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
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
Hawaiihaseightislandsandislocatedinthemiddleofthepacificocean.Thewholegroupofislandsisrisingduetovolcanicactivity.
RegardingthetotalheightofHawaii'shighestpointfromseabottom,Hawaiicanbeconsideredthehighestrockmassintheworld(9000meters).
Formillionofyearstheoceanbedofthepacifichasbeenmovingoverafunnelofveryhotmagma.Fromgreatdepthsubsurfacelavawellsup.Thelavaismountingupthevolcanicislandsuntilabovetheoceansurface.ThatwaytheHawaiianIslandsemerged.Thepreconditionforthetheoryisthatthehot-spotdoesnotmoveatanytime.TheimmoblilityoftheHot-Spotappliedasafixedpointforgeology.
TheislandchainofHawaii-3000kilometersnorthwestofthemainisland-ischangingitsdirectiontothenorth.Thisbendinthedirectionistotracebackforthefactthatpacificoceanbedischangingitsdirection.Thistheoryisbasedofmagneticmineralsinsideofbasalt.Thebasaltwasarisedfrommagma,thatwasdescendedfromtheHot-Spot.Insideoftheliquidmagmathemineralswerealignedinthedirectionofthemagneticfieldoftheearth.Thealignmentofthemineralsinsidetherockwaschangingoverandover