Talk:Mynydd y Dref

The reference to the quarrying of 'millstone' is curious - should this read '. . millstones were quarried . . '? As a geologist, I'm unaware of a rock type called 'Millstone'.
Geopersona (talk) 04:15, 20 January 2009 (UTC)

Does it not refer to Millstone_Grit ? EdwardLane (talk) 17:49, 11 December 2015 (UTC)

If there were any Millstone Grit in the vicinity it might but this hill is formed principally from rhyolite, a rock of volcanic origin, together with a host of other related rocks from the Ordovician and early parts of the Silurian period, much predating the Millstone Grit which is Carboniferous of course. It may well be that one of the (presumably) volcaniclastic sandstones within this sequence was found to be suitable for making millstones, I suppose. It would be useful to have references for this info. You can view the geological detail at http://www.largeimages.bgs.ac.uk/iip/mapsportal.html?id=1001582 cheers Geopersona (talk) 20:42, 11 December 2015 (UTC)

yes good shout, this seems to confirm your suggestion. EdwardLane (talk) 20:47, 12 December 2015 (UTC)

Well spotted! And v. interesting - that's the first time I've heard of that. thanks Geopersona (talk) 04:59, 13 December 2015 (UTC)

I took a picture of the walls of the quarry so any geologists among us can identify the rock. The Coflein website seems to suggest it's Burrstone (or is that just a colloquial term used for millstones and not just ones made from limestone?) I know little to nothing about rocks but it's clearly full of fossils, or nodules. I'm out of my element, or I'd gladly update the article to include this information.Telenarn (talk) 11:07, 12 October 2017 (UTC)

I know it's been a while but in reply as regards the image. . . they appear to be volcanic nodules and not fossils, lapilli perhaps from the Capel Curig Volcanic Formation - that's supported by EdwardLane's link. BGS identifies the rocks in this areas as being largely volcanic tuffs and rhyolites. Geopersona (talk) 07:33, 20 November 2020 (UTC)

External links modified

Hello fellow Wikipedians,

I have just added archive links to one external link on Mynydd y Dref. Please take a moment to review my edit. If necessary, add {{cbignore}} after the link to keep me from modifying it. Alternatively, you can add {{nobots|deny=InternetArchiveBot}} to keep me off the page altogether. I made the following changes:

• Added archive https://web.archive.org/20070829045543/http://www.bbc.co.uk:80/wales/northwest/sites/nature/pages/volcano.shtml to http://www.bbc.co.uk/wales/northwest/sites/nature/pages/volcano.shtml

When you have finished reviewing my changes, please set the checked parameter below to true to let others know.

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 5 June 2024).

• If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
• If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—^{cyberbot II}_{Talk to my owner:Online} 19:17, 21 January 2016 (UTC)

External links modified (February 2018)

Hello fellow Wikipedians,

I have just modified one external link on Mynydd y Dref. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:

• Added archive https://archive.is/20070619172302/http://www.tlysau.org.uk/item.php?lang=en&id=1215&t=1 to http://www.tlysau.org.uk/item.php?lang=en&id=1215&t=1

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 5 June 2024).

• If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
• If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—InternetArchiveBot (Report bug) 02:24, 10 February 2018 (UTC)