Posted: Nov 06, 2018 8:06 am
by Adco


rock.JPG


rock.JPG (477.36 KiB) Viewed 2004 times




The white inclusions on the upper left are the main items of discussion. They are in an old exposed area. The rock has a blue tinge to it because it hasn't had enough time to weather.

The dark brown marking through the center is the old ground level. I excavated the rocks and soil away to turn the area into a fireplace.

The lower right section of the pic shows pit holes where the white inclusions used to be but are now missing. This thread is about these missing white pieces. I made an assumption that because they were below the water line, the retained water was dissolving the white inclusions over a long period. My mistake was calling the white pieces quartz.

In the first pic I posted, which shows the entire fireplace area, down at the new ground level, these white inclusions are still there. It seemed as if the water only penetrated about 1m before finding a new path, perhaps through a crack in the rocks.

I know this all seems trivial and consuming but it is fascinating to see the geology of the area that was only visible after it got exposed. I had to remove at least 20 tons of rock from that area! A huge mission but we get many hours of enjoyment from it and it was worth the effort.