Stratigraphic nomenclature: Yuav ua li cas pob zeb hu ua Ib tug ooid yog ib tug me me spherical lis uas tsim thaum ib tug particle ntawm xuab zeb los yog lwm yam nucleus yog coated nrog concentric txheej ntawm calcite los yog lwm yam minerals. Ooids feem ntau tsim nyob rau hauv ntiav, yoj-agitated marine water.
Nyob hauv hom pob zeb twg yog ooids feem ntau yuav tsim?
Ooids feem ntau yog tsim los ntawm calcium carbonate (calcite lossis aragonite), tab sis tuaj yeem tsim los ntawm phosphate, av nplaum, chert, dolomite lossis hlau minerals, suav nrog hematite. Dolomitic thiab chert ooids feem ntau yuav yog qhov tshwm sim ntawm kev hloov pauv ntawm qhov kev ntxhib los mos hauv limestone.
pob zeb limestone nyob qhov twg?
Feem ntau yog pom nyob rau hauv qhov chaw ntiav ntawm dej hiav txwv nruab nrab ntawm 30 degrees sab qaum teb latitude thiab 30 degrees sab qab teb latitude. Limestone yog tsim nyob rau hauv Caribbean Hiav Txwv, Dej Hiav Txwv Khab, Persian Gulf, Gulf of Mexico, nyob ib ncig ntawm dej hiav txwv Pacific Islands, thiab nyob rau hauv lub Indonesian archipelago.
Yog ooids pob txha?
allochemical pob zebOöids (tseem hu ua oölites lossis oöliths) yog cov xuab zeb loj spheres ntawm calcium carbonate av nkos concentrically laminated txog qee yam nucleus grain, tej zaum ib cov pob txha tawg lossis cov pob zeb me me detrital quartz. nplej.
Oolitic limestone tsim li cas?
Oolitic limestone yog tsim los ntawm cov me me hu ua ooiliths uas tau daig ua ke los ntawm cov av nkos. Lawv tsim thaum calcium carbonate tso rau saum npoontawm cov xuab zeb dov (los ntawm nthwv dej) ncig ntawm ntug hiav txwv ntiav.
