What is the exposed core of an extinct volcano called?

  • 5 Replies
  • 3912 Views

0 Members and 1 Guest are viewing this topic.

*

Ashlyn

  • Guest
Ashlyn asked the Naked Scientists:
   
What is it called when the softer rock around the hardened magma in a volcano's pipe is worn away?

What do you think?
« Last Edit: 14/12/2010 09:30:04 by _system »

*

Offline JimBob

  • Global Moderator
  • Neilep Level Member
  • *****
  • 6564
  • Moderator
    • View Profile
What is the exposed core of an extinct volcano called?
« Reply #1 on: 14/12/2010 23:03:05 »
A volcanic pipe.
The mind is like a parachute. It works best when open.  -- A. Einstein

*

Offline Geezer

  • Neilep Level Member
  • ******
  • 8328
  • "Vive la rÚsistance!"
    • View Profile
What is the exposed core of an extinct volcano called?
« Reply #2 on: 15/12/2010 00:40:36 »
Edinburgh Castle sits on top of one. I seem to remember it was sometimes called a volcanic plug, or is that something different?
There ain'ta no sanity clause, and there ain'ta no centrifugal force Šther.

*

Offline Bass

  • Neilep Level Member
  • ******
  • 1340
    • View Profile
What is the exposed core of an extinct volcano called?
« Reply #3 on: 15/12/2010 02:49:09 »
volcanic plug, volcanic neck, volcanic pipe, volcanic feeder...
Old enough to have a grandson
Slow enough to study rocks
Thirsty enough to find a pub

*

Offline Geezer

  • Neilep Level Member
  • ******
  • 8328
  • "Vive la rÚsistance!"
    • View Profile
What is the exposed core of an extinct volcano called?
« Reply #4 on: 15/12/2010 03:12:53 »
volcanic plug, volcanic neck, volcanic pipe, volcanic feeder...

No wonder y'all geopoliticians is so cerfused 'bout stuff. Lands Sakes! You might settle on one name 'stead o' three.

Sounds ter me like a load o' that ol' techinerbabble they was talkin' 'bout on the Discovery Channel other nite.
There ain'ta no sanity clause, and there ain'ta no centrifugal force Šther.

*

Offline Bass

  • Neilep Level Member
  • ******
  • 1340
    • View Profile
What is the exposed core of an extinct volcano called?
« Reply #5 on: 15/12/2010 20:28:27 »
Keeps the riffraff out of the profession (or in, I forget which way that works)...
Old enough to have a grandson
Slow enough to study rocks
Thirsty enough to find a pub