How do volcanoes produce carbon dioxide?

  • Thread starter Hunter1234
  • Start date
  • #1
11
0
I am just curious where this gas comes from when volcanoes erupt.
 

Answers and Replies

  • #2
SteamKing
Staff Emeritus
Science Advisor
Homework Helper
12,796
1,668
I am just curious where this gas comes from when volcanoes erupt.
It comes from the geological carbon cycle:

https://en.wikipedia.org/wiki/Carbon_cycle

Much carbon is stored in the form of carbonate rocks, like limestone. When these rocks are subducted by tectonic activity into the mantle and metamorphized, the carbon they contain is released in the form of CO2, which can re-enter the atmosphere later through volcanic eruptions.
 
  • Like
Likes DrDu
  • #3
DrDu
Science Advisor
6,099
805
The lava in volcanoes is generated when e.g. crust material is molten during subduction of crust. This crust may contain CaCO3 etc and other carbonates. Unter high temperature, it will react with silica, alumina etc to form feldspar and carbon dioxide. Simplified: CaCO3 +SiO2 -> CaSiO3 + CO2.
 

Related Threads on How do volcanoes produce carbon dioxide?

  • Last Post
Replies
3
Views
5K
  • Last Post
Replies
5
Views
13K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
6
Views
4K
Replies
5
Views
4K
Replies
5
Views
4K
Replies
28
Views
25K
Replies
4
Views
10K
Replies
6
Views
6K
Replies
17
Views
8K
Top