Video: Yuav ua li cas slate phyllite thiab schist txawv ntawm ib leeg?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Schist yog ib lub pob zeb metamorphic nrog zoo-tsim foliation. Nws feem ntau muaj qhov tseem ceeb ntawm mica uas tso cai tus pob zeb rau faib ua nyias nyias. Nws yog pob zeb ntawm qib nruab nrab metamorphic qib ntawm phyllite thiab gneiss. Slate yog ib lub pob zeb foliated metamorphic uas yog tsim los ntawm tus metamorphism ntawm shale.
Kuj nug, qhov txawv ntawm slate phyllite thiab schist yog dab tsi?
Nws yog tsim los ntawm quartz, sericite mica, thiab chlorite. Phyllite muaj cov nplua nuj mica flakes hauv a nyiam orientation, whereas slate muaj cov mica flakes zoo heev uas ua tau raws li qhov xav tau, thiab schist muaj mica flakes loj hauv a nyiam kev taw qhia.
Qhov thib ob, qhov txawv ntawm gneiss thiab schist yog dab tsi? Schist thiab gneiss yog ob qho tib si metamorphic pob zeb. Schist tsis yog ntxhib grained li gneiss , thiab gneiss muaj feldspar minerals ntau dua li nws ua mica minerals. Schist tsis yog ntxhib grained li gneiss , thiab gneiss muaj feldspar minerals ntau dua li nws ua mica minerals.
Tsis tas li lo lus nug yog, slate phyllite schist thiab gneiss cuam tshuam li cas?
Slate yog ib yam khoom ntawm cov qib qis metamorphism (tsis yog qhov kub thiab txias heev yuav tsum tau faus). Schist thiab gneiss yog tsim los ntawm nruab nrab mus rau qib siab metamorphism. Hauv qee kis gneisses yog tsim los ntawm qib siab metamorphism dua cov schists.
Qhov twg yog qhov siab los ntawm qhov kev hloov shale rau hauv slate?
Slate yog ib tug metamorphic pob zeb nws yog semi impermeable thiab nyuaj. Siab compacts cov shale rau hauv slate thiab cua sov ua rau lub pob zeb.
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