Ob daim phiaj dej hiav txwv yog dab tsi?
Ob daim phiaj dej hiav txwv yog dab tsi?

Video: Ob daim phiaj dej hiav txwv yog dab tsi?

Video: Ob daim phiaj dej hiav txwv yog dab tsi?
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Tam sim no continental thiab daim phiaj dej hiav txwv suav nrog: Eurasian phaj , Australian-Indian phaj , Philippines phaj , Pacific phaj Juan tsib Fuca phaj , Nazca phaj , Cocos phaj , North American phaj , Caribbean phaj , South American phaj , Neeg African phaj , Arabian phaj , lub Antarctic phaj , thiab Scotia phaj.

Ntawm no, daim phiaj dej hiav txwv yog dab tsi?

Oceanic daim hlau yog tectonic daim hlau uas nyob hauv qab dej hiav txwv. Lawv yog thinner dua continental daim hlau , thiab lawv kuj hnyav dua, yog li ntawd lawv caij qis dua ntawm lub mantle. Lawv yog cov tuab dua vim lawv feem ntau yog basalt, tau tawg los ntawm nruab nrab- dej hiav txwv ridges.

Kuj Paub, yuav ua li cas thaum ob daim phiaj dej hiav txwv sib ntsib? Thaum twg ob daim phiaj dej hiav txwv converge, lub denser phaj yuav subduct sub phaj uas yog tsawg ntom, tsim ib tug sib sib zog nqus hiav txwv trench ntawm lub point ntawm subduction. Tom qab suav tsis txheeb eruptions lub volcanoes tshwm sim los ntawm subduction yuav nce saum toj no hiav txwv nto raws li ib tug saw los yog arc ntawm Islands tuaj.

Hauv qhov no, muaj pes tsawg daim phiaj dej hiav txwv muaj?

Major thiab Minor Tectonic Daim phiaj Lub xya loj daim hlau suav nrog African, Antarctic, Eurasian, North American, South American, India-Australian, thiab Pacific daim hlau . Qee tus menyuam yaus daim hlau suav nrog Arabian, Caribbean, Nazca, thiab Scotia daim hlau . Ntawm no yog ib daim duab uas qhia txog qhov loj tectonic daim hlau ntawm lub ntiaj teb no.

Cov phiaj xwm dej hiav txwv ua li cas?

Dej hiav txwv crust yog tsis tu ncua tsim ntawm nruab nrab- dej hiav txwv ridges. Raws li daim hlau diverge ntawm cov ridges, magma nce mus rau saum lub mantle thiab crust. Raws li nws txav deb ntawm lub ridge, lub lithosphere yuav txias dua thiab denser, thiab sediment maj mam ua rau saum nws.

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