Video: Vim li cas cov paj tawg puas hu ua destructive margins?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A puas tsuaj phaj ciam teb yog qee zaum hu ua ib tug convergent los yog tensional phaj paj ntaub . Qhov no tshwm sim thaum cov phiaj xwm dej hiav txwv thiab sab av loj txav mus ua ke. Kev sib txhuam ua rau melting ntawm cov phaj dej hiav txwv thiab tuaj yeem ua rau av qeeg. Magma nce los ntawm cov kab nrib pleb thiab tawg mus rau saum npoo.
Tsis tas li ntawd, qhov kev puas tsuaj yog dab tsi?
A puas tsuaj phaj ciam teb tshwm sim qhov twg ib daim phiaj dej hiav txwv thiab sab av loj txav ntawm ib leeg. Raws li nws nyob rau hauv qab ntawm lub continental phaj, dej hiav txwv phaj melts vim kev sib txhuam nyob rau hauv lub subduction cheeb tsam. Lub crust ua molten hu ua magma. Qhov no tej zaum yuav raug yuam mus rau saum npoo ntawm lub ntiaj teb ua rau volcanic eruption.
dab tsi yog 4 phaj margins? Muaj peb hom phaj tectonic ciam teb : divergent, convergent, thiab transform phaj ciam teb . Daim duab no qhia txog peb yam tseem ceeb ntawm phaj ciam teb : divergent, convergent, thiab transform.
Yog li ntawd, vim li cas qhov kev puas tsuaj ntawm cov ciam teb yog qhov txaus ntshai dua?
Kev Ua Phem Txhaum Cai Cov no ua rau muaj hluav taws kub hnyiab thiab av qeeg, nrog rau cov dej hiav txwv tob tob thiab cov roob roob. Ib tug dej hiav txwv phaj thiab continental phaj txav mus rau ib leeg. Lub denser dej hiav txwv phaj dives nyob rau hauv lub sib sib zog nqus continental ib tug, tsim ib tug sib sib zog nqus dej hiav txwv trench.
Dab tsi yog qhov sib txawv ntawm kev tsim thiab kev puas tsuaj phaj margins?
Constructive margins tshwm sim thaum ob daim hlau nrog tib qhov ntom ntom (continental lossis dej hiav txwv) txav deb ntawm ib leeg, uas ua rau magma los ntawm lub mantle nce mus rau saum npoo. Kev puas tsuaj margins tshwm sim thaum ib phaj yog denser dua lwm tus thiab txav mus rau ib leeg.
Pom zoo:
Vim li cas qhov kev tawg ntawm daim ntawv thiab hlawv cov ntawv suav tias yog ob hom kev hloov pauv?
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