Video: Pangea ua li cas ua ke?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Division ntawm Pangea
Pangea pib tawg txog 200 lab xyoo dhau los nyob rau hauv tib txoj kev uas nws tau tsim: los ntawm tectonic phaj txav los ntawm mantle convection. Ib yam li Pangea tau tsim los ntawm kev txav ntawm cov khoom tshiab kom deb ntawm thaj chaw rift, cov khoom tshiab kuj ua rau lub supercontinent cais.
Tsuas yog li ntawd, yuav ua li cas cov teb chaws sib haum xeeb?
Cov continents haum ua ke zoo li tej daim duab dhos ua si. Alfred Wegener tau hais tias teb chaws tau Ib zaug koom ua ke rau hauv ib lub teb chaws supercontinent hu ua Pangaea, txhais tau tias tag nrho lub ntiaj teb nyob rau hauv ancient Greek. Nws tau hais tias Pangea tawg ntev dhau los thiab qhov ntawd teb chaws tom qab ntawd tsiv mus rau lawv txoj haujlwm tam sim no.
Tom qab ntawd, lo lus nug yog, yuav ua li cas cov teb chaws sib haum xeeb ua ntej Pangea tawg? Lub mechanism rau kev sib cais ntawm Pangea Tam sim no tau piav qhia nyob rau hauv cov nqe lus ntawm phaj tectonics es tsis yog Wegener lub outmoded lub tswv yim ntawm continental drift, uas yooj yim hais tias lub ntiaj teb. teb chaws tau ib zaug koom ua ke nyob rau hauv lub supercontinent Pangea uas kav ntev rau feem ntau ntawm geology.
Raws li txoj cai, Pangea tawg li cas?
Kwv yees li 180 lab xyoo dhau los lub supercontinent Pangea pib tawg . Cov kws tshawb fawb ntseeg li ntawd Pangea tawg sib nrug rau tib yam vim li cas cov phiaj xwm tsiv niaj hnub no. Lub zog yog tshwm sim los ntawm cov convection tam sim no uas dov nyob rau hauv lub Upper cheeb tsam ntawm lub mantle.
Dab tsi ua pov thawj tias Pangea muaj nyob?
Pov thawj ntawm muaj nyob Cov pov thawj ntxiv rau Pangea muaj nyob rau hauv geology ntawm cov teb chaws uas nyob ib sab, nrog rau kev sib piv geological tiam sis ntawm sab hnub tuaj ntug dej hiav txwv ntawm South America thiab sab hnub poob ntug dej hiav txwv ntawm Africa. Lub polar ice cap ntawm Carboniferous Lub Sijhawm npog sab qab teb kawg ntawm Pangea.
Pom zoo:
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