Yog tias ob daim phiaj yog dej hiav txwv, xws li nyob rau sab hnub poob Pacific Dej hiav txwv, roob hluav taws tsim ib txoj kab nkhaus ntawm cov Islands tuaj, lub npe hu ua cov kob arc, uas yog sib npaug mus rau trench, Raws li nyob rau hauv cov ntaub ntawv ntawm Mariana Islands thiab cov nyob ib sab Mariana Trench.
Puas yog roob hluav taws arc tib yam li kob arc?
A volcanic arc yog cov kab hluav taws xob, ntau pua mus rau txhiab mais ntev, uas ua rau saum thaj tsam subduction. Ib qho island volcanic arc cov ntaub ntawv hauv dej hiav txwv ntawm dej hiav txwv-dej hiav txwv subduction. … Ib lub roob hluav taws kub hnyiab tau ua raws cov npoo ntawm lub teb chaws uas dej hiav txwv crust subducts hauv qab teb chaws av av.
piv txwv ntawm cov kob arcs yog dab tsi?
Qee cov piv txwv paub zoo ntawm cov kob arcs yog Nyiv, Aleutian Islands ntawm Alaska, Mariana Islands, tag nrho cov uas nyob hauv Pacific, thiab Tsawg Antilles hauv Caribbean. Kev nplua nuj ntawm pob zeb volcanic nyob ib ncig ntawm Dej Hiav Txwv Pacific tau ua rau lub npe ntawm Pacific margin ua "Ring of Fire".
Vim li cas Hawaii tsis yog volcanic Island arc?
Island arcs yog volcanic Islands tuaj uas ua rau tib lub sijhawm mus rau dej hiav txwv trenches hauv subduction zones. Lub Pacific Ring of Fire yog lub tsev rau ntau pawg ntawm cov Islands tuaj. Lub roob hluav taws uas tsim saum cov chaw kub xws li Hawaiian Islandstsis yog roob hluav taws kub.
Puas yog volcanic Island arc divergent?
Cov magma tshiab (lub pob zeb molten) nce thiab tuaj yeem tawg ua rau lub roob hluav taws, feem ntau tsim cov arcs ntawm cov kob rawslub convergent ciam teb. Thaum ob daim phiaj txav deb ntawm ib leeg, peb hu qhov no daim phiaj sib txawv.
