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The belt of ancient rocks of 2,000 million years from the Brazil coast matches those from western Africa. Also, the earliest marine deposits along the coastline of South America and Africa are of the Jurassic age. What are we talking about?
- a)Seafloor Spreading
- b)Environmental Possibilism
- c)Continental Drift Theory
- d)Convectional Current Theory
Correct answer is option 'C'. Can you explain this answer?
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The belt of ancient rocks of 2,000 million years from the Brazil coas...
- As argued by Wegner, all the continents were once formed as a single continental mass (supercontinent, called PANGAEA [meaning all Earth]), and this mass was surrounded by a mega ocean, known as PANTHALASSA (meaning all water).
- He further argued that Pangaea, the supercontinent, began to split around 200 million years ago. Subsequently, their components broke up into various smaller continents that exist today.
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The belt of ancient rocks of 2,000 million years from the Brazil coas...
Continental Drift Theory
The correct answer is option C, Continental Drift Theory. This theory, proposed by Alfred Wegener in the early 20th century, suggests that the continents were once joined together in a single supercontinent called Pangaea and have since drifted apart.
Key Points:
1. Belt of Ancient Rocks:
The belt of ancient rocks from the Brazil coast that matches those from western Africa is evidence of the existence of a supercontinent. The similarities in the rock formations indicate that these regions were once connected.
2. Matching Ancient Rocks:
The age and composition of the rocks found along the Brazil coast and western Africa are similar, suggesting a common geological history. This similarity supports the idea that these two continents were once part of the same landmass.
3. Earliest Marine Deposits:
The presence of Jurassic age marine deposits along the coastlines of South America and Africa further supports the Continental Drift Theory. The discovery of similar fossils and sedimentary layers in both regions indicates that they were once adjacent and shared the same marine environment.
4. Pangaea:
According to the Continental Drift Theory, approximately 200 million years ago, all the continents were connected as one supercontinent called Pangaea. Over time, Pangaea began to break apart, and the continents we know today gradually drifted to their current positions.
5. Plate Tectonics:
The movement of the continents is explained by the theory of plate tectonics, which states that the Earth's lithosphere is divided into several large plates that float on the semi-fluid asthenosphere below. These plates move and interact with each other, causing various geological phenomena such as earthquakes, volcanic activity, and the drifting of continents.
Conclusion:
The presence of matching ancient rocks and Jurassic age marine deposits between the Brazil coast and western Africa provides strong evidence for the Continental Drift Theory. This theory explains how the continents have moved over millions of years and helps us understand the geological history and formation of the Earth's landmasses.
The correct answer is option C, Continental Drift Theory. This theory, proposed by Alfred Wegener in the early 20th century, suggests that the continents were once joined together in a single supercontinent called Pangaea and have since drifted apart.
Key Points:
1. Belt of Ancient Rocks:
The belt of ancient rocks from the Brazil coast that matches those from western Africa is evidence of the existence of a supercontinent. The similarities in the rock formations indicate that these regions were once connected.
2. Matching Ancient Rocks:
The age and composition of the rocks found along the Brazil coast and western Africa are similar, suggesting a common geological history. This similarity supports the idea that these two continents were once part of the same landmass.
3. Earliest Marine Deposits:
The presence of Jurassic age marine deposits along the coastlines of South America and Africa further supports the Continental Drift Theory. The discovery of similar fossils and sedimentary layers in both regions indicates that they were once adjacent and shared the same marine environment.
4. Pangaea:
According to the Continental Drift Theory, approximately 200 million years ago, all the continents were connected as one supercontinent called Pangaea. Over time, Pangaea began to break apart, and the continents we know today gradually drifted to their current positions.
5. Plate Tectonics:
The movement of the continents is explained by the theory of plate tectonics, which states that the Earth's lithosphere is divided into several large plates that float on the semi-fluid asthenosphere below. These plates move and interact with each other, causing various geological phenomena such as earthquakes, volcanic activity, and the drifting of continents.
Conclusion:
The presence of matching ancient rocks and Jurassic age marine deposits between the Brazil coast and western Africa provides strong evidence for the Continental Drift Theory. This theory explains how the continents have moved over millions of years and helps us understand the geological history and formation of the Earth's landmasses.
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The belt of ancient rocks of 2,000 million years from the Brazil coast matches those from western Africa. Also, the earliest marine deposits along the coastline of South America and Africa are of the Jurassic age. What are we talking about?a) Seafloor Spreadingb) Environmental Possibilismc) Continental Drift Theoryd) Convectional Current TheoryCorrect answer is option 'C'. Can you explain this answer?
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The belt of ancient rocks of 2,000 million years from the Brazil coast matches those from western Africa. Also, the earliest marine deposits along the coastline of South America and Africa are of the Jurassic age. What are we talking about?a) Seafloor Spreadingb) Environmental Possibilismc) Continental Drift Theoryd) Convectional Current TheoryCorrect answer is option 'C'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about The belt of ancient rocks of 2,000 million years from the Brazil coast matches those from western Africa. Also, the earliest marine deposits along the coastline of South America and Africa are of the Jurassic age. What are we talking about?a) Seafloor Spreadingb) Environmental Possibilismc) Continental Drift Theoryd) Convectional Current TheoryCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The belt of ancient rocks of 2,000 million years from the Brazil coast matches those from western Africa. Also, the earliest marine deposits along the coastline of South America and Africa are of the Jurassic age. What are we talking about?a) Seafloor Spreadingb) Environmental Possibilismc) Continental Drift Theoryd) Convectional Current TheoryCorrect answer is option 'C'. Can you explain this answer?.
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