xenolith

(redirected from xenocryst)
Also found in: Dictionary, Encyclopedia, Wikipedia.
Graphic Thesaurus  🔍
Display ON
Animation ON
Legend
Synonym
Antonym
Related
  • noun

Words related to xenolith

(geology) a piece of rock of different origin from the igneous rock in which it is embedded

Related Words

References in periodicals archive ?
Few olivine crystals can be identified in the thin section and they show oxidized rounded borders and alteration to iddingsite, suggesting that they may be xenocrysts instead of phenocrysts from the new batch of magma.
A second data set comes from a xenocryst in the Orano porphyry, a unit characterized by extensive captured crystals from the Monte Capanne system (Dini et al.
The relatively coarse grain size of xenoliths and xenocrysts indicate origin from subjacent plutonic sources, and the gabbro of Christmas Mountain and syenitic rocks of Dominguez Mountain show that such plutons exist in the Big Bend region.
The KL-2 pipe, meanwhile, is a multiphase diatreme facies complex with at least four distinct phases of tuffistic (volcaniclastic) serpentine kimberlite breccia which, again, are locally rich in mantle xenoliths and xenocrysts.
Xenocrysts in the 1723 scoria are unrimmed euhedral hornblende crystals, indicating a rapidly ascended magma of a few days or hours (Fig.
The dyke contains abundant large (up to at least 9 cm) phenocrysts and xenocrysts in addition to a wide variety of xenoliths that include granulite, dunite, lherzolite, werhlite, harzburgite, and pyroxene peridotite (Ross et al.
2004, Discovery of Archean continental and mantle fragments inferred from xenocrysts in komatiites, the Belingwe greenstone belt, Zimbabwe: Geology, v.
The latter occurrence probably represent xenocrysts.
Additionally, limited exchange of xenocrysts (labradorite, edenitic amphibole, and bronzite in dacites, oligoclase and andesine in andesitic enclaves) might have occurred during this entrainment stage.
The presence of ferrous clinopyroxene cores suggests xenocrysts removed from diferentiated magmas while unusual occurence of acmite in basaltic rocks emphazises their strong peralkaline evolution.