Nyob rau hauv hom pob zeb twg koj yuav pom fossils Vim li cas?
Nyob rau hauv hom pob zeb twg koj yuav pom fossils Vim li cas?

Video: Nyob rau hauv hom pob zeb twg koj yuav pom fossils Vim li cas?

Video: Nyob rau hauv hom pob zeb twg koj yuav pom fossils Vim li cas?
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Sedimentary pob zeb , tsis zoo li igneous thiab metamorphic pob zeb, yog tsim los ntawm gradual deposition thiab cementation ntawm cov khoom nyob rau lub sij hawm. Cov pob zeb zoo li no muab cov xwm txheej zoo tshaj plaws rau pob txha pob txha vim tias cov nroj tsuag thiab tsiaj txhu tuaj yeem npog los ntawm cov txheej txheem ntawm cov ntaub ntawv dhau sijhawm, yam tsis muaj kev puas tsuaj.

Ib yam li ntawd, tib neeg nug, vim li cas cov pob txha muaj nyob hauv pob zeb sedimentary?

Sedimentary pob zeb tuaj yeem muaj pob txha vim, tsis zoo li feem ntau igneousand metamorphic pob zeb , lawv tsim ntawm qhov kub thiab txias uas tsis ua kom puas pob txha seem. Cov kab mob tuag tuaj yeem dhau los ua sediments uas yuav, raws li txoj cai, dhau los sedimentary pob zeb.

Ib tug kuj yuav nug, koj qhia li cas yog lub pob zeb muaj pob txha? Nws kuj yog ib lub tswv yim zoo los nrhiav kos npe tias cov pob zeb muaj ib tug fossil ua ntej sim ua txhaum nws, ib feem ntawm a pob txha tej zaum yuav pom ntawm qhov chaw pob zeb . Koj ua tau txheeb xyuas lub limestone los ntawm nws yog lighter grey xim thiab hardness, nws yuav tsum yog heev nyuaj rau tawg yam tsis muaj rauj.

Kuj nug, vim li cas nws tsis tshua pom cov pob txha hauv cov pob zeb metamorphic?

Igneous pob zeb daim ntawv los ntawm molten pob zeb , thiab tsis tshua muaj pob txha hauv lawv. Metamorphic pob zeb tau muab tso rau hauv siab heev, rhuab, squashed los yog stretched, thiab pob txha feem ntau tsis muaj sia nyob cov mob hnyav no. Feem ntau nws tsuas yog sedimentary pob zeb uas muaj pob txha.

Vim li cas cov pob txha muaj feem ntau pom muaj nyob hauv qee hom pob zeb thiab tsis yog lwm tus?

Fossils yog ntau dua hauv qee yam ntawm sedimentary pob zeb tshaj lwm tus . Muaj ntau ntau yam uas tuaj yeem ua rau muaj qhov tshwm sim ntawm lub cev raug khaws cia raws li ib pob txha . Fossils yog feem ntau nyob rau hauv limestones. Qhov ntawd yog vim feem ntau limestones muaj ib feem los yog feem ntau ntawm lub plhaub ntawm cov kab mob.

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