Examples of 'felsic' in a sentence
Meaning of "felsic"
Felsic is a term used in geology to describe igneous rocks that are rich in feldspar and silica. In English, it is used to classify different types of rocks based on their mineral composition
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- Enriched in the lighter elements such as silicon, oxygen, aluminium, sodium, and potassium.
- A rock with such properties.
How to use "felsic" in a sentence
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felsic
The most common felsic rock is granite.
Thus it is often a subsolidus process in supercooler felsic rocks.
Effusive felsic lava flows elongate several kilometres long.
The second type is a complex of felsic magmatic rocks.
Granodiorite is felsic to intermediate in composition.
Felsic plutonic rocks are the most common and widespread.
These systems are commonly associated with intermediate or felsic intrusions.
Archean felsic volcanic activities commonly occur in submarine environments.
Lava domes are formed by the extrusion of viscous felsic magma.
Felsic volcanic and pyroclastic rocks are considered to be the source for the detritus.
Massive sulphide deposits are closely associated with felsic volcanism.
Felsic pyroclastic volcanism was periodically synchronous with epiclastic sedimentation but only rarely dominated.
Selected metamorphic rocks vary in composition from felsic to mafic.
Obsidian is produced when felsic lava extruded from a volcano cools rapidly with minimal crystal growth.
This sequence is structurally overlain by a mafic and felsic volcanic unit.
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Felsic granitoids are the most prevalent rock type in Archean terranes.
The rock texture thus determines the basic name of a felsic rock.
The mineralized zones are mainly associated with felsic volcanics with a particular chemical signature.
Continental crust has the highest amount of silicon such rock is called felsic.
Cummingtonite has also been found in some felsic volcanic rocks such as dacites.
The cooling behaviour of intermediate magmas lie somewhere between those of mafic and felsic magmas.
Felsic to intermediate stratovolcano complexes are preserved intermittently along the GBMZ.
These parallel shear zones formed between more competent felsic porphyry dikes.
The remanent magnetization of the felsic dikes is carried by PSD magnetite and hematite.
Magmas compositions can range the entire spectrum between felsic and mafic.
Felsic pyroclastic rocks in the Long Reach area make the suite bimodal.
Titanite occurs as a common accessory mineral in intermediate and felsic igneous rocks and associated pegmatites.
Early Proterozoic felsic volcanic rocks occur in southeast South Dakota.
Several holocene eruptions have originated from the summit crater and have produced felsic material.
In strongly fractionated felsic magma, zircon is easily saturated.
The source of the Mn supply has been identified geochemically being related to felsic rocks.
It is a felsic gneiss that contains massive pyrite ± chalcopyrite stringers.
Gold Bug is characterized by a complex network of quartz veins in a felsic porphyry intrusive.
In the felsic bands of orthognaisses and metatexites, a metamorphic mineralogy of amph.
The Townsite Formation consists of rhyodacite breccias interbedded with felsic tuffs and pillowed dacites.
The felsic dykes are undeformed, thus younger than the metamafic dykes.
Intervals showing disseminated pyrite All nine drill holes intersected the targeted felsic porphyry intrusion.
Felsic microgranular enclaves, with ellipsoidal shapes and compositions slightly less evolved th.
The inclusions are sometimes surrounded by up to 3 centimeter wide felsic rims.
Igneous rocks are restricted to a swarm of thin felsic dykes of calc-alkaline affinity.
Felsic rocks are usually light in color and have specific gravities less than 3.
Pre-caldera products are dominated by felsic lava flows and domes.
In rare cases, felsic rocks become sulfur saturated and form sulfide segregations.
This leads to significant extraction of hydrous felsic melts from granulite-facies resitites.
Several felsic dome / silica breccia complexes have been located throughout the property.
Why is compositional layering a common feature of mafic plutons but not of felsic plutons?
Sanidine is found most typically in felsic volcanic rocks such as obsidian, rhyolite and trachyte.
The volcaniclastic rocks of the formation include hyaloclastite breccias, peperites and felsic ignimbrites.
Additionally, and of particular significance, felsic intrusives have been mapped in the recently trenched area.
The mineral occurs mainly in metamorphosed clay-rich sediments and felsic igneous rocks.
