I have heard that Portland Stone[0] has a "grain", and that when it's quarried, the orientation is recorded to ensure it's used in the building the right way round.
I'm told that this reduces the rate of decay of the stone.
Can anyone confirm (or refute?!?) this for me?
I'd appreciate boosts for reach, as I'm not sure there are many geologists who follow me.
Thanks.
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@ColinTheMathmo See the penultimate paragraph here. It is not exactly a grain, like in wood, but the orientation of the deposition layers.
https://www.chelseabarracks.com/journal/stories/building-blocks-london-portland-stone
@winenous Fabulous!
it's "grain" in the sense of "having a specific orientation" which in this case is planes rather than fibres, but that's the information I was looking for.
Thank you!