小油坑 (Sulphur Geysers)

Visit to Beitou Hot Spring
Q1. How are sulphur geysers formed?
Image result for how do hot springs form
Sulphur springs form the same way as any other hot spring, water is absorbed by the ground as rain and is heated by hot magma formed by the uneven heating of mantle material by the Earth's core. Only one thing differentiates a sulphur hot spring from a regular hot spring, the presence of sulphur under ground, in the vicinity, or on the surface where the springs surface. This causes the sulphur molecules to be trapped by the hot water, bringing the rotten eggs smell all over as the steam from the hot spring spread.
Q2. Where do they come from?
The heat to form sulphur geysers comes from a buried magma (molten rock) chamber which is only a few kilometres below the surface. The magma is the source of most of the volcanic rocks.










Q3. How often do these hot springs occur?
Hot springs are generally springs of hot groundwater that rises from the ground. These springs mainly occur in many thermal areas in the world such as the one that was visited during the trip and Mammoth Hot Springs in Wyoming. The water is naturally heated due to the heat produced by Earth’s Mantle as illustrated in the following diagram.
Q4. What does the sulfur geysers emits when it is boiling?
Sulfur geysers emit solid sulfur. However, when it is boiling, most of the emitted sulfur becomes a gas and fuses with the oxygen in the air causing it to form sulfur dioxide. In high concentrations, it is a poisonous gas but in trace amounts it smells like rotten egg.

Chemical equation: S (s) + O2 (g) → SO2 (g)

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