Virtual Geology Museum   
Weller's spaghetti theory of magma

Magma has three major components: silica, cations, and dissolved gases.
Each of these substances affects the viscosity of magma.
  

 
silica:                                                                                                                                

 
cations:

dissolved gases:

Click here to return to index of Opal's Pals   

copyright 2007, 
Roger Weller     wellerr@cochise.edu