Video: Dab tsi tuaj yeem sib txawv ntawm cov pob zeb sedimentary qhia geologists txog qhov chaw?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib qho outcrop muaj ob peb kab rov tav sedimentary pob zeb txheej sawv cev rau lub sij hawm ntsug-series ntawm geological xwm txheej. Cov textures ntawm txhua sedimentary txheej qhia peb ib puag ncig uas muaj nyob rau ntawm qhov ntawd qhov chaw thaum lub txheej tsim.
Dhau li ntawm no, dab tsi ua cov khaubncaws sab nraud povtseg ntawm cov pob zeb sedimentary no?
Sediment feem ntau tso rau hauv txheej , thiab cwb txheej (txaj) tuaj yeem nthuav tawm cov ntsiab lus xws li kev hloov pauv me ntsis hauv dej lossis txawm tias hloov raws caij nyoog. Ib qho kev hloov pauv, hla txaj, muaj ntau yam khoom txheej nrog kev taw qhia sib txawv; zoo li ripple marks, cov no qhia cov lus qhia tam sim no.
Ib sab saum toj no, koj tuaj yeem qhia li cas pob zeb sedimentary los ntawm lwm hom? Ib txoj kev mus qhia yog a pob zeb qauv yog sedimentary yog saib seb nws yog ua los ntawm cov nplej. Qee cov qauv ntawm sedimentary pob zeb xws li limestone, sandstone, thee thiab shale. Igneous pob zeb form Thaum magma los ntawm sab hauv lub ntiaj teb txav mus rau saum npoo av, los yog raug yuam kom saum lub ntiaj teb nto li lava thiab tshauv los ntawm lub roob hluav taws.
Tom qab ntawd, lo lus nug yog, dab tsi tuaj yeem ua rau cov pob zeb sedimentary qhia peb txog ib puag ncig yav dhau los?
Sedimentary pob zeb qhia peb txog yav dhau los ib puag ncig ntawm lub ntiaj teb nto. Vim li no, lawv yog thawj zaj dab neeg-hais txog ntawm yav dhau los huab cua, lub neej, thiab cov xwm txheej tseem ceeb ntawm lub ntiaj teb nto. Txhua hom ib puag ncig muaj cov txheej txheem tshwj xeeb uas tshwm sim nyob rau hauv nws uas ua rau ib hom sediment tso rau hauv.
Vim li cas cov pob zeb sedimentary muaj txheej xim sib txawv qee zaum?
Lithification yog ua los ntawm ob txheej txheem: cementation thiab compaction. Cementation tshwm sim thaum cov khoom crystallize los yog sau rau hauv qhov chaw nruab nrab ntawm cov khoom xoob ntawm sediment . Daim duab 4.21: Lub pob zeb no yog ua los ntawm a sedimentary pob zeb hu ua sandstone. Cov kab dawb thiab liab sawv cev txheej txheej ntawm sediment.
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