A kowane lokaci, fitilun wuta sun sanya tsoro a cikin mutane, amma akwai yankuna masu yawa inda aka tilasta mazaunin gida su zauna tare da wadannan ƙattai masu haɗari. Daga wannan labarin za ku koyi abin da wutar lantarki ta fi girma a Amurka.
Arewacin Amirka
A wannan sashi na nahiyar shine dutsen mai fitattun wuta, wanda shine mafi girma a duniya , kuma ba kawai a Arewacin Amirka ba. Yana da game da Yellowstone caldera - dutsen mai tsabta, wanda yake a jihar Wyoming, a cikin National Park. Tsawonsa yana da mita 2805. Yana rufe wani yanki na kilomita 3,960, wanda shine kashi ɗaya bisa uku na yankin na National Park. Wannan yanki yana samuwa a sama da wuri mai zafi, inda ake motsi motsi na dutse mai tsabta na rigar zuwa fuskar ƙasa. Yau wannan yankin Yellowstone ya rufe wannan batu, amma shekaru da yawa da suka gabata ya kasance ya haifar da kafa gabashin sashin layi bayan ƙirar manyan tsaunuka.
Masana kimiyya sun gano magungunan wannan babban dutsen mai tsabta a cikin shekarun 1960s, wanda ke jagorantar bayanan bayanai daga tauraron dan adam. Ya bayyana cewa ɗakin ƙarƙashin ma'adanai yana riƙe da babban kumfa na incandescent magma a cikin bowels. Yanayin zazzabi a cikinsa ya bambanta a cikin digiri 800. Wannan shine dalilin da ya sa daga cikin ƙasa mai ciki zuwa ruwan saman ruwa ya tashi, da kuma maɓuɓɓugar ruwan zafi sune tsanani, watsar da carbon dioxide da girgije na hydrogen sulfide.
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Kamar yadda masana kimiyya suka fada, babbar rudani mai karfi na Yellowstone caldera ya faru fiye da miliyan biyu da suka wuce. Wannan ya haifar da rushewar tsaunukan tsaunuka, wanda ya haɗu da kashi 25 cikin 100 na yankin Arewacin Arewacin zamani tare da lakabin tuddai. Hakan na biyu ya koma shekaru 1.27 kafin zamaninmu, kuma na uku ya faru shekaru 640,000 da suka shude. Sa'an nan kuma an kafa babban zagaye mai zurfi tare da radius na kilomita 150, wadda ake kira caldera. Wannan ya faru ne sakamakon rashin nasarar da aka samu a kan dutsen mai girma. Bisa ga masana kimiyya, yiwuwar cewa dutsen mai tsabta mai karfi zai iya tashi shine 0.00014%. Babu yiwuwar yiwuwa, amma akwai.
Kudancin Amirka
A cikin Kudancin Amirka, mafi girma dutsen mai tsabta shine tsaunin wutar lantarki Cotopaxi, wanda girmanta ya kai 5896 mita. Hanya na biyu shi ne dutsen Sangay (mita 5,410), kuma na uku zuwa Popocatepetel na Mexico (5452 mita). Littafin Rahotanni na Guinness ya bayyana cewa babbar dutsen mai suna Ochos del Salado, wanda ke kan iyakokin Argentina da Chile, amma an yi la'akari da shi. A cikin duka, a cikin kudancin kudancin Amirka, akwai ƙananan tsaunuka 194 da yawa, mafi yawansu ba su da yawa.
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