Qhov sib txawv tseem ceeb ntawm cov tshuaj lom neeg thiab cov pob zeb detrital sedimentary yog qhov tsim cov pob zeb chemical sedimentary tsis cuam tshuam rau cov huab cua ncaj qha, hos qhov tsim ntawm detrital sedimentary pob zeb cuam tshuam rau cov huab cua ncaj qha.
Sedimentary pob zeb yog tsim los ntawm cov pob zeb uas twb muaj lawm los yog cov khoom uas muaj sia nyob ib zaug. Cov pob zeb no tsim los ntawm cov depositions uas tau sau rau ntawm lub ntiaj teb saum npoo thiab feem ntau muaj cov txheej txheem sib txawv lossis cov txaj pw. Muaj ob hom chemical thiab sedimentary pob zeb hu ua clastic thiab chemical sedimentary pob zeb.
Tshuaj Sedimentary pob zeb yog dab tsi?
Tshuaj lom neeg pob zeb yog ib hom pob zeb sedimentary tsim los ntawm cov txheej txheem uas tsis ncaj qha cuam tshuam nrog huab cua huab cua thiab yaig. Txawm li cas los xij, huab cua tshuaj lom neeg tuaj yeem ua rau cov ntaub ntawv yaj hauv dej, uas tuaj yeem ua rau tsim cov pob zeb zoo li no. Hom tshuaj lom neeg feem ntau yog pob zeb limestone, uas muaj cov ntxhia calcite. Cov pob zeb no tsim los ntawm cov txheej txheem biochemical uas tshwm sim hauv dej hiav txwv ntiav.
Limestone nquag tau hloov mus rau hauv dolomite lossis dolostones thaum lub sij hawm ntawm kev sib cog lus, dewatering, thiab lithification ntawm limestone. Cov txheej txheem no hu ua dolomitization. Cov txheej txheem no suav nrog kev tshem tawm calcium los ntawm limestone los ntawm magnesium-muaj cov kev daws teeb meem, thiab qhov no suav nrog kev hloov cov calcium nrog magnesium.
Daim duab 01: Pob Zeb Loj Loj
Lwm hom tshuaj lom neeg pob zeb yog cherts. Qhov no yog ib lub pob zeb tawv thiab iav pob zeb uas muaj silica uas ua los ntawm dej. Lub pob zeb no yog tsim nyob rau hauv hnab ris los yog voids uas muaj roj los yog organic teeb meem uas tau raug tshem tawm los yog decomposed nrog lub sij hawm. Tsis tas li ntawd, hom pob zeb no tuaj yeem tshwm sim raws li cov txheej txheem txuas ntxiv hauv cov pob zeb sedimentary.
Dab tsi yog Detrital Sedimentary Pob Zeb?
Detrital sedimentary pob zeb yog ib hom pob zeb sedimentary uas muaj cov pob zeb ua ntej uas twb muaj lawm uas los ntawm cov huab cua puag ncig. Cov no tseem hu ua pob zeb clastic. Feem ntau cov sediments nyob rau hauv cov pob zeb no yog mechanically weathered sediments. Txawm li cas los xij, qee cov pob zeb detrital sedimentary yog cov pob zeb tshuaj lom neeg.
Daim duab 02: Detrital Sedimentary Pob Zeb
Peb tuaj yeem faib thiab sau npe ob peb pawg ntawm cov pob zeb detrital nyob ntawm seb qhov loj npaum li cas. Ntawm no, cov nplej tau muab qhab nia los ntawm qhov loj mus rau qhov me me ntawm qhov ntsuas Wentworth.
Dab tsi yog qhov txawv ntawm Tshuaj thiab Detrital Sedimentary Pob Zeb?
Sedimentary pob zeb yog tsim los ntawm cov pob zeb uas twb muaj lawm los yog cov khoom uas muaj sia nyob ib zaug. Cov pob zeb no tsim los ntawm cov depositions uas tau sau rau ntawm lub ntiaj teb nto. Qhov sib txawv tseem ceeb ntawm cov pob zeb chemical thiab detrital sedimentary yog tias kev tsim cov pob zeb chemical sedimentary tsis cuam tshuam rau cov huab cua ncaj qha, thaum tsim cov pob zeb detrital sedimentary yuav cuam tshuam cov huab cua ncaj qha. Hauv lwm lo lus, qhov sib txawv ntawm cov pob zeb chemical thiab detrital sedimentary yog tias cov pob zeb chemical sedimentary yog tsim los ntawm cov txheej txheem tshuaj thaum cov pob zeb detrital sedimentary yog tsim los ntawm kev siv tshuab. Limestone, dolomite, chert, thiab lwm yam yog cov piv txwv ntawm cov tshuaj lom neeg cov pob zeb thaum cov xuab zeb thiab pob zeb yog cov piv txwv ntawm detrital sedimentary pob zeb.
Hauv qab no yog cov ntsiab lus ntawm qhov sib txawv ntawm cov tshuaj lom neeg thiab cov pob zeb detrital sedimentary hauv daim ntawv tabular.
Summary – Chemical vs Detrital Sedimentary Rocks
Muaj ob hom pob zeb sedimentary uas yog chemical thiab detrital lossis clastic sedimentary pob zeb. Qhov sib txawv tseem ceeb ntawm cov pob zeb chemical thiab detrital sedimentary yog qhov tsim ntawm cov pob zeb chemical sedimentary tsis koom nrog e direct mechanical weathering, whereas tsim cov detrital sedimentary pob zeb yuav tsum tau direct mechanical weathering.
