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描写夏威夷的英语作文

发表时间：2024-07-13 04:12:59 来源：网友投稿

Hawaiihaseightislandsandislocatedinthemiddleofthepacificocean.Thewholegroupofislandsisrisingduetovolcanicactivity.

RegardingthetotalheightofHawaii'shighestpointfromseabottom,Hawaiicanbeconsideredthehighestrockmassintheworld(9000meters).

Formillionofyearstheoceanbedofthepacifichasbeenmovingoverafunnelofveryhotmagma.Fromgreatdepthsubsurfacelavawellsup.Thelavaismountingupthevolcanicislandsuntilabovetheoceansurface.ThatwaytheHawaiianIslandsemerged.Thepreconditionforthetheoryisthatthehot-spotdoesnotmoveatanytime.TheimmoblilityoftheHot-Spotappliedasafixedpointforgeology.

TheislandchainofHawaii-3000kilometersnorthwestofthemainisland-ischangingitsdirectiontothenorth.Thisbendinthedirectionistotracebackforthefactthatpacificoceanbedischangingitsdirection.Thistheoryisbasedofmagneticmineralsinsideofbasalt.Thebasaltwasarisedfrommagma,thatwasdescendedfromtheHot-Spot.Insideoftheliquidmagmathemineralswerealignedinthedirectionofthemagneticfieldoftheearth.Thealignmentofthemineralsinsidetherockwaschangingoverandover

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