Lub Aleutian Arc cais lub hiav txwv Bering los ntawm Dej Hiav Txwv Pacific , txuas ntxiv los ntawm Kamchatka thiab txuas mus rau sab hnub tuaj nyob rau sab qab teb Alaska. … Cov roob hluav taws kub los ntawm sab pem hauv ntej ntawm Aleutian Arc yog tsis muaj kev sib koom ua ke ntawm ophiolite piv rau Izu-Bonin-Mariana Island arc Island arc Island arcs yog cov saw ntev ntev ntawm cov hluav taws kub uas muaj zog nrog cov kev ua seismic hnyav pom nyob rau hauv convergent tectonic phaj ciam teb (xws li. Ring of Fire). Feem ntau cov kob arcs pib ntawm dej hiav txwv crust thiab tau tshwm sim los ntawm qhovntsej thiaj tsis mob ntawm lithosphere mus rau hauv lub mantle raws thaj tsam subduction. https://en.wikipedia.org › wiki › Island_arc
Island arc - Wikipedia
Muaj pes tsawg Aleutian Islands muaj?
Lub Aleutian Islands muaj ntau tshaj 200 Islandsuas yog lub ncov ntawm 57 submarine volcanoes (27 uas suav tias yog nquag) nce los ntawm ze hiav txwv mus rau ntau dua 9, 000 feet.
hom kev sib tsoo dab tsi tsim cov Aleutians?
Lub Aleutian Trench, uas tau tsim raws li convergent ciam teb thiab tau raug tsim los ntawm subduction ntawm cov dej hiav txwv phaj, txuas mus rau 2,000 mais. Ntawm nws qhov dav tshaj plaws, lub trench yog 50 txog 100 mais hla.
Alaska Aleutian megathrust yog dab tsi?
tsev. Alaska muaj av qeeg thiab tsunami loj tshaj plaws hauv tag nrho Tebchaws Meskas. Nws yog ib tug heev seismically activecheeb tsam uas lub Pacific phaj yog subducting nyob rau hauv lub North American phaj. Lub cheeb tsam subduction no, thaj tsam Alaska-Aleutian megathrust, ua rau muaj kev phom sij tsunami siab rau thaj chaw ntug dej hiav txwv uas nyob ib sab.
Lub roob hluav taws dab tsi yog Aleutian Islands?
Nws yog a stratovolcano tsim los ntawm cov txheej txheem sib txawv ntawm cov lava tawv, cov pob zeb tawg pob zeb, thiab cov pob zeb volcanic. Ntawm qhov ua siab tshaj qhov siab ntawm 1730 meters, lub roob hluav taws no yog qhov siab tshaj plaws hauv "Islands ntawm Plaub Roob" pawg.
