Slate tuaj yeem siv rau hauv lub ru tsev, hauv pem teb, lub vaj thiab lwm qhov chaw, tab sis kuj yog lub pob zeb zoo nkauj, pob zeb ntuj yog ntau yam, dab tsi yog slate?Ntau tus neeg tsis paub ntau txog lub pob zeb no.slate tau los ua li cas?Tsis txhob txhawj.Wb tham txog nws.Cia peb saib.

Dab tsi yog slate?

Slate yog ib hom pob zeb metamorphic nrog cov qauv slate thiab tsis muaj recrystallization.Lub pob zeb qub yog argillaceous, silty lossis nruab nrab tuff, uas tuaj yeem raug stripped rau hauv cov ntawv nyias raws li cov kev taw qhia ntawm slate.Nws yog tsim los ntawm me ntsis metamorphism ntawm clayey, silty sedimentary pob zeb, intermediate-acid tuffaceous pob zeb thiab sedimentary tuffaceous pob zeb.
Vim lub cev qhuav dej, lub hardness ntawm thawj pob zeb yog kho kom zoo, tab sis cov ntxhia muaj pes tsawg leeg yeej tsis recrystallize.Nws muaj cov qauv metamorphic thiab cov qauv metamorphic, thiab nws cov tsos yog ntom thiab zais crystallization.Cov pob zeb hauv av yog qhov zoo heev, uas nyuaj rau kev paub qhov txawv ntawm qhov muag liab qab.Feem ntau muaj me me ntawm sericite thiab lwm yam minerals nyob rau saum npoo ntawm lub phaj, uas ua rau saum npoo ntawm lub phaj me ntsis silky.Slate feem ntau muaj npe nyob rau hauv kev nthuav dav raws li cov xim sib txawv, xws li dub carbonaceous slate thiab grey ntsuab calcareous slate.Hauv qib qis thermal contact metamorphism, cov pob zeb ntiav metamorphic nrog pom thiab cov qauv phaj tuaj yeem tsim tau, feem ntau hu ua "pob zeb pom".Slate tuaj yeem siv los ua cov khoom siv hauv tsev thiab cov khoom siv kho kom zoo nkauj.Nyob rau hauv ancient sij hawm, nws yog feem ntau siv raws li cov pobzeb nyob rau hauv cov cheeb tsam nplua nuj nyob rau hauv slate.

Ua li cas slate form?

Slate, zoo li sandstone, yog cov pob zeb sedimentary tsim los ntawm kev txav ntawm lub ntiaj teb thiab kev sib txuas ntawm cov xuab zeb thiab cov cement (siliceous teeb meem, calcium carbonate, av nplaum, hlau oxide, calcium sulfate, thiab lwm yam) nyob rau hauv lub sij hawm ntev. siab.Tam sim no, cov xim tseem ceeb yog lub teeb xiav, dub, lub teeb ntsuab, paj yeeb, xim av, lub teeb grey, daj thiab lwm yam.Slate tsis yog tsuas yog nplua nuj nyob rau hauv kev ntxhib los mos, tab sis kuj nyuaj, elegant xim, tsis tshua muaj dej nqus, tsis muaj hluav taws xob muaj kuab paug, nrog matt, anti-skid, acid thiab alkali tsis kam, hluav taws kub thiab txias, huab cua tsis kam, zoo crackability thiab lwm yam ntxwv.

Cov ntxhia muaj pes tsawg leeg feem ntau yog mica, ua raws li chlorite, quartz, ib qho me me ntawm pyrite thiab calcite.Cov slate tshiab muaj cov xuab zeb ntau dua, ntau calcium thiab pyrite, thiab nyuaj lithology.Lub cev ore yog calcareous sericite thiab silty sericite nrog ib txheej tuab ntawm 1-5 cm.
Cov pob zeb ntiav metamorphic yog tsim los ntawm me ntsis metamorphism ntawm clayey, silty sedimentary pob zeb, intermediate-acid tuffaceous pob zeb thiab sedimentary tuffaceous pob zeb.Dub los yog grey-dub.Lub lithology yog compact thiab lub phaj cleavage yog zoo tsim.Feem ntau muaj me me ntawm sericite thiab lwm yam minerals nyob rau saum npoo ntawm lub phaj, uas ua rau saum npoo ntawm lub phaj me ntsis silky.Tsis muaj qhov pom tseeb recrystallization.Microscopically, qee cov pob zeb hauv av, xws li quartz, sericite thiab chlorite, yog tsis sib xws, tab sis feem ntau ntawm lawv yog cryptocrystalline av nplaum ntxhia thiab carbonaceous thiab hlau hmoov.Nws muaj redundant qauv thiab pom cov qauv.
Cov pob zeb tseem ceeb nrog cov qauv phaj feem ntau yog pob zeb argillaceous, argillaceous siltstone thiab intermediate-acid tuff.Slate yog cov khoom lag luam qis hauv cheeb tsam metamorphism, thiab nws qhov kub thiab txias tsis sib xws tsis siab, uas feem ntau cuam tshuam los ntawm kev ntxhov siab.Lub lamellar cleavage metamorphic pob zeb nrog argillaceous thiab silty Cheebtsam raws li lub ntsiab Cheebtsam thiab argillaceous thiab silty Cheebtsam raws li lub ntsiab Cheebtsam yuav siv tau raws li lub tsev pob zeb, stele thiab inkstone.
Ntau xyoo dhau los, ntau qhov tseeb tau ua pov thawj tias pob zeb ntuj tau dhau los ua ib qho ntawm cov khoom siv hauv pem teb nrov tshaj plaws.Lawv muaj qee tus yam ntxwv zoo thiab tsim nyog rau cov ntaub ntawv hauv chav dej.Slate, raws li lub pob zeb ntuj, nws cov yam ntxwv ntawm lub hauv paus ua rau nws yog cov khoom siv hauv chav dej zoo tagnrho.