and is commonly found in continental crusts and mountainous regions.
Common Misspellings for TRONDHJEMITE
- rrondhjemite
- frondhjemite
- grondhjemite
- yrondhjemite
- 6rondhjemite
- 5rondhjemite
- teondhjemite
- tdondhjemite
- tfondhjemite
- ttondhjemite
- t5ondhjemite
- t4ondhjemite
- trindhjemite
- trkndhjemite
- trlndhjemite
- trpndhjemite
- tr0ndhjemite
- tr9ndhjemite
- trobdhjemite
- tromdhjemite
Etymology of TRONDHJEMITE
The word trondhjemite is derived from the name of the city Trondheim in Norway and the Greek suffix -ite, which is commonly used to name rocks and minerals. Trondhjemite is a type of granitic rock that was first described in the region around Trondheim. The name was coined by the Swiss petrologist Friedrich Johannsen in 1921, who used the older spelling of Trondhjem, referring to the city where the rock was initially discovered. Over time, the modern spelling of Trondheim has become more common, but the rock's name has retained the older spelling as trondhjemite.
