Ilizwekazi lesibhozo .. Zealandia lihlabathi eloyikisayo kunye neemfihlo okokuqala

Ubunzulu obumalunga neemitha ezingama-3500 (i-1066 yeemitha) phantsi kwamaza oMzantsi wePasifiki kuphumle ilizwekazi lesibhozo elilahlekileyo, loo mhlaba mkhulu untywiliselweyo, obizwa ngokuba yiZealandia, apho izazinzulu zaqinisekisa ukuba lilizwekazi ngo-2017, kodwa abakwazanga ukuzoba. Imephu ebonisa ububanzi bayo obugcweleyo.

I Zealandia iphantsi kwamanzi oLwandlekazi lwePasifiki, kumazantsi-ntshona, yaye kubonakala ngathi iNew Zealand yanamhlanje yayiyinxalenye nje yayo.

“Senze ezi mephu ukuze zibonelele ngomfanekiso ochanekileyo, opheleleyo, nohlaziyiweyo we-geology yaseNew Zealand kunye ne-Southwest Pacific-ngcono kunangaphambili,” utshilo uNick Mortimer, owayekhokele iqela.

Yeyiphi imimangaliso esixhenxe yehlabathi eye yalimangalisa ihlabathi?

Imephu ye-bathymetric ye-Mortimer et al ejikeleze i-Zealandia, imilo kunye nobunzulu bomgangatho wolwandle, ukongeza kwidatha yayo ye-tectonic, iveze indawo echanekileyo ye-Zealandia, ukunqumla imida ye-tectonic plate.

Iimephu zikwaveze ulwazi olutsha malunga nendlela eyakhiwe ngayo i-Zealandia, eyayintywiliselwe kwizigidi zeminyaka eyadlulayo.

Ngokweenkcukacha ezintsha, i-Zealandia igubungela indawo emalunga ne-5 yezigidi zeekhilomitha (i-XNUMX yezigidi zeekhilomitha), malunga nesiqingatha sobukhulu belizwekazi elikufutshane laseOstreliya.

Ukufunda ngakumbi malunga nelizwekazi elintywiliselwe emanzini, uMortimer kunye neqela lakhe benze imaphu yeZealandia kunye nomgangatho wolwandle olujikelezileyo. Imephu yebhathymetric abayenzileyo ibonisa indlela eziphakame ngayo iintaba zelizwekazi kunye neenduli kumphezulu wamanzi.

Imephu ikwabonisa iindawo ezingaselunxwemeni, kunye namagama eempawu ezinkulu zangaphantsi kolwandle. Imephu yinxalenye ye inyathelo lehlabathi Ukwenza imephu yomgangatho wolwandle uphela ngo-2030.

Kukholelwa ukuba iZeadia yahlukana ne-Australia malunga nezigidi ezingama-80 kwiminyaka eyadlulayo, yaza yatshona phantsi kolwandle ngokuqhekeka kwelizwekazi elalisaziwa ngokuba yiGondwana Land.

UMortimer wayekhe wachaza ukuba izazinzulu zokwakheka komhlaba zifumene, ekuqaleni kwenkulungwane edlulileyo, iziqwenga zegranite ezisuka kwiziqithi ezikufutshane neNew Zealand, kunye namatye e-metamorphic eNew Caledonia ebonisa ijoloji yelizwekazi.