Amapuleti e-Tectonics - umbono wesayensi ochaza ukunyakaza okukhulu kwamapuleti amakhulu ayisikhombisa noma ayisishiyagalombili (kuya ngokuthi anqunywe kanjani) futhi inani elikhudlwana lamapuleti amancane e-linloll eqinile yomhlaba wethu, okungukuthi, i-lithosphere. Ukunyakaza okuhlobene kwamapuleti kuvame ukuba zero kuya kumamilimitha ayi-100 ngonyaka: Kusukela izinqubo ze-tectonic zaqala emhlabeni phakathi eminyakeni eyi-3.3 ne-3.5 billion edlule, leli jubane lanele ukuhambisa amazwe amaningi.
Iqembu le-Geophysician elivela eChina, e-Australia naseCanada langela elinye lamamodeli aphelele kakhulu wokuhamba okuqhubekayo kwamapuleti e-tectonic aqala eminyakeni eyizigidi eziyinkulungwane edlule. Futhi isikhathi esihlaba umxhwele sesikhathi senziwe kwividiyo engama-40-yesibili. Isifundo ngokwaso sishicilelwe kumagazini Ukubuyekezwa Kwezesayensi Yomhlaba.
"Iplanethi yethu ihlukile ngoba inempilo. Kepha lokhu kungenzeka kuphela ngoba izinqubo ze-geological, njenge-slab tectonics, zinikezela ngohlelo lokusekelwa lweplanethi. Ithimba lethu lenze imodeli entsha ngokuphelele yokuziphendukela kwemvelo komhlaba iminyaka eyizigidi eziyinkulungwane zokugcina, "kusho uProfesa Ditmar Müller waseSydney University.
Eminyakeni emine edlule, ababhali bocwaningo baqoqa imininingwane ekuhambeni okuhlobene kwamapuleti kuwo wonke amazwekazi kanye nomlando we-tectonic ezifundeni ezikude. Ukwakhiwa kabusha okubangelwa okuvelayo kukhombisa ukuthi izilwandle zembulwa futhi zancipha kanjani, amazwekazi aphambukayo futhi ahlanjululwe ngezikhathi ezithile, axhunyiwe futhi akha ama-supercontinentnentnents.
"Ngokwesilinganiso somuntu, konke kuhamba ngamasentimitha ngonyaka, kodwa, njengoba sibona, amazwekazi ayekhona yonke indawo ngesikhathi. Indawo enjalo njenge-Antarctica, esiyibona namuhla njengesifunda esibandayo nesingesihle, lapho siphelele ukuzijabulisa e-Equator, "iSydney University ingeze iSydney Sydney.
Imodeli entsha izovumela ososayensi ukuthi baqonde kangcono ukuthi isimo sezulu kanye nolwandle sebeshintshile kanjani, njengoba izingxenye ezivela emathunjini ziye zasiza ukwethula ukuziphendukela kwemvelo. Ngenxa yalokho, abaphenyi bagubha, umsebenzi wabo, mhlawumbe, bazochaza ukuthi kungani kunempilo emhlabeni wethu.
"Kuyiqiniso, lokwakhiwa kabusha kuhloswe ngawo ukubonisa izici eziphambili ze-Global Tectonics yeminyaka eyizigidi eziyinkulungwane zokugcina, ngakho-ke, azikho imininingwane eminingi kuyo ebingafakwa ezifundeni ngazinye," kusho ababhali bocwaningo bafingqiwe.
Umthombo: Isayensi Enqunu