Izwekazi lesishiyagalombili .. Zealandia yizwe elesabekayo nezimfihlo okokuqala ngqa

Ekujuleni okungamamitha angama-3500 (amamitha ayi-1066) ngaphansi kwamagagasi aseNingizimu Pacific kuphumula izwekazi lesishiyagalombili elilahlekile, lelo zwe elikhulu elingaphansi komhlaba, elibizwa nge-Zealandia, ososayensi abakuqinisekisile njengezwekazi ngo-2017, kodwa abakwazanga ukudweba. imephu ekhombisa ububanzi bayo obugcwele. .

IZealandia ingaphansi kwamanzi oLwandlekazi iPacific, engxenyeni eseningizimu-ntshonalanga, futhi kubonakala sengathi iNew Zealand yanamuhla yayiyingxenye nje yayo.

"Sidale lawa mamephu ukuze sinikeze isithombe esinembile, esiphelele, nesakamuva se-geology yaseNew Zealand kanye ne-Southwest Pacific - kangcono kunangaphambili," kusho u-Nick Mortimer, ohola iqembu.

Yiziphi izimangaliso eziyisikhombisa zomhlaba ezahlaba umxhwele umhlaba?

Imephu ye-bathymetric ye-Mortimer et al. ezungeze i-Zealandia, ukwakheka nokujula kwephansi lolwandle, ngaphezu kwedatha yakhona ye-tectonic, kwembule indawo eqondile ye- Zealandia, yonkana imingcele yamapuleti e-tectonic.

Amamephu aphinde aveza imininingwane emisha yokuthi i-Zealandia, eyacwiliswa emanzini ezigidini zeminyaka edlule, yakhiwa kanjani.

Ngokwemininingwane emisha, i-Zealandia ihlanganisa indawo ecishe ibe yizigidi ezi-5 zamamayela-skwele (amakhilomitha-skwele ayizigidi ezi-XNUMX), cishe uhhafu wezwekazi eliseduze lase-Australia.

Ukuze ufunde kabanzi mayelana nezwekazi elicwile emanzini, u-Mortimer nethimba lakhe badwebe imephu ye-Zealandia kanye nephansi lolwandle elilizungezile. Imephu ye-bathymetric abayidalile ibonisa ukuthi izintaba zezwekazi kanye namagquma ziphakeme kangakanani emanzini.

Imephu iphinde ibonise izindawo ezisogwini, kanye namagama ezici ezinkulu ezingaphansi kolwandle. Imephu iyingxenye ye Isinyathelo somhlaba wonke Ukwenza imephu yonke indawo yolwandle ngo-2030.

Kukholakala ukuthi iZealandia yahlukana ne-Australia eminyakeni eyizigidi ezingu-80 edlule, futhi yacwila ngaphansi kolwandle ngokuhlukana kwezwekazi elaziwa ngokuthi iGondwana Land.

UMortimer wayeke wachaza ukuthi izazi zokwakheka komhlaba zazithole, ekuqaleni kwekhulunyaka eledlule, izingcezu zegwadle ezivela eziqhingini eziseduze neNew Zealand, kanye namatshe e-metamorphic eNew Caledonia okubonisa i-geology yezwekazi.