Before I started a geology blog, I used to sporadically blog about geology over at
Skepchick. These days, I blog here at Georneys about geology, and I blog over at Skepchick about other skeptical and scientific things, such as
the premise of the movie "Idiocracy." Occasionally, I will re-post some of my old geology posts from Skepchick. I will also sometimes cross-post on both blogs.
The post below originally appeared on Skepchick in 2006
here.
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| Fold for thought, Western USA, Fall 2005. |
There are shapes, colors, and patterns everywhere, and I marvel in how the same patterns often exist at vastly different scales.
I have found myself looking at a rockface, admiring the small, swirling, black-and-white folds in metamorphic gneiss or migmatite. Looking out at the wider landscape, I often see the swirls echoed. The thick rock layers composing the mountain are folded over and under much in the same way that the layers in the hand sample sized rock at my feet are folded. The rock has three inch folds; the mountain has three mile folds, perhaps.
