Puas yog cov Appalachians siab dua lub Himalayas?
Puas yog cov Appalachians siab dua lub Himalayas?
Anonim

Tsis yog txhua lub roob folding yog nce siab. Cov Appalachians , ncab raws North America sab hnub tuaj ntug dej hiav txwv, feem ntau qis qis, maj mam slopes. Ntau lab xyoo dhau los, cov Appalachians tau siab tshaj lub Himalayas ! Ntau lab xyoo ntawm kev yaig, txawm li cas los xij, tau coj lawv tus lej xov tooj.

Tib neeg kuj nug tias, Himalayas puas siab dua?

Cov Himalayas txuas ntxiv nce ntau dua 1 cm hauv ib xyoos - kev loj hlob ntawm 10 km hauv ib lab xyoo! Yog tias yog li ntawd, vim li cas ho tsis yog Himalayas txawm siab dua? Cov kws tshawb fawb ntseeg tias Eurasian Phaj tam sim no yuav nthuav tawm ntau dua li qhov kev sib tw, thiab kev ncab yuav ua rau qee qhov kev poob qis vim lub ntiajteb txawj nqus.

Tsis tas li ntawd, cov Appalachians siab dua Rockies? Muab piv rau lub siab tshaj plaws ntawm lub Appalachians ntawm 6, 684 ko taw (Mount Mitchel), lub Rockies Qhov siab tshaj plaws yog 14, 440 ko taw (Mount Elbert). Nyob rau hauv tas li ntawd, lub Rockies stretch thoob plaws lub teb chaws yuav luag ob zaug raws li ntev raws li lub Appalachian roob (1,500 mais piv rau 3,000 mais).

Ua li no, Appalachian Roob siab npaum li cas ntawm lawv qhov siab tshaj plaws?

Cov Appalachian roob , feem ntau hu ua Appalachians , yog ib qhov system roob nyob rau sab hnub tuaj North America. Cov Appalachians thawj tsim muaj kwv yees li 480 lab xyoo dhau los thaum lub sijhawm Ordovician.

Appalachian roob
Peak Mount Mitchell
Qhov siab 6,684 ft (2,037 m)
Qhov ntev
Ntev 1,500 mi (2,400 km) UAS

Puas muaj tej roob siab dua?

Hluas roob feem ntau muaj cov cim tshiab geologically, zoo li lub ncov ntse, thiab lawv feem ntau yog siab dua tshaj roob qub . Txhua yam hauv ntiaj teb no erodes. Hauv qab no yog ib daim duab ntawm Appalachian Roob uas tau nyob ib ncig ntawm daim ntawv ntev dua geologically.

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