мезозой

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20.04.2008 (06:02) Естественные науки >> Геология
Большой Каньон возник в эпоху динозавров
Недавние исследования Университета штата Колорадо (Болдер) и Калифорнийского Института технологий опровергают традиционную теорию, согласно которой Большому Каньону около 40-50 миллионов лет. Новые открытия в мире геологии указывают на то, что Большой Каньон образовался еще в эпоху динозавров, которые, быть может, когда-то расхаживали по его уступам своей тяжелой поступью. Согласно данным, полученным в результате радиометрического анализа, каньону более 55 миллионов лет. Ученые ...>>


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