Explain the origin of Indian islands in the Bay of Bengal and the Arabian Sea.
Introduction
28 words
Main Body
Origin of Indian Islands
(i) Bay of Bengal
-> Andaman and Nicobar islands are found off the coast of Eastern India.
-> These islands are volcanic in origin, formed due to tectonic movement of plates.
-> As the Indian plate collided
with Eurasian plate, syntaxial bend developed near Namcha Barwa, led to N-S orientation of Purvanchals.
-> Andaman & Nicobar are considered to be the extension of himalayan orogenisis, geologically matching the Arakan mountains of Myanmar.
-> Barren Island -> only live volcano of India, part of under sea volcanic mountain chain, the upraised part of which forms the Andaman & Nicobar islands.
[diagram: N.E. India -> Arakan mts (Myanmar), showing BOB and A&N]
(ii) Arabian sea Islands
-> Lakshadweep islands, located
480 km off the Malabar coast, comprises of 43 islands, only 11 are inhabited.
[diagram: Hill -> reef -> lagoon; and Atoll with lagoon]
— Ritika Chitlangia
Conclusion
18 words
Diagram
Map of India showing location of islands, with Arabian Sea marked with Lakshadweep and Bay of Bengal marked with Andaman & Nicobar
- Good diagram of India with island locations
- Clear structure by region
Ritika Chitlangia
Geography
Physical Geography - Islands
Origin of Indian islands - Bay of Bengal
247
Total words
2
Paragraphs
structured, point-wise
Tone