How To Use Xenolith In A Sentence
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The parental magma for pyroxenite xenoliths could be derived from the partial melting of the asthenosphere with continental crust material involvement and of the upper lithospheric mantle.
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- A fragment (or xenolith) of well mineralized intrusive within barren granodiorite was observed in drill hole MX07-03;
Undefined
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It is not known if these xenoliths are spilitic.
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The amphibolite xenoliths were from the upper part of lower crust and the lower part of middle crust, bring up to the shallow area of crust .
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Disintegration of the olivine-rich xenoliths probably accounts for much of the peridot found here, although many of the larger olivine grains occur as isolated anhedral grains embedded in the basalt.
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However, rare xenoliths of sedimentary rocks occur in the granite.
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Rare mafic enclaves, which include both xenoliths of country rock and magma pods more mafic than the host monzogranite, as well as schlieren, are parallel to this compositional banding.
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The basalt, inferred to be of Miocene age, appears to be an alkali basalt that contains xenoliths of ultramafic rocks (peridotite and pyroxenite) up to a few centimeters in size.
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Unless one got carried to the surface as a xenolith!
Firestorm
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Usurped the subtlety, the vulnerability of the egg and ham wedding, the pepper xenolith stood firm, yelled to the other flavors and claimed victory, zero-sum taste diplomacy.
Tabasco Revenge
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If the magma has risen quickly from the source region of the volcano, the xenoliths may represent country rock from all levels of the crust through which it has travelled.
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There are a lot of spinel - lherzolite xenoliths in the Taiyangshan Mesozoic basalt in Ningyuan, Hunan province.
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Xenoliths, which are pieces of wall rock, or xenocrysts, which are single mineral grains that originate from xenoliths, can commonly be recognized at outcrops of magmatic rocks.
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The granite contains abundant xenoliths of the country rock.
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Most of the xenoliths from the southern plug cluster show the development of small clinopyroxene crystals, and one xenolith contains small quantities of finely recrystallized olivine.
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- A fragment (or xenolith) of well mineralized intrusive within barren granodiorite was observed in drill hole MX07-03; - Disseminated molybdenite has recently been observed in intrusive rocks at the 805 mine level, currently below the Z zone described previously; and, - Strong quartz stockwork with molybdenite in biotite hornfels has been observed adjacent to the Ethel zone (Drill Hole MX07-01).
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- This diamond discovery was from a multi-phased xenolith-bearing lamprophyre dyke system, approximately 6 metres wide in its surface exposure.
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All three lithologies have abundant mantle xenoliths (eclogite, garnet lherzolite and garnet harzburgite) up to 20 cm in size and abundant mantle-derived garnets.
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According to the statistics of 2615 enclaves in 53 enclave observation spots, enclaves in Fangshan granodiorite are divided into two categories, xenolith enclave and microgranular enclave.
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And even in cases where volcanism has taken place, there are often older chunks of unmelted rock, called xenolithic inclusions, that can be identified within a lava flow and dated accurately.
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Xenoliths, which are pieces of wall rock, or xenocrysts, which are single mineral grains that originate from xenoliths, can commonly be recognized at outcrops of magmatic rocks.
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The tonalite is gneissic, banded on a decimetre scale, and loaded with discrete mafic enclaves, metasedimentary xenoliths and garnet, feldspar and rutile xenocrysts, such that the body has a migmatitic appearance.
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The dykes and sheets sharply truncate structures in the wall rock gneisses and greenstones, and large (several tens of metres) wall-rock xenoliths may be completely engulfed by the intrusive sheets.
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In similar contrast to the Okenyenya xenolith suite, lithologies such as wehrlite, eclogite and pyroxenite are also absent.
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In similar contrast to the Okenyenya xenolith suite, lithologies such as wehrlite, eclogite and pyroxenite are also absent.
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The odds against one of them getting picked up as a xenolith are probably astronomical.
Firestorm
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All three lithologies have abundant mantle xenoliths (eclogite, garnet lherzolite and garnet harzburgite) up to 20 cm in size and abundant mantle-derived garnets.
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In addition to scoria and ash, other volcanic ejecta include blocks, bombs, and xenoliths.
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this strikes me as patently false! known direct samples of the mantle at or near the moho are at slow spreading ridges (where both serpentinite and unhydrous mantle rocks are found) and by xenolith (to my knowledge, no serpentinite xenolith has ever been described).
At it Again
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- This diamond discovery was from a multi-phased xenolith-bearing lamprophyre dyke system, approximately 6 metres wide in its surface exposure.
Marketwire - Breaking News Releases
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Partial melting models, isotopic studies and the petrology of entrained ultramafic xenoliths suggest that many basanitic magmas are sourced in the asthenosphere.
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- A fragment (or xenolith) of well mineralized intrusive within barren granodiorite was observed in drill hole MX07-03; - Disseminated molybdenite has recently been observed in intrusive rocks at the 805 mine level, currently below the Z zone described previously; and, - Strong quartz stockwork with molybdenite in biotite hornfels has been observed adjacent to the Ethel zone (Drill Hole MX07-01).
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