Marble yog pob zeb siv dav hauv cov tsev, monuments, thiab sculptures. Nws muaj qhov tseem ceeb ntawm calcite lossis dolomite, los yog kev sib xyaw ntawm cov carbonate cov zaub mov. Feem ntau marble ntawm kev lag luam tus nqi tau tsim nyob rau hauv lub Paleozoic Era los yog ua ntej lub sij hawm Precambrian.
Thaum twg lub pob zeb marble nrhiav tau?
1874: Sylvester Richardson, tus kws tshawb fawb thiab tus tsim ntawm Gunnison, tau mus xyuas qhov chaw tam sim no ntawm Marble thiab pom cov pob zeb marble.
Dab tsi yog pob zeb qub yog marble?
Marble. Thaum limestone, pob zeb sedimentary, tau faus tob rau hauv lub ntiaj teb rau ntau lab xyoo, qhov kub thiab siab tuaj yeem hloov mus rau hauv cov pob zeb metamorphic hu ua marble. Marble muaj zog thiab tuaj yeem polished kom zoo nkauj luster.
pob zeb marble hnub nyoog pes tsawg?
Cov pob zeb Paleozoic (los ntawm 251 lab rau 542 lab xyoo hauv hnub nyoog) ntawm Tebchaws Askiv, piv txwv li, suav nrog "madrepore marbles" nplua nuj nyob rau hauv pob txha pob txha thiab "encrinital marble" muaj crinoid qia thiab caj npab daim hlau nrog cov yam ntxwv ncig hla ntu.
Vim li cas marble tsim?
Nws tsim li cas? Marble cov ntaub ntawv thaum lub pob zeb limestone uas twb muaj lawm tau ua kom sov rau qhov kub siab heev uas cov zaub mov loj dua thiab sib xyaw ua ke. Qhov tsaus nti, foliated bands txiav los ntawm marble yog ntau hom metamorphic pob zeb, xws li slate.
