Calcareous pob zeb yog tsim los ntawm ntau yam tshuaj lom neeg thiab detrital sediments xws li limestone, dolostone, los yog marl thiab muaj ntau ntawm calcium oxide (CaO), magnesium oxide (MgO.), thiab carbon dioxide (CO2), nrog ntau npaum li cas ntawm txhuas, silicon, hlau, thiab dej.
pob zeb calcareous yog dab tsi?
Calcareous pob zeb yog feem ntau yog cov pob zeb carbonate, feem ntau limestone lossis dolostone. Feem ntau tsim nyob rau hauv ib qho chaw ruaj khov continental txee ib puag ncig raws li qhov tsis txaus ntseeg. Tej zaum lawv yuav yog cov carbonate ntshiab, los yog lawv yuav muaj ntau qhov sib txawv ntawm lwm cov precipitates (xws li chert lossis hematite) lossis cov khoom siv detrital (xuab zeb, av nplaum, thiab lwm yam)
pob zeb calcareous pom nyob qhov twg?
Marine sediments
Calcareous sediments feem ntau tso hauv dej ntiav ze av, vim cov carbonate yog precipitated los ntawm marine organisms uas xav tau av-derived as-ham. Feem ntau hais lus, qhov deb ntawm av sediments poob, qhov tsawg calcareous lawv.
Cov piv txwv pob zeb calcareous yog dab tsi?
(ii) Calcareous Pob Zeb:
Cov piv txwv zoo tshaj plaws ntawm calcareous lossis carbonate pob zeb yog LIMESTONES, DOLOMITES, thiab MARBLES.
Limestones tsim li cas?
Limestone yog tsim nyob rau hauv ob txoj kev. Nws tuaj yeem tsim nrog kev pab ntawm cov kab mob muaj sia thiab los ntawm evaporation. Cov kab mob 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.
