Xiav Limestone Vuas

Xiav Limestone Vuas

Nws tsim los li cas?

Limestone tau tsim ua ob txoj hauv kev.

Nws tuaj yeem tsim nrog kev pab los ntawm cov kab mob muaj sia thiab los ntawm kev nqus dej.

Cov dej nyob hauv dej hiav txwv xws li oysters, clams, mussels, thiab coral siv calcium carbonate (CaCO3) pom hauv dej hiav txwv los tsim lawv cov plhaub thiab pob txha. Raws li cov kab mob no tuag, lawv lub plhaub thiab cov pob txha tau tawg los ntawm nthwv dej thiab tsaws rau hauv dej hiav txwv hauv av uas lawv tau sib sau ua ke ntau plhom xyoo, tsim cov pob zeb lim dej los ntawm cov av thiab cov dej hauv dej.

Qhov thib ob txoj kev limestone yog tsim thaum cov dej uas muaj cov calcium calcium carbonate yaj, tawm hauv qab cov av tso. Cov dej siab ua kom cov av qis, tsim cov limestone.

Thaj tsam ib ncig ntawm Great Lakes, xws li Michigan, Indiana, thiab Illinois, muaj cov pob zeb loj heev. Cov kws tshawb fawb siv qhov no nrog rau cov pov thawj ntawm cov pob txha los ua pov thawj tias nyob rau ib lub sijhawm thaj chaw nyob hauv qab dej, uas tau tsim ntau cov pob zeb.

Nws zoo li cas?

Vim tias limestone feem ntau tsim los ntawm cov plhaub thiab cov pob txha, nws yog lub teeb xim zoo li dawb, ziab, lossis txho.

Cov xim limestone nyob ntawm lwm cov dej hauv cov dej sib tov ntxiv rau cov ntxhia calcite, uas yog dawb; impurities xws li xuab zeb, av nplaum, thiab cov khoom siv organic tseem muaj nyob hauv cov limestone thiab cuam tshuam rau xim.

Muaj ob peb txoj hauv kev los paub limestone. Ua ntej tshaj plaws, nws yog pob zeb mos mos thiab thaum nws khawb nrog cov khoom ntse, nws dhau los ua hmoov dawb.

Thaum limestone tuaj ntsib nrog cov kua qaub xws li kua txiv los yog hydrochloric acid (HCl), lub pob zeb yuav ua npuas thiab ua rau tsis zoo thiab tom qab ntawd ua rau cov kua qaub nyob nruab nrab.

Nws siv rau dab tsi?

Limestone muaj keeb kwm heev. Ntev dhau los, limestone tau siv los tsim cov pyramids hauv Egypt. Thiab Loos yuav sib xyaw limestone nrog tshauv hluav taws los tsim ib hom kev ua vaj tse rau kev tsim vaj tsev hauv Rome.

Limestone yog ib qho tseem ceeb rau kev ua cov cement, tab sis nws kuj tseem muaj nyob hauv lwm qhov kev lag luam xws li kev kho kom qab zib, ua iav, thiab tawv tawv.

Rhuav limestone hauv qab txoj kev thiab hauv qab txoj kev tsheb ciav hlau. Thaum limestone ua kom sov, nws pab tsim cov hlau thiab hlau ntxiv rau alumina thiab magnesia.

Limestone pab ntxuav cov dej haus thiab kho cov dej phwj tuaj. Cov neeg ua liaj ua teb feem ntau yuav nthuav tawm cov chiv uas muaj hauv av-limestone ntawm lawv cov qoob loo. Cov limestone hauv kev sib xyaw yog qhov chaw ntawm cov as -ham cog thiab ua kom cov av acidity tsawg.

Vim nws yog pob zeb softer, nws yooj yim carved. Limestone tshwm hauv ntau lub tsev. Indiana limestone, tseem hu ua Salem limestone, tuaj yeem nrhiav tau ntawm Lub Tebchaws

Lub Xeev Lub Tsev hauv New York City thiab ntawm US Holocaust Memorial thiab Tsev khaws puav pheej hauv Washington DC

Hom Limestone

Coquina:Limestone uas muaj qhov loj ntawm cov plhaub los yog coral

Chalk: CovLimestone uas tau tsim los ntawm cov kab mob me me

Travertine:Limestone tsim nyob ib ncig ntawm lub caij nplooj ntoo hlav lossis dej tsaws tsag

Oolite:Limestone uas tau tsim nyob ib puag ncig thaj chaw kub thiab txias xws li hiav txwv dej hiav txwv lossis pas dej

Txaus siab rau nws lawm?

Tiv tauj peb.

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