Porphyritic kev ntxhib los mos - andesite: Qhov no yog ib qho extrusive igneous pob zebCov magma uas nws tsim txias maj mam rau ib pliag tob hauv qab ntawm qhov chaw (ua cov pob zeb loj), ces Ua tiav txias sai heev thaum nws tawm ntawm qhov chaw, tsim cov hmoov av zoo.
Puas yog porphyritic intrusive thiab extrusive?
Porphyry yog lub pob zeb tsis pom kev uas muaj cov pob zeb loj dua (phenocrysts) hauv cov av nplaum zoo. … Qhov tseeb porphyry raws li kev txhais lus no yog ib lub pob zeb intrusive. Extrusive (lava) pob zeb tej zaum yuav muaj porphyritic kev ntxhib los mos tab sis nws yuav tsum muaj lub npe porphyritic pob zeb, tsis yog porphyry 3
Puas yog porphyritic intrusive?
Nov yog pob zeb porphyritic. … Ib tug porphyritic volcanic xuab zeb lis, raws li pom nyob rau hauv lub petrographic microscope. Cov nplej loj hauv nruab nrab yog cov chav sib txawv ntau dua li cov koob me me zoo li cov muaju nyob ib puag ncig nws.
Yuav ua li cas cov pob zeb igneous yog porphyritic?
Kev piav qhia: Ib qho kev ntxhib los mos porphyritic yog ib qho uas muaj cov muaju loj (phenocrysts) hauv cov av loj (aphanitic part). Yog li, ntau pob zeb yog porphyritic: andesite, granite thiab txawm tias qee qhov bas alts.
pob zeb porphyritic tsim li cas?
A porphyritic kev ntxhib los mos yog tsim thaum magma uas tau maj mam txias thiab crystallising nyob rau hauv lub ntiaj teb lub crust yog dheev erupted nyob rau saum npoo, ua rau cov seem uncrystallised magma kom txias saiQhov kev ntxhib los mos yog yam ntxwv ntawm feem ntau pob zeb volcanic. … Qhov kev ntxhib los mos no nthuav tawm los ntawm qee cov pob zeb volcanic.
