OCEAN DOMAIN 



EFFECT* SUPPLY -REMOVAL 

 C,T, MASS FLOW RATE 



CRUSTAL I 



MINERAL 



DOMAIN 



P.T.C 



DOMAIN 



Permeability 



Thermal Gradient 

 Geologic Events 



i 



MAGMA DOMAIN 

 P.T.C 



Figure 2. Simple sketch of the components of 

 hydrothermal circulation system. The sy 

 down-welling of cold, dense, alkaline, m 

 through permeable, fractured oceanic cru 

 flow near magmatic heat sources; 3) upwe 

 thermally expanded, lighter seawater; 4) 

 heated seawater with minerals under prev 

 temperature (T), and composition (C) fie 

 metal-rich hydrothermal solutions; 5) pr 

 metallic minerals beneath and on the sea 

 discharge of hot springs into the ocean; 

 hot springs on the ocean environment is 

 composition (C), temperature (T), and ma 



a subseafloor 

 stem involves: 1) 

 etal-poor seawater 

 st; 2) heating by 

 lling of hot, 



reaction of the 

 ailing pressure (P), 

 Ids to evolve acid, 

 ecipitation of 

 floor; and 6) 



the effect of the 

 related to their 

 ss flow rate. 



