Limestone yog aNqaij pob zeb Thawj feem ntau tsim ntawmcalcium carbonate (caco₃)nyob rau hauv daim ntawv ntawm cov ntxhiaqho muaj. Nws siv los ntawm ntau cov txheej txheem geological, tshuaj lom neeg, thiab muaj cov suab nrov ntawm phab ntsa .
Hauv qab no yog kev ntsuas kev tshaj lij ntawm limestone tsim:
{{0 {}} biological tsim (biogenic limestone)
Feem ntau limestone thawj pib los ntawmMarine Ecompismsuas extract calcium carbonate los ntawm seawater los tsim lawv lub plhaub lossis pob txha {{0} {{1} {{1} {1} {1} {1} {1} {1} {1} {1} {1} {1} {1} {1} {1} {1} {1} {tus yuam sij cuam tshuam nrog:
Coral Reefs(Ua kom muaj cov nyiaj tso tseg limestone)
Foraminifera & cocololithophores(metcopic plankton)
Mollusks & brachiopods(shellfish)
Algae (e {. g .}, halimeda)
Txheej txheej:
Kev tau ntxivIng etresh cov khib nyiab nqis hauv qhov ntiav, sov cov nkoj ua kom sov sov .
Raws li→ overburden siab squeezes tawm dej, cog lus sediments .
Xi kev yoojyim→ DaSals (E {.}}}}}}}}} {preping rau hauv pob zeb .
{{0 {}} Kev Tsim Tshuaj (Inorganic nag lossis daus)
Limonestone kuj tseem tuaj yeem tsim los ntawmtshuaj lom neeg nagkaslos ntawm calcium carbonate-saturated dej, tshwj xeeb tshaj yog nyob rau hauv:
Qhov tsua (speleothems)→ stalactites & Stalagmites daim foos ntawm Dripping Dej Evaporation .
Kub springs (travertine)→ Kev nrawm nrawm ua rau CCO₃ Deposition .
Oolitic limestone→ concentric txheej ntawm daim ntawv calcite nyob ib ncig ntawm cov xuab zeb nplej hauv agitated dej .
Tshuaj lom neeg:
Ca 2++2 HCO3- → CCO3 ↓ + CO2 ↑ + h2oca {}} → + h2 ↑ + h2 o
3. Dhuavengenesis & Metamorphism
Kev ua txhaum cai→ Kev Hloov Pauv Hloov (E {{1} g {}}}}}, Recrystallization) Txhim Kho Kom Limone Density.
Metamorphism→ Nyob rau hauv tshav kub / siab, limestone uazeb.
Ntsiab lus ntau yam
| Ntaus | Tsim cov txheej txheem | Piv Txwv Siv |
|---|---|---|
| Xaum dawb | MOTECTCOPIC PLANKON kev txhawb nqa | Sau tsab Chalk, Maas |
| Fossiliferous | Plhaub / Coral khib nyiab | Cov pob zeb dai |
| Neeg travertine | Tshuaj lom neeg nag lossis daus (springs) | Flooring, Phab Ntsa Cladding |
| Lus mog | Yoj-agitated compacate coings | Cov Cuab Yeej Txhim Kho |
Tag
Limestone yog tsim hinges rauphev lom zem(tseem ceeb) thiabtshuaj nag lossis daus, muaj kev cuam tshuam los ntawm ib puag ncig qhov zoo liDej kub, pH, thiab organic kev ua si{{0 {}} nws lub durability thiab versatility ua kom nws zoo tagnrho rauKev Tsim Kho, Duab puab, thiab Kev Lag Luam (E {{{}}}}}}, cement, kua txiv ntau lawm).
Txog kev saib xyuas cov khoom lag luam limestone, tshawb nrhiavZhenhao Pob Zeb Cov Khoom- Peb muabNtuj limestone thiab kev txiav cov kev caiRau cov haujlwm thoob ntiaj teb .
Koj puas xav nug txogLimestone vuas cov vuas lossis kuaj? Tiv tauj peb!
