Tuesday, September 26, 2023

This striking Marble outcrop was fun to chance upon!

There's an anomalous marble formation just south of Berlin NY on rt 22, quite surprising to chance upon it.  I believe the story is that it's part of an older part of the continent. then the local shales, Rensselaer Plateau graywacke etc.. called the Taconic Klippe got shoved over that part of the continent.  this small patch of marble managed not to get covered!


here we see a grand outcrop of very light colored (white/grey, hint of blue) marble with lots of criss crossy fractures and some layers are quite weathered into dozens of pages like a book

Here we see a section that has more blocky fracture than layered weathering.

Here I'm holding a chunk that has fallen off of one of the weathered layers from the first picture and the actual rock has weathered into mm thin sheets like pages of a book.  If I let go, it falls to pieces!

Here is a block with more conchoidal fracture, not weathered and quite hard.  Tho... you can see vague roughly parallel lines in it that you can imagine will one day weather into the pages of the image above.


The southern end of this outcrop got a little messy.  I'm not sure what I'm looking at.  It was VERY hard and difficult to get samples.  Some quartz in there maybe.


Is that quartz?  I must go back and investigate.




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