[Tagging] recommend tagging of volcanos as ways rather than nodes

John Willis johnw at mac.com
Tue Mar 31 22:57:48 UTC 2015


Mt Fuji is a very special volcano. I should have used another example, but everyone knows Fuji as a "cone".

Fuji is a stratovolcano on top of a shield volcano, hence the similar sloping sides at the bottom. However, the cone from the halfway point is much steeper.

Pic from halfway up. Most of the mountain is about 30-45 degree angle. 

https://m.flickr.com/#/photos/javbw/16807777459/
https://m.flickr.com/#/photos/javbw/16807777519/

Geologic explanation for mt Fuji, one of my favorite websites -

http://www.glgarcs.net/topics/fuji/fuji_1.html

Stratovolcanoes and calderas that are old and erode away also develop softer sides and a gentle slope like Mt. Akagi, which I like next to on the soft debris slope on the center left of the pic. It exploded a couple hundred thousand years ago ( and grew little cones and peaks since). That entire lump is Mt Akagi - it is not a range - hence the peak naming issue.

http://en.m.wikipedia.org/wiki/Mount_Akagi (my photo for Akagi) 

Volcanoes come in all shapes and sizes, but shield and stratovolcanoEd are the two big ones.

With the amount of material Vesuvius put out, if it had a different lava type, it would be *a lot* taller, if I understand things correctly. 

And all of this is "as I understand it". Maybe some part is incorrect. 

Javbw. 

Sent from my iPhone

> On Mar 31, 2015, at 5:50 PM, Martin Koppenhoefer <dieterdreist at gmail.com> wrote:
> 
> 
> 2015-03-31 0:14 GMT+02:00 John Willis <johnw at mac.com>:
>> while some of them are iconic cones,(Fuji), and some are shields which are very flat (Vesuvius),
> 
> 
> sorry for picking this, because I am aware this was not the main content of your message, still as living personally in relative proximity to the Vesuvius I have to say that I don't understand you here. Have a look at these pictures:
> 
> http://it.wikipedia.org/wiki/Antiappennino_campano#/media/File:Vesuvio_da_via_Nazario_Sauro.jpg
> 
> http://en.wikipedia.org/wiki/Mount_Fuji#/media/File:FujiSunriseKawaguchiko2025WP.jpg
> 
> To me the inclination seems similar.
> 
> Cheers,
> Martin
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