Ib yam li dej hiav txwv crust yog tsim nyob nruab nrab ntawm dej hiav txwv ridges, nws raug puas tsuaj nyob rau hauv subduction zones Subduction yog cov txheej txheem tseem ceeb geological uas lub phaj tectonic ua los ntawm cov khoom lithospheric ntom ntom. los yog ntog hauv qab ib phaj ua los ntawm tsawg-dense lithosphere ntawm ib tug convergent phaj ciam teb.
Ntawm twg hom tectonic ciam teb yog dej hiav txwv crust puas lawm?
Oceanic crust raug rhuav tshem ntawm convergent ciam teb qhov twg subduction tshwm sim hauv trench, xws li Mariana Trench lossis Cayman Trough.
dej hiav txwv crust plunges puas lawm?
Ib lub npe nrov tshaj plaws yog hu ua Mid-Atlantic Ridge thiab nws khiav mus rau sab qaum teb mus rau sab qab teb raws nruab nrab ntawm Dej Hiav Txwv Atlantic. Yog li cov dej hiav txwv tshiab tau tsim nyob rau hauv "nruab nrab" ntawm dej hiav txwv raws Mid Ocean Ridges, thiab nws tau puas tsuaj qhov twg dej hiav txwv crust ntsib lwm thaj tsam tectonic thiab subducts
Yuav ua li cas rau lub hiav txwv crust?
dej hiav txwv crust, txheej txheej sab nraud ntawm lub ntiaj teb lithosphere uas pom nyob hauv qab dej hiav txwv thiab tsim ntawm cov chaw sib kis ntawm cov dej hiav txwv ridges, uas tshwm sim nyob rau ntawm divergent phaj ciam teb. Zoo li continental crust, txawm li cas los xij, dej hiav txwv crust raug rhuav tshem hauv thaj chaw subduction. …
Neeg teb chaws crust puas tsuaj nyob qhov twg?
Continental crust yog tsim thiab (tsawg dua feem ntau) rhuav tshem feem ntau los ntawm cov txheej txheem phaj tectonic, tshwj xeeb tshaj yog nyob rau thaj tsam ntawm cov phaj convergent. Tsis tas li ntawd, cov khoom siv sab av loj tau hloov mus rau dej hiav txwv crust los ntawm sedimentation.
