Piv txwv suav nrog cov ntug dej hiav txwv nruab nrab hauv ntiaj teb cov dej hiav txwv. Cov chaw sib kis tau tshwm sim qhov twg cov teb chaws sib txawvPiv txwv suav nrog thaj chaw Africa rift, Dej Hiav Txwv Liab, Iceland, thiab North America thaj av Great Basin suav nrog Gulf of California (saib kev sib tham hauv qab).
cov chaw sib kis tshwm sim nyob qhov twg?
Cov chaw sib kis tau pom ntawm cov crests ntawm dej hiav txwv ridges.
Dab tsi tshwm sim ntawm qhov chaw sib kis?
Cov chaw sib kis tshwm sim qhov twg ob daim phiaj txav deb ntawm ib leeg, thiab cov kab sib sib zog nqus tau qhib los ntawm cov pob zebQhov kev ncua ntev ntawm cov pob zeb no tso cai rau magma los ntawm lub tsho sab saud nce mus rau saum npoo thiab txias, feem ntau tsim bas alt.… Cov pob zeb no tuab dua, thiab av qeeg kuj muaj zog dua.
chaw dej hiav txwv sib kis nyob qhov twg?
Seafloor kis tau tshwm sim nruab nrab hiav txwv ridges- roob loj loj nce los ntawm dej hiav txwv pem teb. Piv txwv li, Mid-Atlantic Ridge, cais North American phaj los ntawm Eurasian phaj, thiab South American phaj los ntawm African phaj.
Cov chaw sib sib zog nqus tob npaum li cas?
Nyob rau ntawm qhov chaw sib kis ntawm ib nrab hiav txwv ntug dej hiav txwv, qhov tob ntawm ntug hiav txwv yog kwv yees li 2, 600 meters (8, 500 ft) ntawm ntug dej hiav txwv, qhov tob ntawm ntug hiav txwv dej (los yog qhov siab ntawm ib qho chaw nyob rau hauv nruab nrab ntawm dej hiav txwv ridge saum toj no theem pib) yog correlated nrog nws hnub nyoog (hnub nyoog ntawm lithosphere qhov tob yog ntsuas).
