Question Q.14Discuss the major features of the ocean floor and their significanceGS1GS1
The configuration of the ocean floor provides essential information about the geological processes that have shaped the Earth's surface. Discuss the major features of the ocean floor and their significance in the study of oceanography. (Answer in 250 words) 15 Marks
Introduction
Ocean floor are vast plains, submerged mountains covering ~71.1% of earth's surface
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Main Body
Major Features & Significance:
(A) Mid Oceanic Ridge
1Chain of mountains under ocean
(Continental shelf, Continental slope, Sea mound, Abyssal plains, Submarine Canyon, Trench, Mid-oceanic ridge)
2Symmetric mid-ridge
3Spread & magnetic Field on ridges at ridge gives sea floor spreading
[Fig 2: Sea floor Spread] New magma in Trench. Which is much younger ~200 Mn vs 3200 Mn for land crust.
(B) Trenches
1Deep trenches varying from 3-5 km
2Provides information about earth's interior magma, mantle composition etc.
3Source of hydrothermal minerals & geothermal energy
4Source of underwater volcanoes
(C) Abyssal Plains
1Flat plain lands of the ocean
2Source of rich organic material - understand marine organisms
(D) Continental Shelf:
1Shelves of continents i.e. continents end with slope
2Provides information about plate movements, marine deposits from rivers, etc.
(C) Abyssal Plains
1Flat plain lands of the ocean
2Source of rich organic material - understand marine organisms
(D) Continental Shelf:
1Shelves of continents i.e. continents end with slope
2Provides information about plate movements, marine deposits from rivers, etc.
— Aniket Danjanshwoor Hinde · AIR 81
182 words5 paragraphs
Conclusion
India has rightly undertaken bathymetric study & Deep Sea Mission to understand ocean characteristics & predict disasters in advance.
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Diagram
Fig 1: Oceanic Floor features - showing continental shelf, continental slope, seamound, abyssal plains, submarine canyon, trench, and mid-oceanic ridge
- Diagram included showing major ocean floor features
- Identifies key structural components of ocean floor
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Topper
Aniket Danjanshwoor Hinde
AIR 812023
Subject & Paper
GS1GS1
Topic
World Physical Geography
Phenomena
Ocean Floor Features
Writing Stats
213
Total words
5
Paragraphs