Talk:Obduction

message: What's the hell difference between obduction and subduction? (preceeding comment unsigned and of unknown age, presumably before 7 October 2010)
:Obduction is the process by which oceanic crust is emplaced (basically dumped) onto the continental crust, subduction is the 'standard' end for most oceanic crust, where it is brought down into the mantle and recycled.Jackdann88 (talk) 13:34, 7 October 2010 (UTC)
thread_title:  Obduction vs Subduction 

message: I found the previous version to be inconsistent and essentially unreadable. Hopefully I have improved. More work needed.Vsmith 02:30, 4 Oct 2004 (UTC)
replies: text: would it be valuable to have a 'cartoon' of how an ophiolite is emplaced? I found it easier to understand when someone drew a picture!Jackdann88 (talk) 13:35, 7 October 2010 (UTC)
replies: text: What's missing is a general sense of what is going on. There is a lot of geologic jargon but it does not seem to connect to present the concept. The etymologies of the English words selected by the geological flying fickle finger of fate are usually a clue to the geological special meaning. For example, subduction means that one thing is "led under" another. Obduction is a "leading up against" where one land mass does not go under another, but is emplaced against it joining the two. So, if someone could write it according to the general sense that would be a big improvement. What's the matter, are you afraid of a little criticism? Cat got your tongue?Botteville (talk) 09:24, 8 February 2021 (UTC)
thread_title:  Rewrite for clarity 

message: I've nominated the images used in this article for deletion, because they are copyrighted to Elsevier. I will try to come up with some simple cartoons to replace them, but it may take a while. Mikenorton (talk) 18:46, 2 February 2013 (UTC)
thread_title:  Images up for deletion 

message: The references are all from 1971 -76 and thus rather dated. Also the "Dewey, J. F., 1975" ref has an "(in press)" note attached ... seems problematic. I've also removed the 1969 McKenzie ref as it says nothing re: obduction and predates the concept. Vsmith (talk) 21:11, 1 February 2014 (UTC)
thread_title: Reference problems

message: Some diagrams are needed in this article to illustrate the processes. Fig (talk) 16:59, 4 September 2014 (UTC)
thread_title:  Diagrams needed 

message: After adding the image Subduction-en.svg to the French version of this page, it was promptly removed by User:Géodigital, an editor with an education in geology and a good knowledge in the field of plate tectonic. During our discussion about the reason of this suppression, he kindly explained me why this diagram is incorrect and misleading: hereafter, as a feedback for Wikipedia English, a translation of part of our discussion in the French language (quote). 
"Obduction occurs when the stresses are reversed during continental collision (Alpine model) or by the covering of a continental block driven by an oceanic lithosphere in subduction (New Caledonia). But in both cases the illustration and its legend invoking the accretionary wedge of a subduction is wrong. The basic error appearing in the introduction of this article is to relate the process of obduction to the formation of the accretionary wedge which takes place during an oceanic subduction. Moreover, the majority of the cited references do not mention this process. The use of a figure presenting a subduction zone is therefore misleading and does not conform to scientific knowledge which suggests that the obduction processes take place after the phase of oceanic subduction." (translation of a part of our discussions in French (source: Discussion utilisateur:Géodigital#Obduction : retrait de la figure Subduction-fr2.svg)). 
So, the contents of the page on obduction, and especially its introduction mentioning an accretionary wedge, need to be corrected taking into account the comment of User:Géodigital. Does someone know a better figure that could replace the present one (Subduction-en.svg)? A sad, but logical, alternative would be to simply remove this nice but misleading image (showing an accretionary wedge) from the page, even if this image was a finalist in Picture of the Year 2017 and was also selected as picture of the day on Wikimedia Commons for 4 March 2019. What do you think? Best regards, Shinkolobwe (talk) 22:46, 23 October 2022 (UTC)
thread_title:  Misleading image of subduction showing an accretionary wedge