User talk:Mikenorton

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Your place or mine ...?

I generally prefer unbroken discussions. If you leave a comment for me here, I will most likely respond to it here — my talk page — as an effort to keep the entire conversation in one place. Similarly, if I leave a comment on your talk page, please respond to it there.

At the same time, feel free to send an alert to me on this page about a comment you have left elsewhere.

Thank you!

Please tell me where I can send you message — Preceding unsigned comment added by Ambrishseo (talkcontribs) 08:46, 15 September 2016 (UTC)


Welcome!

Hello, Mikenorton, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Here are some pages that you might find helpful:

I hope you enjoy editing here and being a Wikipedian! Please sign your name on talk pages using four tildes (~~~~); this will automatically produce your name and the date. If you need help, check out Wikipedia:Questions, ask me on my talk page, or place {{helpme}} on your talk page and someone will show up shortly to answer your questions. Again, welcome!  Wow youve been doing all that editing in an important area and no one has said g'day (saw your work on Perth basin) anyway looks like youre doing well! SatuSuro 10:44, 17 October 2006 (UTC)

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Grand Parade[edit]

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Much thanks[edit]

Thank you so much for your help at Mary Kessell. I left last night with the intention of making additional corrections today and was pleasantly surprised to see it in the queue (thanks to your work). Much appreciated. All the best, France3470 (talk)

Thanks for fixing my mistake[edit]

Hi, thanks for fixing my accidental mistake on removing the Category:Megathrust earthquakes from the Megathrust earthquake article, I was actually intending to do that for another article that didn't belong in the category and accidentally did so for the article. My mistake. Stormchaser89 (talk) 011:19, 5 May 2015 (UTC

Galileo[edit]

Don't get involved in the Galileo articles.

Passive Margins: Brazilian Margin[edit]

Hi Mikenorton, I didn't add the Brazilian Margin to the list I think I just reformatted the list when I added other entries. I think you are right that it would be more correct to just classify the south part of this margin as volcanic i.e. from where the SDRs are visible (South of -20Deg)? The paper 'South Atlantic volcanic margins' Gladczenko et al., (1997) in the Geological Society of London Journal has a good map on Figure 1. If you don't have access to this paper I can send you a copy. Alewisp14 (talk)

On formatting M[edit]

Regarding the symbol M used for earthquake Magnitude: do we have any notions of best practice on how it should be formatted? (E.g., italic or straight, spaced or closed-up, ??) Might there be any interest in having a template to handle the details? ~ J. Johnson (JJ) (talk) 00:26, 12 April 2016 (UTC)

Mesozoic[edit]

Hi, Mike Norton -- I just wondered what you thought of the recent edits to Mesozoic: this and the one right before it. I don't think "ca." is needed for such large numbers, do you? Also, the use of "prelude" as a verb is quite unusual:

  • preludes to the lush Jurassic Period.

Does that sound right to you?  – Corinne (talk) 03:38, 15 April 2016 (UTC)

Hi Corinne, I've removed the "ca."s but added "roughly" or "about' as the numbers that divide the subdivisions are not as precise as quoted by the ICS. I also changed "preludes" to "precedes" and removed the older "lush" bit. Those edits overall improved things I think. Mikenorton (talk) 09:04, 15 April 2016 (UTC)
It's much better now. Thanks. I'm wondering whether "roughly" shouldn't be right before the first number in the ranges. If it is a synonym of "about", or "approximately", and you've put "about" right before the first number in another range, then shouldn't it be in the same place? "Ranges roughly from X to Y" or "ranges from roughly X to Y"? I'm on the fence, but I think the second one sounds more colloquial.  – Corinne (talk) 15:20, 15 April 2016 (UTC)

Hello[edit]

Hello, I have some information about speleologists who investigated Kruber Cave in 60s. You see, the thing is that 'Krubera' wrong name. Is correctly Kruber Cave (see Alexander Kruber). Krubera Cave is Russian form (see Пещера Крубера [Peshera (cave) krubera) — Preceding unsigned comment added by 94.240.206.224 (talk) 14:57, 25 April 2016 (UTC)

You should raise this at the article talk page - Talk:Krubera Cave. I do note however, that most of the english language sources use the spelling currently used in the article name. We can only go by the sources. Mikenorton (talk) 23:30, 25 April 2016 (UTC)

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Answer to a question in which respect is peridotite metamorphic[edit]

Metamorphic processes involed in peridotite formation are

  • partial melting
  • phase transitions (garnet to spinel, spinel to plagioclase)
  • high temperature deformation (very important!These rocks have metamorphic texture). Pioneering work is done by Nicolas, French professor in late 70tie,s I think, I will add reference later.
  • and many others I can think later

These methamorphic processes occur in earth mantle. The most peridotite exposed on Earth surface are of the mantle origin.[1]

The rocks of earth’s mantle which are metamorphosed have been igneous rocks form by other igneous processes, from magma oceans in early earth history. I will try to expand the peridotite wiki in this respect if I have enough time. It is kind of priority, although I have other priorities... Obradow (talk) 16:04, 25 May 2016 (UTC)

OK, thanks Obradow, I understand now - I have a copy of Nicolas and Poirier (Crystalline plasticity and solid state flow in metamorphic rocks) on my bookshelf. The problem as I see it with calling it a metamorphic rock is that in most cases the peridotites that we see at the surface are from the mantle lithosphere. Although they are clearly deformed, tectonites I would call them, they don't have a changed mineralogy. Some would call them metamorphic, but I'm not so sure, although they can clearly be metamorphosed, that still makes them a metamorphosed igneous rock, rather than primarily a metamorphic rock. If you have a good source that describes them as metamorphic, then fair enough. Mikenorton (talk) 20:48, 25 May 2016 (UTC)

Hey THANK you Mikenorton for asking interesting question! Lets do following. Lets find the definition of metamorphic rocks. Wiki has to offer : Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means "change in form". [2]


Textbook example [3] states that any methamorphism includs all changes that affect rocks as resalt of chnages in pressure, temerature or composition of fluids in rock. It is then further stated that this occurs in sedimentary, igneous and even former metamorphic rocks. So strictly speaking mantle peridotites are mehamorphic rocks. There must be textbooks with even more clear definition.

Well the upper mantle peridoties are clearly special. Maybe they should be new division of rocks of rocks on planet earth : Earth's Core rocks, Earth's Mantle rocks, and Earth's crust rocks. (: Then peridotites would be even more important (: Their origin is unique in the sense that mantle was formed in earth early history (please somebody help, I know I read that somewhere), Earth was liquid at one point (please somebody expand this), after separation of core, earth mantle than crystallised, after that, it did changed it composition, texture by mehamorphic melting processes, this is how oceanic and partly continental crust is formed. If I get time I would like to learn about this and write what I learned. Just as teaser you can think about mantle peridotites as some previous peridotite which lost melt to create earth's crust.Obradow (talk) 21:53, 25 May 2016 (UTC)

I've reverted User:Obradow's edit in the Peridotite article about peridotite being a metamorphic rock. I've explained why, and offered an invitation for comment, at Talk:Peridotite#Igneous or metamorphic rock. GeoWriter (talk) 21:30, 27 May 2016 (UTC)
That sounds like a good plan, thanks. Mikenorton (talk) 21:36, 27 May 2016 (UTC)

References

  1. ^ Hall, Anthony (1998). Igneous petrology (2. ed., reprinted. ed.). Harlow: Longman. ISBN 9780582230804. 
  2. ^ Dictionary.com entry
  3. ^ Philpotts, Cornelis Klein, Anthony R. (2013). Earth materials : introduction to mineralogy and petrology (Reprinted with corrections. ed.). New York: Cambridge University Press. ISBN 9780521145213. 

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Primary School[edit]

Perhaps you can help me about the categories...

I inherited of the Primary School project, which aims at improving a selection of articles considered relevant to Primary Education. As part of this project, I need to follow up do quality assessment, hence my adding the WikiProject to the talk pages of those articles (slightly over 200).

But the WikiProject Primary School was declared as a sub-project of South Africa WikiProject... so the problem I have is that I want to actually put the Primary School Project in the talk page to follow up quality, but not really the South Africa WikiProject. But I have no idea how to do it. I tried to find solution to only display one but not the other, but I could not find out how to do it. Practically, I do not even really care if the PP Projects is visible on the talk page. I only need to tag the pages so I can follow them for the quality assessement.

Do you have any idea how to do that ? Can you help or suggest directions ?

My alternative is to entirely remove the Primary School Project from the South Africa fatherhood... but am not sure if that is ok to do that and will obviously takes me a huge amount of time to fix everything. Any idea ?

Anthere (talk)

My apologies first of all for messing up my edit summary - when I referred to categories I meant WikiProjects (WPs) - that's what I get for trying to fit in a quick edit during my my lunch hour. To add a WP to an article it really needs to belong there, or we can end up with tens to hundreds for an article which would not be appropriate. I'm afraid that I don't know much about sub-projects, just the two that I'm involved in, WP Geology and WP Earthquakes, which don't, as far as I'm aware have, have subprojects. A good place to ask might be at the talk page of Wikipedia:WikiProject Council/Guide, but I see that you already know about that. Mikenorton (talk) 17:36, 6 July 2016 (UTC)

Rfc?[edit]

There's a bunch of material to cover, but it would be appreciated if you could go over it and comment at Talk:Earthquake_prediction#RfC re neutrality/POV issues. ~ J. Johnson (JJ) (talk) 23:01, 9 July 2016 (UTC)

Hi JJ, I've already spent hours looking at "natural time" references and failed to come to any definite conclusions other than we're a little early in the history of the approach to be sure about anything. I will try to come up with something at the Rfc. Mikenorton (talk) 10:43, 10 July 2016 (UTC)
Thanks. Yeah, it is rather mind-boggling. (Don't get sucked down the drain!!) Even though I am not competent with large swaths of physics and mathematical analysis, yet I feel that my own failed attempts to grapple with any substance in those articles is less a reflection on my competence (or lack of) than on a lack of substance to grapple. That kind of stuff seems to be a counter-demonstration of the old saying that "you can't shine s**t". ~ J. Johnson (JJ) (talk) 23:14, 11 July 2016 (UTC)

Precious anniversary[edit]

Four years ago ...
Cornflower blue Yogo sapphire.jpg
knowledge of earthquakes
... you were recipient
no. 177 of Precious,
a prize of QAI!

--Gerda Arendt (talk) 05:52, 10 July 2016 (UTC)

Thanks again Gerda. Mikenorton (talk) 10:44, 10 July 2016 (UTC)

Kaolin Deposits of Charentes Basin, France[edit]

Hello again, The article Kaolin Deposits of Charentes Basin, France has been tagged for various problems and would benefit from a geologist's attention. Please have a look if you have time.--Johnsoniensis (talk) 08:41, 31 July 2016 (UTC)

Hi, I've begun to take a look, but not sure how much time I can spend on it. I see that the original creator of the article is probably M.Koneshloo, who wrote the paper (with J-P Chiles) in the 'Further Reading' section - whole sections are verbatim and I'm not quite sure how to handle that. Mikenorton (talk) 13:32, 31 July 2016 (UTC)
Thank you; it is outside my range of knowledge but it turned up when I was categorizing a Commons image of Wenford Dries. I will look at it again tomorrow as the Conflict of interest issue is more important than the problems identified already.--Johnsoniensis (talk) 13:41, 31 July 2016 (UTC)
I have moved the article and added a notice about possible copyright violation so I think there is no need for further action except by an editor who has experience in dealing with that issue.--Johnsoniensis (talk) 15:09, 1 August 2016 (UTC)

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Bowland Shale[edit]

Hi Mike - you tweaked this unit where mentioned in the Geology of Lancashire article that I've been editing (rather bit by bit!). I'd thought to include the former name (introduced as 'older texts') so as to explain the occurrence in literature of the name in different forms - did I get it wrong? cheers Geopersona (talk) 20:26, 6 August 2016 (UTC)

No not at all, I've adjusted it to link to the earlier mention of the unit and restored the 'Group'. More haste, less speed as they say. I noticed that the Bowland Shale Formation link in your new Trawden Limestone Group article was red, and thought that I should make a start on that one, seeing as there's so much interest in its potential exploitation for Shale Gas. I should be able to expand it over the next few days. Mikenorton (talk) 20:46, 6 August 2016 (UTC)
Thanks. And yes, it would be good to see that expansion to cater to the present interest. Best wishes Geopersona (talk) 09:52, 7 August 2016 (UTC)
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On the magnitude of Italy's quake[edit]

Hi, out of curiosity, I went to dig deeper into how the magnitudes are computed, and in particular which stations are used. You can find the complete data from the two agencies in XML format: INGV and USGS, and here you can find the meanings of the networkCode attribute of each station's measurement. With a couple of grep, sed and uniq on linux command line, it seems indeed that USGS only used a subset of the Italian stations and based most of its findings on US and Canada based stations. Also, it is not clear to me how the two agencies computed the error on their estimates. USGS quotes errors more than an order of magnitude smaller than INGV, which, as a physicist, sounds a bit fishy. I thought I would share these few observations with you.--Japs 88 (talk) 13:21, 26 August 2016 (UTC)

The USGS uses several different ways of calculating magnitude, even within moment magnitude - they quote Mwb, Mww, Mwp, Mwc, Mwr and so on. The magnitude that they quote for the Italian earthquake is a Mwp (for an explanation of what all these version of Mw are see here). I imagine that the quoted error is just the error inherent in that particular methodology, rather than the uncertainty regarding the actual total energy release of the earthquake, which is the intent of the moment magnitude scale. The bigger the earthquake, the less it matters that you have local station coverage, but for M6 it probably makes a bit of a difference. The USGS also quote magnitude estimates with each of the moment tensors, these give Mww, Mwc, Mwb & Mwr values of 6.2, 6.2, 6.1 & 6.1 and a wider range of hypocentral depths. It doesn't help us that there is normally no single magnitude estimate for an event - people still argue about the magnitudes for the 1960 Chile, 2004 Indian Ocean and 2011 Japan earthquakes. It would be interesting to know which approach INGV use to calculate their estimate, but it probably doesn't matter as I think that using the INGV estimate is the way to go, with a discussion of other estimates in the text (as we currently have it). These different estimates are neither right nor wrong, but having a "preferred" option is perfectly fine I think. Mikenorton (talk) 16:01, 26 August 2016 (UTC)
Thank you for your explanations. Because of all this misunderstanding, I'm going to write to the authors of the INGV analysis and ask them if they can write a blog post about it in their institutional pages. It would be useful to have a reference for cases like these. For the USGS uncertainty, I completely agree with you that the it is statistical only, and doesn't account for systematics. In the meanwhile the page has been reverted to 6.2 ± 0.0something, but I can't be bothered to keep discussing this issue, and I'll just let the US-centric views prevail. Thanks again for sharing your point of view with me.--Japs 88 (talk) 08:23, 27 August 2016 (UTC)

Regarding blacklisting of mapsofworld.com[edit]

Hi Sir,

Somehow I found a site (mapsofworld.com) with good maps and information, wanted to share its some information on wikipedia, but I found it is blacklisted since 2007, I do not understand why this site blacklisted, as it is good for the user, please let me know how I take it out from blacklist — Preceding unsigned comment added by Ambrishseo (talkcontribs) 08:49, 15 September 2016 (UTC)

You have already asked for delisting at the right location. People there should explain why it was blacklisted. Mikenorton (talk) 09:00, 15 September 2016 (UTC)

hello[edit]

Trophy.png hello
The 48 seconds was "very fast severe constant shaking, knocking over walls etc etc...", not shaking as you described it

You interview "anyone" that lives in Sylmar and was awake or semi-awake during the earthquake they will all agree. I lived in Sylmar. If the edit is not done within the next 20 years or so, the accuracy of this earthquake will be lost forever. I am people that lived in Sylmar are the best source of information. The USGS has this but you doubt the shaking severity obviously. Dalewob (talk) 00:57, 11 October 2016 (UTC)

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List of earthquakes in New Zealand[edit]

Hi, I hope this message finds you well. There are many lists that are lacking, but this one was just consolidated and it could use a proper tectonic setting section. You know, something that readers can really sink their teeth into. I'm sure there are other obligations or tasks to attend to, so just throw this one on the back burner as something to maybe tackle one day. It seems like there would be quite a bit to cover, but I was thinking of one or two paragraphs that could be the first primary section. Dawnseeker2000 21:12, 24 November 2016 (UTC)

Hi Dawnseeker2000, that's something that I should be able to do, although I've been having one of my quieter periods on Wikipedia recently. I shouldn't need to do too much reading around as I did plenty back when I did the various fault system articles. There will be some new stuff to look at, particularly in the Christchurch area. Mikenorton (talk) 22:24, 24 November 2016 (UTC)