Limestone thiab sandstone yog ob hom pob zeb sedimentary uas feem ntau pom thoob ntiaj teb. Thaum lawv sib koom ntau qhov sib xws, muaj qee qhov sib txawv tseem ceeb ntawm ob, suav nrog lawv qhov nyuaj.
qhov sib txawv ntawm limestone thiab sandstone
Moca cream limestone
Limestone feem ntau suav hais tias yog lub pob zeb nyuaj. Nws yog tsim los ntawm calcium carbonate feem ntau, uas yog ib qho ntxhia uas nyob ib ncig ntawm 3 ntawm Mohs nplai ntawm hardness. Qhov no txhais tau hais tias limestone tuaj yeem tiv taus qhov hnav thiab tsim kua muag yam tsis tau tawg yooj yim heev. Qhov tseeb, limestone feem ntau yog siv rau hauv cov haujlwm tsim kho vim nws lub zog thiab kav ntev.
Beige Sandstone
Sandstone, ntawm qhov tod tes, nyhav me ntsis softer li limestone. Nws yog tsim los ntawm cov nplej ntawm cov xuab zeb thiab lwm yam minerals uas tau compacted dhau sij hawm. Sandstone feem ntau nyob ib ncig ntawm 6 ntawm Mohs nplai ntawm hardness, uas ua rau nws yooj yim dua rau khawb thiab yaig dua li limestone.
Uas tau hais tias, nws yog ib qho tseem ceeb kom nco ntsoov tias qhov hardness ntawm limestone thiab sandstone tuaj yeem sib txawv nyob ntawm ntau yam, nrog rau lawv lub hnub nyoog, cov xwm txheej uas lawv tau tsim, thiab cov zaub mov uas lawv muaj. Feem ntau, ob qho tib si ntawm cov pob zeb no yog qhov nyuaj thiab ruaj khov, ua rau lawv zoo tagnrho rau kev siv ntau yam kev siv.
Yog li, yog limestone nyuaj dua sandstone? Nws yog ib qho nyuaj rau hais kom meej, vim muaj ntau yam sib txawv uas tuaj yeem cuam tshuam cov txheeb ze hardness ntawm ob hom pob zeb no. Txawm li cas los xij, ob qho tib si limestone thiab sandstone feem ntau suav hais tias yog cov khoom siv ruaj khov thiab muaj zog uas tuaj yeem tiv taus ntau yam hnav thiab tsim kua muag, ua rau lawv xaiv zoo rau txhua yam ntawm cov khoom siv hauv tsev mus rau cov khoom siv zoo nkauj.
