Structure and Physiography
CBSE · Class 11 · Geography
Summary of Structure and Physiography for CBSE Class 11 Geography. Key concepts, important points, and chapter overview.
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Overview
Earth has evolved over about 4600 million years, and its present landforms are the result of long-term action by endogenic and exogenic forces. India’s physical features reflect this history through three geological divisions: the Peninsular Block, the Himalayas and other Peninsular Mountains, and t
Key Concepts
Earth is approximately 4600 million years
Earth is approximately 4600 million years old. The Indian plate was once south of the equator and much larger, with the Australian plate as part of it
India is divided into the Peninsular
India is divided into the Peninsular Block, the Himalayas and other Peninsular Mountains, and the Indo-Ganga-Brahmaputra Plain. These divisions reflec
The Peninsular Block is an ancient
The Peninsular Block is an ancient, rigid landmass made mainly of very old gneisses and granites. It has stood as a stable block since the Cambrian pe
These mountains are young
These mountains are young, weak, and flexible in structure. They are tectonic in origin and are still being shaped by exogenic and endogenic forces, w
This plain began as a geo
This plain began as a geo-synclinal depression and reached maximum development about 64 million years ago during the third phase of Himalayan mountain
Learning Objectives
- Understand Earth’s long geological history and the role of endogenic and exogenic forces
- Identify the three geological divisions of India and their major characteristics
- Explain the rigid nature of the Peninsular Block and its major landforms
- Describe the young and dynamic nature of the Himalayas and other mountains
- Understand the formation and features of the Indo-Ganga-Brahmaputra Plain
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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