Fossilization feem ntau tshwm sim hauv cov kab mob nrog tawv, pob txha hauv lub cev, xws li pob txha, hniav, lossis plhaub. Cov kab mob mos, xws li cov kab mob, tsis tshua muaj fossilized. Qee zaum, txawm li cas los xij, cov nplaum nplaum ntawm tsob ntoo tuaj yeem ua fossilized. Qhov no hu ua fossilized resin lossis amber.
Dab tsi ntawm tus tsiaj feem ntau dhau los ua pob txha?
Yuav luag tag nrho cov kab mob muaj sia tuaj yeem tawm hauv pob txha, tab sis feem ntau tsuas yog qhov nyuaj ntawm cov nroj tsuag thiab tsiaj fossilize. Cov nqaij mos hauv nruab nrog cev, cov leeg, thiab daim tawv nqaij sai sai thiab tsis tshua muaj kev khaws cia, tab sis cov pob txha thiab cov plhaub ntawm cov tsiaj yog cov neeg sib tw zoo rau fossilization.
Yuav ua li cas fossilize?
Fossils yog tsim nyob rau hauv ntau txoj kev, tab sis feem ntau yog tsim thaum ib tsob nroj los yog tsiaj tuag nyob rau hauv ib tug watery ib puag ncig thiab faus rau hauv av nkos thiab silt. Cov ntaub so ntswg sai sai decompose tawm hauv cov pob txha tawv los yog plhaub tom qab. Sij hawm dhau mus sediment ua rau saum toj thiab hardens rau hauv pob zeb.
fossils feem ntau tshwm sim nyob qhov twg?
Fossils, cov seem ntawm cov tsiaj thiab cov nroj tsuag lub neej, feem ntau pom muaj nyob rau hauv pob zeb sedimentary. Ntawm cov pob zeb sedimentary, feem ntau fossils tshwm sim hauv shale, limestone thiab sandstone. Lub ntiaj teb muaj peb hom pob zeb: metamorphic, igneous thiab sedimentary.
Koj qhia li cas yog pob txha nyob hauv pob zeb?
Feem ntau, txawm li cas los xij, cov khoom hnyav thiab cov xim me me yog pob zeb, zoo li flint. Paleontologists kuj tshuaj xyuas qhov chaw ntawmmuaj peev xwm fossils. Yog tias lawv du thiab tsis muaj kev ntxhib los mos tiag tiag, tej zaum lawv yog pob zeb. Txawm tias nws zoo li pob txha, yog tias nws tsis muaj qhov zoo nkauj ces nws yog pob zeb.