pob zeb Porphyritic tej zaum yuav yog pob zeb aphanites lossis pob zeb extrusive, nrog cov pob zeb loj lossis cov phenocrysts ntab hauv cov av nplua nuj hauv av Cov matrix lossis cov pob zeb hauv av yog cov khoom zoo tshaj plaws ntawm cov khoom uas loj dua. nplej, crystals los yog clasts yog embedded. Lub matrix ntawm lub pob zeb igneous muaj cov finer-grained, feem ntau microscopic, muaju nyob rau hauv uas loj crystals (phenocrysts) yog embedded. https://en.wikipedia.org › wiki › Matrix_(geology)
Matrix (geology) - Wikipedia
ntawm cov pob zeb uas tsis pom, zoo li hauv cov pob zeb porphyritic bas alt, lossis phanerites lossis cov pob zeb intrusive, nrog cov muaju ntawm cov av nplaum yooj yim sib txawv ntawm lub qhov muag, tab sis ib pawg ntawm cov muaju …
Puas yog porphyritic intrusive?
Porphyritic kev ntxhib los mos yog ib qho kev ntxhib los mos ntau heev hauv cov pob zeb uas tsis muaj zog uas muaj cov muaju loj (phenocrysts) tau muab tso rau hauv cov khoom zoo-grained. Porphyry yog ib lub pob zeb uas tsis muaj zog uas muaj cov muaju loj (phenocrysts) nyob rau hauv cov hmoov nplej zoo. … Muaj tseeb porphyry raws li kev txhais lus no yog ib pob zeb intrusive.
Puas yog pob zeb igneous porphyritic?
Intrusive rocks form plutons thiab thiaj li tseem hu ua plutonic. Lub pluton yog lub cev pob zeb uas tsis muaj zog uas tau txias hauv lub pob zeb. Thaum magma txias nyob rau hauv lub ntiaj teb, qhov txias pib maj mam. Kev ua kom txias qeeb tso cai rau lub sijhawm rau cov pob zeb loj tuaj, yog li cov pob zeb tsis pom kev nkag mus tau pomsiv lead ua.
pob zeb dab tsi yog porphyritic?
Porphyritic kev ntxhib los mos yogigneous pob zeb kev ntxhib los mosnyob rau hauv uas cov muaju loj yog teem rau hauv cov hmoov nplej zoo los yog iav hauv av. Porphyritic textures tshwm sim nyob rau hauv ntxhib, nruab nrab thiab nplua-grained igneous pob zeb. Feem ntau cov crystals loj dua, hu ua phenocrysts, tsim ua ntej hauv crystallisation ib ntus ntawm magma.
hom pob zeb twg muaj kev cuam tshuam?
Intrusive, los yog plutonic, pob zeb tsis muaj zog cov ntaub ntawv thaum magma nkag mus tob rau hauv lub ntiaj teb.
