ChatterBank1 min ago
Marbled sandstone?
2 Answers
Today I came across a sandstone hill which has been cut to make a road, and the cross-section of sandstone has occasional hard white layers typically an inch or two thick, looking a bit like marble, spread throughout the hill, and at all sorts of angles. I was wondering how these layers of what is a completely different substance came to be in the sandstone. I realise this is probably a basic GCSE geology question, and I'm about 3 times the age of the average schoolboy and never did geology at school, sorry!
Answers
1 to 2 of 2
Best Answer
No best answer has yet been selected by aadenny. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.
-- answer removed --
Could be salt if it was a desert sandstone. Could also be other white coloured minerals which have percolated through the sandstone at a later date. Additionally, it could be a metamorphic rock which was originally a sandstone with limey bands/beds. These lime beds will be a form of marble.This metamorphic action could also pass minerals through the sandy beds under pressure. Sorry if I've confused you further. Would need to see it to tell you better.
1 to 2 of 2
Related Questions
Sorry, we can't find any related questions. Try using the search bar at the top of the page to search for some keywords, or choose a topic and submit your own question.