Describe the fundamental reasons behind the phenomena of sinking islands in the coastal areas of India. Consider its potential effects on island communities in particular as well as the country at large. (Answer in 250 words)
Northward movement of the Indian subcontinent towards the Eurasian plate eventually caused a massive collision and the creation of the Himalayan range. This cataclysmic event was orchestrated by the following geodynamic processes:This cataclysmic event was orchestrated by the following geodynamic prRead more
Northward movement of the Indian subcontinent towards the Eurasian plate eventually caused a massive collision and the creation of the Himalayan range. This cataclysmic event was orchestrated by the following geodynamic processes:This cataclysmic event was orchestrated by the following geodynamic processes:
1. Continental convergence: The shear movement observed in the Indian plate toward the Eurasian plate meant there was going to be a compression zone.
2. Crustal thickening: When the plates came into contact, the crust rises and becomes thicker creating an extensive orogenic belt.
3. Faulting and folding: To worsen the effects of the forces that caused uplift, there was faults which led to folds that shaped the Himalayan range.
4. Uplift and metamorphism: This underthrusting made the rocks in the region to uplift and metamorphose quickly due to movements on the Indian plate which subducts beneath the Eurasian plate.
5. Denudation and erosion: Weathering and erosion contributed to the rock break down thus revealing the towering giants of the himalayas.
This titanic story has been playing out on a scale of tens of millions of year constructing one of the most grandiose mountain chains possible on this planet. Himalayas is one of the best examples of the geodynamic forces that are still active and creating miracles on this earth.
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India has a fragile network of over 1,382 islands. However, several of these islands are under natural and anthropogenic threat. In fact, one such island, the bio-diverse and uninhabited Parali I in the Lakshadweep archipelago, has entirely disappeared from the map. Reasons behind the phenomenon ofRead more
India has a fragile network of over 1,382 islands. However, several of these islands are under natural and anthropogenic threat. In fact, one such island, the bio-diverse and uninhabited Parali I in the Lakshadweep archipelago, has entirely disappeared from the map.
Reasons behind the phenomenon of sinking/shrinking islands in India’s coastal regions:
Implications for the nation:
Implications for island communities:
In this context, measures such as large scale mangroves plantation, adopting green technologies, early warning systems, etc. can go a long way in replicating the story of hope from Tamil Nadu: the Vaan island in the Gulf of Mannar, which was brought back to life.
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