Ukuqhuma kwamuva kweNtaba iHood kwenzeka nini?
Context:Ukuqhuma kokugcina okuthathu eNtabeni iHood kwenzeka phakathi neminyaka engu - 1 800 edlule kusuka emithonjeni ephakeme engxenyeni eseningizimu - ntshonalanga futhi kwaveza amadiphozithi ayesatshalaliswa ngokuyinhloko eningizimu nasentshonalanga ngasemfuleni iSandy nowaseZigzag. Isikhathi sokugcina sokuqhuma kwenzeka eminyakeni engaba ngu-220 kuya ku-170 edlule, lapho kwakhiqizwa khona ama-dacitic lava domes, ukugeleza kwe-pyroclastic kanye nokugeleza kodaka ngaphandle kokuqhuma okukhulu okuqhuma. I-Crater Rock evelele engaphansi nje kwengqungquthela kucatshangwa ukuthi ingamanxiwa enye yalezi zindlu manje ezonakele. Lesi sikhathi sihlanganisa ukuqhuma okukhulu kokugcina kuka - 1781 kuya ku - 1782 nesiqephu esisha kakhulu esiphela ngaphambi nje kokufika kwabahloli bamazwe uLewis noClark ngo - 1805. Ukuqhuma kwamanzi okuncane kwakamuva kwenzeka ngo-August 1907.
INtaba iHood yagqashuka muva nje eminyakeni engaba ngu-220 kuya kwengu-170 edlule. Ukuqhuma okukhulu kweNtaba iHood kwakamuva kakhulu kwenzeka phakathi kweminyaka ka-1781 kuya ku-1782 futhi futhi ngo-1805. Ukuqhuma okuncane kokugcina kwenzeka ngo-August 1907.