Video: Dab tsi schist yuav tsim los ntawm shale?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Schist . Schist yog nruab nrab qib metamorphic pob zeb, tsim los ntawm metamorphosis ntawm mudstone / shale , los yog qee hom pob zeb igneous, mus rau qib siab dua slate, piv txwv li nws tau raug kub siab dua thiab siab dua.
Hauv qhov no, cov pob zeb metamorphic tuaj yeem tsim los ntawm shale?
Shales uas raug tshav kub thiab siab ntawm metamorphism hloov mus rau hauv ib qho nyuaj, fissile, metamorphic pob zeb lub npe hu ua slate. Nrog txuas ntxiv nce hauv metamorphic qib qhov sib lawv liag yog phyllite, ces schist thiab thaum kawg gneiss.
Tsis tas li ntawd, schist tig mus rau dab tsi? Tsim. Thaum lub sij hawm metamorphism, pob zeb uas yog keeb kwm sedimentary, igneous lossis metamorphic yog hloov mus ua schists thiab gneisses. Ib qho quartz-porphyry, piv txwv li, thiab cov nplua nuj feldspathic sandstone, tuaj yeem yog ob qho tib si. hloov mus rau hauv grey los yog liab mica- schist.
Ib yam li ntawd, tej zaum koj yuav nug, qhov twg yog schist tsim nyob rau hauv lub ntiaj teb daim tawv nqaij?
Geologic kev ua si uas ua rau thaj tsam roob yog hu ua lub cheeb tsam metamorphism, thiab Channel Islands yog qhov kev nthuav qhia zoo heev ntawm cov txheej txheem no. Catalina Schist yog tsim txog 15-30 km tob hauv lub Lub ntiaj teb crust nyob rau hauv nruab nrab siab thiab nruab nrab kub.
Dab tsi yog qhov sib txuas ntawm shale slate phyllite schist thiab gneiss?
Qhov zoo tshaj plaws paub thiab feem ntau pom cov pob zeb metamorphic yog cov tsim los ntawm Barrovian (tseem hu ua regional) metamorphism. Pib nrog a shale niam txiv, Barrovian metamorphism tsim ib ntu ntawm cov pob zeb metamorphic uas dhau mus slate , thiab tom qab ntawd dhau los phyllite , schist, thiab gneiss.
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