Tag Archives: deformation

Class 5; In The Shadow Of The Volcano

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Pucon, Chile

 

Villarrica at dusk, near Pucon, Chile

Kayaking on a volcano

Pucon is a tourist destination, nestled between rugged hills and Largo (Lake) Villarrica in central Patagonia, Chile.  One of its attractions is rivers with a bit of everything for kayakers and rafters, from Class V to Class II rapids and waterfalls, through bush and steep gorges.  Idyllic?  Normally yes, except that the most active volcano in Chile is right on your doorstep – in fact at times it’s in your living room.  Continue reading

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How do we know which way is up? #1. Getting started

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How Geologists Interpret Ancient Environments. 1 Getting started

You are confronted with rock formations that might look something like this…

Folded sandstone exposed on a ridge - great place to examine the rocks

The local geologist tells you that the rocks you see here originally were deposited as sands and muds in shallow seas, where beaches and broad coastal tidal flats passed seawards to deeper waters, and landwards to marshes and scrubby coastal plains across which rivers and streams coursed. How did our geologist figure this out? What is it that geologists see in the rocks that help them paint this picture of an idyllic world that existed so many millions of years ago – a world beyond memory, where, in a different eon, a summer cottage would have been rather nice. Continue reading

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