Imfihlo Yohlangothi Olungabonakali Lwenyanga

Kungani uhlangothi lweNyanga “olumnyama” lubukeka luhlukile? Kwakuwumehluko wezinga lokupholisa okwenze ingxenye yobuso beNyanga yabonakala eMhlabeni yahlukahluka kakhulu, futhi ingxenye engabonakali yayinothe kakhulu ngezakhiwo ezifana “nolwandle.” Lokhu kwaphinde kwathonywa uMhlaba, okwathi esikhathini sokuqala sokuphila kwayo yomibili imizimba yayifudumeza uhlangothi olulodwa, kanti olunye lwaluphole ngokushesha.

Namuhla, inkolelo-mbono ekhona ukuthi iNyanga yakhiwa ngokushayisana koMhlaba nomzimba olingana ne-Mars obizwa ngokuthi i-Theia kanye nokukhipha isisindo emzileni wawo. Kwenzeka cishe eminyakeni eyizigidi eziyizinkulungwane ezingu-4,5 edlule. Yomibili imizimba yayishisa kakhulu futhi isondelene kakhulu. Nokho, nangaleso sikhathi iNyanga yayinokujikeleza okuvumelanayo, okungukuthi, yayihlala ibhekene noMhlaba ngakolunye uhlangothi, kuyilapho olunye uhlangothi luphola ngokushesha okukhulu.

Uhlangothi olungabonakali "olunzima" lwashaywa ama-meteorite, imikhondo yawo ebonakala ngendlela yama-craters amaningi. Ikhasi esilibukayo "laliwuketshezi". Inezinsalela ezimbalwa zama-craters, ama-slabs amakhulu akhiwe ngenxa yokuphuma kwe-basaltic lava, ngemva komthelela wamadwala asemkhathini.