News articles tagged with 'zircon'
[chronologically, reverse order]
Andes Mountains are older than previously believed
— 16 May 2009 11:27 | Geology and palaeontologyThe geologic faults responsible for the rise of the eastern Andes mountains in Colombia became active 25 million years ago - 18 million years before the previously accepted start date…
Plate tectonics started over 4 billion years ago
— 27 Nov 2008 10:38 | Geology and palaeontologyA new picture of the early Earth is emerging, including the surprising finding that plate tectonics may have started more than 4 billion years ago - much earlier than scientists had…
Ancient mineral shows early Earth climate tough on continents
— 14 Jun 2008 13:06 | Geology and palaeontologyA new analysis of ancient minerals called zircons suggests that a harsh climate may have scoured and possibly even destroyed the surface of the Earth's earliest continents…
Mineral ages show Blue Mountain rocks related to Klamath, Sierra Nevadas
— 29 Oct 2007 18:05 | Geology and palaeontologyNew evidence, based on mineral dating, suggests that rocks of the Blue Mountains, the oldest geological formation in Oregon, may have been derived from the Klamath and Sierra Nevada…
News articles tagged with 'zircon' — 4
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