I was reading Callan's fantastic summary of his geoblogosphere survey and was reminded about how fun geopuzzles can be. So, this week's Friday Field Foto is a geopuzzle.
Your goal is to be the first to describe what is going on with this rock ... I'm gonna leave it at that, no clues.
To make it a bit more difficult there is no scale shown (on purpose).
Happy Friday!
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__UPDATE (9/30/2008): __Answer!
Silver Fox basically got it right ... and Andrew knows me too well - these are, of course, turbidites. This particular image is of mudstone-rich deposits with one silty bed in it. Stratigraphic up is to the left and the entire image is about one meter across.
The diagonal lineaments (from upper left to lower right) are fractures that, we were told, are related to the uplift of these ~600 million year-old rocks during the Mesozoic. The very obvious, nearly horizontal lineaments are very recent glacial striations.
If you want to learn more about this outcrop (Canadian Rockies), see this postfor details and more photographs.
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