How Are Travertine or Silica Deposits Formed from Boiling Geysers

question 69

Multiple Choice

How are travertine or silica deposits formed from boiling geysers and related hydrothermal systems?

• A) As pressures increase less mineral matter is soluble.
• B) By introduction of cold fresh recharge water which quenches the system.
• C) Boiling off steam forces the remaining hot solution to be saturated or supersaturated as the same mineral content is now concentrated in less water and it precipitates.
• D) More gases enter the system once boiling starts forcing precipitation.

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