用英语简单介绍一下Hawaii……最好再加上点去哪得好处-查字典问答网
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  用英语简单介绍一下Hawaii……最好再加上点去哪得好处

  用英语简单介绍一下Hawaii……

  最好再加上点去哪得好处

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2020-06-15 07:06
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罗玉臣

  Hawaiihaseightislandsandislocatedinthemiddleofthepacificocean.Thewholegroupofislandsisrisingduetovolcanicactivity.

  RegardingthetotalheightofHawaii'shighestpointfromseabottom,Hawaiicanbeconsideredthehighestrockmassintheworld(9000meters).

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

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

2020-06-15 07:09:23

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