Source: IE
Context: Indian oceanographers have achieved a milestone by capturing an image of an active hydrothermal vent located 4,500 meters below the Indian Ocean.
About Hydrothermal Vents:
- What they are: Hydrothermal vents are underwater springs formed in tectonically active regions where seawater interacts with magma beneath the ocean floor.
- Location:
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- Found near tectonic plate boundaries, ridges, and volcanic arcs.
E.g. Central and Southwest Indian Ridges.
- Geographical formation:
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- Cold Seawater Penetration: Water seeps through cracks in the ocean crust near tectonic plate boundaries.
- Heating by Magma: Water gets superheated (up to 370°C) as it comes into contact with magma.
- Emergence as Plumes: Hot water emerges through vents, forming mineral-rich plumes and structures like chimneys.
- Significance:
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- Mineral Deposits: Rich in economically beneficial minerals like copper, zinc, cobalt, nickel, gold, and silver.
- Ecosystem Insights: Hosts unique chemosynthetic organisms, providing insights into life in extreme environments.
- Economic Potential: Long activity spans (hundreds to thousands of years) make them valuable for sustained exploration.
- Scientific Research: Offers understanding of deep-sea geological processes and resource potential for strategic missions like India’s Deep Ocean Mission.
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