Video: Porphyry pob zeb yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Porphyry yog ib lub sij hawm textural rau lub pob zeb uas tsis muaj pob zeb uas muaj cov pob zeb loj xws li feldspar lossis quartz dispersed nyob rau hauv nplua-grained silicate nplua nuj, feem ntau aphanitic matrix los yog groundmass. Qib "Imperial". porphyry yog li ntawd tau txais txiaj ntsig zoo rau monuments thiab tsim cov haujlwm hauv Imperial Rome thiab tom qab ntawd.
Ib yam li ntawd, nws tau nug, qhov twg porphyry pom?
Niaj hnub Porphyry Quarries Porphyry tam sim no quarried nyob rau hauv ntau lub teb chaws suav nrog Ltalis (ze Trentino raws li qhia ntawm txoj cai), Argentina thiab Mexico. Porphyry yog khoom plig rau nws zoo compressive zog thiab exceptional durability. Vim li no nws yog tam sim no feem ntau siv los ua paving pob zeb.
Ib tug kuj yuav nug, porphyry zoo li cas? Porphyry . Porphyry yog ib lub pob zeb uas tsis muaj zog uas muaj porphyritic kev ntxhib los mos. Porphyritic kev ntxhib los mos yog ib qho kev ntxhib los mos heev nyob rau hauv cov pob zeb igneous nyob rau hauv uas loj muaju (phenocrysts) yog embedded nyob rau hauv ib tug nplua-grained groundmass. Porphyry yog ib lub pob zeb uas tsis muaj zog uas muaj cov muaju loj (phenocrysts) nyob rau hauv cov hmoov nplej zoo.
Ib yam li ntawd, tib neeg nug, qhov txawv ntawm porphyry thiab granite yog dab tsi?
Granite yog ib qho nyuaj heev, granular, crystalline igneous pob zeb uas muaj feem ntau ntawm quartz, mica, thiab feldspar thiab feem ntau yog siv los ua lub tsev pob zeb. Porphyry yog xim liab-xim av rau ntshav igneous pob zeb uas muaj phenocrysts loj ntawm ntau yam minerals embedded hauv a nplua-grained matrix.
Puas yog porphyry intrusive lossis extrusive?
Andesite porphyry los ntawm qhov ua siab tshaj ntawm O'Leary Peak. Qhov no yog ib qho extrusive pob zeb porphyritic pob zeb, raws li cov paj yeeb (thiab dub) phenocrysts pom meej meej, nyob rau hauv sib piv rau grey groundmass nrog nws cov microscopic crystals. Porphyritic kev ntxhib los mos hauv granite. Qhov no yog ib qho cuam tshuam porphyritic pob zeb.
Pom zoo:
Dab tsi yog qhov txawv ntawm cov pob zeb tsis foliated thiab foliated metamorphic pob zeb?
Foliated metamorphic pob zeb xws li gneiss, phyllite, schist, thiab slate muaj ib txheej txheej los yog banded zoo li uas yog tsim los ntawm raug tshav kub thiab qhia siab. Non-foliated metamorphic pob zeb xws li hornfels, marble, quartzite, thiab novaculite tsis muaj txheej txheej lossis banded zoo li
Dab tsi yog pob zeb tsim cov ntxhia pob zeb?
Cov pob zeb tsim cov zaub mov yog: feldspars, quartz, amphiboles, micas, olivine, garnet, calcite, pyroxenes. Minerals tshwm sim nyob rau hauv ib lub pob zeb nyob rau hauv me me yog hu ua "accessory minerals"
Lub npe rau lub pob zeb nruab nrab ntawm cov pob zeb uas txias heev yog dab tsi?
Extrusive igneous pob zeb
Dab tsi yog cov pob zeb niam txiv ntawm cov pob zeb metamorphic?
Metamorphic pob zeb Metamorphic pob zeb Texture Niam txiv pob zeb Phyllite Foliated Shale Schist Foliated Shale, granite thiab volcanic pob zeb Gneiss Foliated Shale, granite thiab volcanic pob zeb Marble Nonfoliated Limestone, dolostone
Dab tsi ntawm pob zeb ua rau ib qho chaw pob zeb?
Sedimentary pob zeb