Portal:Earth sciences/DYK/13

Graphic showing when regions of the Tibetan Plateau reached their present-day elevation

... that during the collision of India with Asia, the southern part of the Tibetan Plateau achieved its high elevation before the northern part (graphic pictured)?
... that the oldest part of the Western Block of the North China Craton formed 2.7 billion years ago?
... that the Superior Craton covers central Canada?
... that after the devastating 2010 and 2011 Christchurch earthquakes, the New Zealand government "red-zoned", purchased, and demolished 8,000 houses?
... that tropical cyclones leave deposits in lakes that can be used to reconstruct past cyclonic activity?
... that a series of eruptions of Mount Takahe 17,700 years ago may have resulted in an ozone hole?