Ib txheej txheem uas dolostone tuaj yeem tsim tau yog los ntawm txhais tau tias nag lossis daus ntawm calcium magnesium carbonate los ntawm dej hiav txwv. Lwm cov txheej txheem yog rau dolomite kom maj mam hloov cov calcite ntawm limestone tom qab cov limestone tau tso. … Dolostone tau tsim nyob rau hauv dej sov, ntshiab, ntiav dej hiav txwv thaum lub sij hawm Paleozoic Era.
Puas yog dolostone chemically tsim?
Dolomite yog ib hom pob zeb tsim pob zeb. Nws yog calcium magnesium carbonate nrog tshuaj muaj pes tsawg leeg ntawm CaMg (CO 3) 2. Nws yog thawj feem ntawm cov pob zeb sedimentary hu ua dolostone thiab cov pob zeb metamorphic hu ua dolomic marble. Limestone uas muaj qee cov dolomite hu ua dolomite limestone.
Puas yog dolostone yog dolomite?
Dolostone yog pob zeb zoo-grained sedimentary feem ntau ntawm dolomite, calcium thiab magnesium carbonate mineral.
Micrite yog dab tsi?
Micrite, pob zeb sedimentary tsim los ntawm cov khoom calcareousqhov ntev ntawm 0.06 txog 2 hli (0.002 txog 0.08 nti) uas tau muab tso rau hauv mechanically es tsis yog los ntawm kev daws.
Ooids hnub nyoog pes tsawg?
3500–4500 xyoo uas tau pom zoo nrog calibrated AMS 14C hnub nyoog ntawm 3370F50 xyoo BP ntawm tib yam khoom. Yog li, cov ooids tau tsim, thauj, emplaced, muaj zog cemented, thiab loj eroded los ntawm ntug hiav txwv dej nyob rau hauv tsuas yog 3400 xyoo.
