Talk:Igneous rock

message: Can someone help me out with the geological definition of dike at dike?  Extend it to a dike (geology) page if you like...  Thanks.  dave 17:19 16 Jul 2003 (UTC)
Done - or at least started. Dike (geology) --Vsmith 03:19, 11 Sep 2004 (UTC)
thread_title: Dike

message: Well written article, but I'm reluctant to give it better than a B class rating for "WikiProject Geology" until the references are actually cited in the text so we can see where statements came from. --Zamphuor 15:52, 22 April 2007 (UTC)
replies: text: i got helped alot 64.114.197.195 (talk) 16:45, 11 April 2023 (UTC)
thread_title:  B class 

message: I'm a casual user that noticed some vandalism on the page.  I'm going to remove it, but I noticed in the history that this page has had a fair amount of vandalism for some strange reason.  Someone a bit more saavy with the workings of Wikipedia might want to do something about it.  —Preceding unsigned comment added by 71.111.248.218 (talk) 16:00, 20 October 2007 (UTC)
replies: text: Ok, I have tried removing it, let's see if it remains successful. TrondBK (talk) 17:26, 26 December 2010 (UTC)
thread_title:  Vandalism 

message: Something along the lines of:
Porphyritic rocks are classified as either phaneritic or aphanitic according to the groundmass' texture.  Further refinement to the classification is made by adding the adjectives porphyritic or porphyry to the name (i.e. porphyritic andesite or andesite porphyry.)
should be added to either this page or the pages on porphyry and porphyritic texture. Zappa2496 (talk) 07:28, 21 April 2008 (UTC)
thread_title:  Porphyritic classification 

message: the ingeous rock history is cool but the most important subject that relates to that is my science class who is studing that and my teacher he has many things to do with that  —Preceding unsigned comment added by 96.250.153.110 (talk) 19:49, 8 September 2008 (UTC)
thread_title:  respond 

message: at the top of the article it says taht igneous comes from the latin work ignis, but at the bottom it says it comes from the latin work igneus. This needs to be fixed Wumbla (talk) 03:05, 17 November 2008 (UTC)
replies: text:  Decrease in pressure is correct. It refers to the process of decompressional adiabatic cooling of rock as it rises.  This reduction in pressure with decreasing depth, with or without a decrease in temperature, melts the rock to form molten magma. For more details see, for example, https://www.e-education.psu.edu/geosc30/node/685 for an explanation and http://www.geo.cornell.edu/eas/education/course/descr/EAS458/06Lectures/06EAS458-7%20Melting.pdf for the physics and mathematics details. GeoWriter (talk) 20:52, 24 October 2016 (UTC)
thread_title:  Errors on page 

message: First section of this article has been vandalized with crude sexual humor. I'm not sure how to fix this problem.
Also found that when I clicked on the sandbox, a lude illustration came up.  —Preceding unsigned comment added by 174.113.87.224 (talk) 00:09, 29 May 2009 (UTC)
thread_title:  Vandanlism 

message: "igneous rocks can be either intrusive (plutonic), extrusive (volcanic) "
Intrusive/plutonic and extrusive/volcanic are not synonyms! A near surface lava sill is volcanic, but it is not extrusive. A dyke is intrusive, but it is not plutonic.  —Preceding unsigned comment added by 203.38.62.211 (talk) 08:36, 21 November 2009 (UTC)
thread_title:  Volcanic/Plutonic 

message: Do you think this chart would be proper for the page?
http://commons.wikimedia.org/wiki/File:Igneous_Rock_Chart.PNG
There is also one for sedimentary and metamorphic. Andrew Colvin (talk) 00:07, 4 January 2010 (UTC)
replies: text: what are they 196.250.69.111 (talk) 07:49, 8 May 2024 (UTC)
thread_title:  Classification Chart 

message: I tagged the statement that 95% of the crust is igneous and the rest metamorphic or sedimentary. That seems dubious to me - are any rocks at a depth of several km igneous? I can't access the page that is cited, but I can access  this page, which says that 90-95% of the crust is igneous and metamorphic. RockMagnetist (talk) 16:09, 19 March 2012 (UTC)
replies: text: Just checked my copy of the Klein book and the content is verified, however on page 475 rather than 275. Methinks I may have added that and must have typoed the wrong page (or someone changed it ... naw, surely not :) Having done that, I would agree that your source and content looks more reasonable - I'd support the change. Vsmith (talk) 17:59, 19 March 2012 (UTC)

text: what magnetic rocks 196.250.69.111 (talk) 07:52, 8 May 2024 (UTC)
thread_title:  proportion of crust 

message: If I recall correctly old terms for Felsic, Intermediate, Mafic and Ultra Mafic were Acidic, Intermediate, Basic, Ultra Basic. It looks like the Felsic article mentions it
Quote: but I'd have thought there should be a mention somewhere on this page, and I guess it needs a reliable source too. EdwardLane (talk) 02:00, 21 April 2012 (UTC)
thread_title:  Acidic/Basic Felsic/Mafic 

message: I think this section should be added or similar that talks about the physical characteristics of rocks.
RonRodex (talk) 01:09, 12 May 2012 (UTC)
thread_title:  Strength of rocks 

message: I came here looking for a reference to stick into the Volcanism#Forming_rocks section (it probably ought to be called lithification but that rather interestingly redirects to diagenisis with no mention of solidification of igneous material), but I see lots of unsourced bits in this article. I don't doubt they are likely to be correct but I had thought igneous rock was formed by the 'crystalization' of magma/lava - but the lede here says 
There might be a suitable reference in rock (geology)#Rock_classification but it's to a book, so harder to check.
Solidification seems safe to use I agree, but are there igneous rocks that are not crystaline?
Is it volcanic glass we're talking about or have I missed something else obvious? I'll change the volcanism article to say cools and solidifies (as that seems a safe short term solution). The rather stubby Formation of rocks looks to have the same issue (saying 'crystalised' from a magma/melt) using a reference from encyclopedia brittanica. EdwardLane (talk) 11:49, 7 November 2012 (UTC)
thread_title:  solidification not crystalization 

message: There is some kind of protection on the article and I cannot edit it. Can anyone else put this in the "External links " section? The IUGS systematics of igneous rocks It can also be used to source a bunch of stuff in the article. KatieBoundary (talk) 01:31, 13 March 2013 (UTC)
replies: text: Done, seems  good short term but I guess we should just be expanding the article based on that source in the long term. EdwardLane (talk) 17:52, 13 March 2013 (UTC)
thread_title:  Proposed External link - [http://www.utdallas.edu/~aiken/SHAKEBAKE/rockclassification.pdf The IUGS systematics of igneous rocks] 

message: I don't get at all the chart, "basic classification scheme for igneous rocks based on their mineralogy". The chart has a Y axis labeled with "vol% of minerals". The caption is no help since it says:
:If the approximate volume fractions of minerals in the rock are known the rock name and silica content can be read off the diagram.
So does that mean that a rock can have "0% minerals" and simultaneously be composed of the minerals, amphibole or olivine? Well, that's what the chart appears to be claiming. -- KarlHallowell (talk) 17:01, 28 November 2013 (UTC)
replies: text: The scale indicates the percentage of each mineral in the overall rock. It always adds up to 100%, which is why the overall diagram is rectangular.  The coloured areas within the diagram indicate the proportions of each constituent mineral – the height of each curved stripe (when read on the % axis) indicates their proportion. Andy Dingley (talk) 01:13, 29 November 2013 (UTC)
thread_title:  Don't get classification scheme chart 

message: This page is in serious need of references. Chestmas (talk) 17:31, 2 May 2015 (UTC)
thread_title:  References 

message: Hello fellow Wikipedians,
I have just modified one external link on Igneous rock. 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://web.archive.org/web/20120113152818/http://geology.cnsm.ad.csulb.edu/people/bperry/IgneousRocksTour/IntroToIgneousRocks.html to http://geology.cnsm.ad.csulb.edu/people/bperry/IgneousRocksTour/IntroToIgneousRocks.html
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
Cheers.—InternetArchiveBot (Report bug) 17:06, 11 November 2017 (UTC)
thread_title:  External links modified 

message: An igneous rock is formed from the cooling lava. 2601:C6:8400:D850:3D9E:FA12:6153:E66A (talk) 23:39, 12 January 2022 (UTC)
thread_title:  Igneous rock 

message: change: Igneous rock is formed through the cooling and solidification of magma or lava. to: Igneous rocks are formed through the cooling and solidification of magma or lava. Ertrdfcvb (talk) 22:56, 5 February 2023 (UTC)
replies: text: 💜  melecie  talk - 01:24, 6 February 2023 (UTC)
thread_title:  Semi-protected edit request on 5 February 2023