Talk:Boulder
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To-do list for Boulder:
Mention one of the most famous boulders: Indy's Priority 4
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Untitled[edit]
Question: does a grain mean the same thing in geology as it does in Material science? If so, a grain 10 inches in diameter seems impossibly large! I would not expect to find this naturally (Neutron Stars, etc. notwithstanding). 142.157.103.144 (talk) - 15:27, 21 October 2009 (UTC)
- "Grain" is used not in the sense of grains in metals or crystal but in the sense of grains in granular materials like clay, sand, gravel, etc. mike4ty4 (talk) 00:39, 24 January 2010 (UTC)
- 'Clast size' is probably a better term, although I see that Wentworth's original 1922 paper also refers to 'fragments' or 'pieces'. However, 'grain size' is the term typically used for sediments or rocks. Mikenorton (talk) 20:56, 6 July 2015 (UTC)
Size distinction[edit]
I question the statement "In British English a rock is bigger than a boulder" Neither the Cambridge Dictionary (https://dictionary.cambridge.org/dictionary/english/rock), the Macmillan Dictionary (https://www.macmillandictionary.com/dictionary/british/boulder) or the Dictionary linked in the sources (https://www.dictionary.com/browse/rock) give reason to believe that. Just the opposite, the first two dictionaries define a boulder as "a very large rock" (https://dictionary.cambridge.org/dictionary/english/boulder & https://www.macmillandictionary.com/dictionary/british/boulder) which to me is the opposite of the statement in question. 2003:C9:672B:9F59:3C4A:50D5:A78D:21E (talk) 21:40, 27 June 2020 (UTC)
I suggest removing the statement at this point. Tankpiggy18 (talk) 17:06, 10 April 2022 (UTC)
- I founnd the statement that a boulder is a rock fragment with size greater than 25.6 cm (10.1 in) in diameter surprising though it apparently has a source - on looking back though, this started as 256mm / 10 inches which makes more sense - yet another example of the conversion template producing nonsense. Can it be fixed by someone familiar with these things? Geopersona (talk) 05:23, 23 March 2024 (UTC)
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