G
EOG
RAP
HY ValueAdded Materi
al
Mai
ns2025
KeyFeat
ures:
Syll
abus&PYQ-Based
Str
ucturing:
Targetedsyl
labus
coveragewithPYQ
i
nsights.
Int
egratedApproach:
Seamlessint
egrati
on
ofkeyconcepts.
Stati
c+Current
Affai
rs:
Combi ni
ngcore
conceptswi
thcurr
ent
updates.
VisualLearningTool
s:
Exam-focusedmaps
anddiagr amsf or
quickrecall
.
, Student Notes:
GEOGRAPHY
Contents
Preface ........................................................................................................................................... 4
1. GEOMORPHOLOGY .................................................................................................................... 6
1.1. Origin and Evolution of Earth .............................................................................................. 6
1.1.1. The Big Bang Theory .................................................................................................... 7
1.1.2. Missions to Understand the Origin and Evolution of Earth ......................................... 8
1.2. Internal Structure of the Earth ............................................................................................ 9
1.2.1. Sources of Information about Earth’s Interior ............................................................. 9
1.2.2. Seismic Waves ............................................................................................................ 10
1.3. Forces Acting on Earth ...................................................................................................... 13
1.3.1. Endogenic Forces ....................................................................................................... 13
1.3.2. Exogenic Forces .......................................................................................................... 23
1.4. Key geophysical phenomenon .......................................................................................... 32
1.4.1. Earthquakes................................................................................................................ 32
1.4.2. Volcanoes ................................................................................................................... 35
1.4.3. Tsunamis..................................................................................................................... 39
1.4.4. Landslides ................................................................................................................... 40
1.5. Rocks and rock cycle.......................................................................................................... 43
1.5.1 Rock Cycle.................................................................................................................... 44
1.6. Soils ................................................................................................................................... 44
1.6.1. Soil forming factors .................................................................................................... 44
1.6.2. Soil Degradation and Conservation ............................................................................ 45
1.6.3. Soil Conservation Strategies ....................................................................................... 46
2. CLIMATOLOGY .......................................................................................................................... 47
2.1. Earth’s Atmosphere ........................................................................................................... 48
2.1.1. Structure Of Atmosphere ........................................................................................... 48
2.2. Temperature Distribution On Earth................................................................................... 50
2.2.1. Heat Budget ............................................................................................................... 50
2.2.2. Temperature Inversion ............................................................................................... 53
2.3. Pressure Belts .................................................................................................................... 56
2.3.1. Thermally induced pressure belts .............................................................................. 56
2.3.2. Dynamically Induced Pressure Belts .......................................................................... 57
2.4. Atmospheric Circulation .................................................................................................... 59
2.4.1. Planetary Winds ......................................................................................................... 59
2.4.2. Seasonal Winds .......................................................................................................... 61
2.4.3. Local Winds ................................................................................................................ 63
2.4.4. Atmospheric Tricellular Circulation ............................................................................ 64
2.4.5. Jet Streams ................................................................................................................. 64
2.5. Precipitation ...................................................................................................................... 69
2.6. Air Mass............................................................................................................................. 71
2.6.1. Fronts ......................................................................................................................... 73
2.7. Cyclones ............................................................................................................................ 74
2.7.1. Tropical Cyclones vs Temperate Cyclones .................................................................. 75
2.7.2. Anticyclones ............................................................................................................... 80
2.8. Indian Monsoons .............................................................................................................. 81
2.8.1. ENSO (El Niño–Southern Oscillation) ......................................................................... 83
2.8.2. Indian Ocean Dipole (IOD) and Its Impact.................................................................. 84
3. OCEANOGRAPHY ...................................................................................................................... 88
3.1. Ocean Relief Features ....................................................................................................... 88
3.1.1. Ocean Floor Mapping ................................................................................................. 91
AHMEDABAD | BENGALURU | BHOPAL | CHANDIGARH | DELHI | GUWAHATI | HYDERABAD | JAIPUR | JODHPUR | LUCKNOW | PRAYAGRAJ | PUNE | RANCHI
1 www.visionias.in # 8468022022 ©Vision IAS
, 3.2. Properties of Ocean Water................................................................................................ 92 Student Notes:
3.2.1. Temperature ............................................................................................................... 92
3.2.2 Salinity ......................................................................................................................... 94
3.2.3. Density ....................................................................................................................... 96
3.3. Movement of ocean water................................................................................................ 98
3.3.1. Types of ocean currents ............................................................................................. 99
3.3.2. Deep Ocean Water Circulation ................................................................................. 103
3.4. Sea level changes ............................................................................................................ 105
3.5. Ocean Deposits ............................................................................................................... 106
3.6. Marine Resources............................................................................................................ 107
3.6.1. Distribution of Coral Reefs ....................................................................................... 110
3.6.2. Major Threats to Coral Reefs.................................................................................... 110
3.7. Marine Pollution ............................................................................................................. 111
3.8. Some Additional Topics ................................................................................................... 114
4. PHYSIOGRAPHY OF INDIA....................................................................................................... 117
4.1. The Himalayas ................................................................................................................. 117
4.2. Northern Plains of India .................................................................................................. 120
4.3. Thar Desert...................................................................................................................... 124
4.4. The Peninsular Plateau.................................................................................................... 125
4.4.1. The Western and Eastern Ghats ............................................................................... 126
4.5. Coastal Plains of India ..................................................................................................... 127
4.6. Drainage system of India ................................................................................................. 130
4.6.1. Inland water based transport in India ...................................................................... 132
4.6.2. Interlinkage of Rivers................................................................................................ 134
4.7. Islands of India ................................................................................................................ 136
4.7.1. Andaman and Nicobar group of islands vs Lakshadweep islands ............................ 137
4.8. Natural Vegetation of India ............................................................................................. 137
4.8.1. Types of Vegetation in India ..................................................................................... 138
4.8.2. Mangroves................................................................................................................ 140
4.9. Soils of India .................................................................................................................... 142
4.9.1. Types of soils ............................................................................................................ 142
5. DISTRIBUTION OF KEY NATURAL RESOURCES ........................................................................ 145
5.1. Mineral ............................................................................................................................ 145
5.1.1. Mineral distribution across the world ...................................................................... 146
5.1.2. Mineral Resources in India (Mineral Rich Regions) .................................................. 147
5.1.3. Critical minerals ....................................................................................................... 148
5.2. Water Resources ............................................................................................................. 151
5.2.1. Groundwater and its management in India ............................................................. 152
5.3. Land Resources ............................................................................................................... 153
5.3.1. Land degradation ..................................................................................................... 153
5.4. Energy Resources ............................................................................................................ 155
5.4.1. Coal .............................................................................................................................. 156
5.4.2. Petroleum or Mineral Oil ......................................................................................... 158
5.4.3. Natural Gas............................................................................................................... 159
5.4.4. Solar Energy ............................................................................................................. 161
5.4.5. Wind Energy ............................................................................................................. 163
5.4.6. Nuclear energy ......................................................................................................... 164
5.4.7. Bio-energy in India ................................................................................................... 166
5.4.8. Geothermal energy .................................................................................................. 167
5.4.9. Alternate sources of energy ..................................................................................... 167
5.5. Mining & Exploration ...................................................................................................... 169
5.5.1. Deep sea mining ....................................................................................................... 169
6. INDUSTRIES ............................................................................................................................ 172
AHMEDABAD | BENGALURU | BHOPAL | CHANDIGARH | DELHI | GUWAHATI | HYDERABAD | JAIPUR | JODHPUR | LUCKNOW | PRAYAGRAJ | PUNE | RANCHI
2 www.visionias.in # 8468022022 ©Vision IAS
, 6.1 Industries.......................................................................................................................... 172 Student Notes:
6.1.1. Classification of Industries ....................................................................................... 173
6.2. Location of Industries...................................................................................................... 174
6.2.1. Geographical Factors: ............................................................................................... 174
6.2.2. Non – Geographical Factors: .................................................................................... 175
6.2.3. World Industrial Regions .......................................................................................... 175
6.3. Industrial Regions of India............................................................................................... 175
6.3.1. Industrial Corridors .................................................................................................. 178
6.3.2. Emerging Industrial Clusters in Tier-2 and Tier-3 Cities in India .............................. 181
6.4. Mineral-based Industry ................................................................................................... 181
6.4.1. Iron and Steel Industry ............................................................................................. 181
6.5. Service/Technology Industries ........................................................................................ 184
6.5.1. IT Industry ................................................................................................................ 184
6.5.2. Semiconductor Industries ........................................................................................ 185
6.6. Agro-based Industries ..................................................................................................... 187
6.6.1. Sugar Industry .......................................................................................................... 187
6.6.2. Cotton Industry ........................................................................................................ 190
6.6.3. Jute Industry............................................................................................................. 191
6.6.4. Tea Industry .............................................................................................................. 193
6.6.5. Coffee Industry ......................................................................................................... 194
6.6.6. Rubber Industry ....................................................................................................... 195
6.7. Other Industries .............................................................................................................. 197
6.7.1. Pharmaceutical Industry .......................................................................................... 197
6.7.2. Automobile Industry ................................................................................................ 199
6.7.3. Shipbuilding Industry ............................................................................................... 202
6.7.4. Space Industry .......................................................................................................... 202
6.8. Evolving Global Supply Chains: A Geographical Perspective........................................... 204
6.8.1. Geographical Impacts of Supply Chain Disruptions ................................................. 205
6.8.2. Emerging Geographical Patterns in Supply Chain Strategies ................................... 205
6.8.3. From Just-in-Time to Just-in-Case: Spatial Implications ........................................... 205
6.8.4. Decoupling and De-risking: Reshaping Economic Geography .................................. 206
Copyright © by Vision IAS
All rights are reserved. No part of this document may be reproduced, stored in a retrieval system or
transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise,
without prior permission of Vision IAS.
AHMEDABAD | BENGALURU | BHOPAL | CHANDIGARH | DELHI | GUWAHATI | HYDERABAD | JAIPUR | JODHPUR | LUCKNOW | PRAYAGRAJ | PUNE | RANCHI
3 www.visionias.in # 8468022022 ©Vision IAS
EOG
RAP
HY ValueAdded Materi
al
Mai
ns2025
KeyFeat
ures:
Syll
abus&PYQ-Based
Str
ucturing:
Targetedsyl
labus
coveragewithPYQ
i
nsights.
Int
egratedApproach:
Seamlessint
egrati
on
ofkeyconcepts.
Stati
c+Current
Affai
rs:
Combi ni
ngcore
conceptswi
thcurr
ent
updates.
VisualLearningTool
s:
Exam-focusedmaps
anddiagr amsf or
quickrecall
.
, Student Notes:
GEOGRAPHY
Contents
Preface ........................................................................................................................................... 4
1. GEOMORPHOLOGY .................................................................................................................... 6
1.1. Origin and Evolution of Earth .............................................................................................. 6
1.1.1. The Big Bang Theory .................................................................................................... 7
1.1.2. Missions to Understand the Origin and Evolution of Earth ......................................... 8
1.2. Internal Structure of the Earth ............................................................................................ 9
1.2.1. Sources of Information about Earth’s Interior ............................................................. 9
1.2.2. Seismic Waves ............................................................................................................ 10
1.3. Forces Acting on Earth ...................................................................................................... 13
1.3.1. Endogenic Forces ....................................................................................................... 13
1.3.2. Exogenic Forces .......................................................................................................... 23
1.4. Key geophysical phenomenon .......................................................................................... 32
1.4.1. Earthquakes................................................................................................................ 32
1.4.2. Volcanoes ................................................................................................................... 35
1.4.3. Tsunamis..................................................................................................................... 39
1.4.4. Landslides ................................................................................................................... 40
1.5. Rocks and rock cycle.......................................................................................................... 43
1.5.1 Rock Cycle.................................................................................................................... 44
1.6. Soils ................................................................................................................................... 44
1.6.1. Soil forming factors .................................................................................................... 44
1.6.2. Soil Degradation and Conservation ............................................................................ 45
1.6.3. Soil Conservation Strategies ....................................................................................... 46
2. CLIMATOLOGY .......................................................................................................................... 47
2.1. Earth’s Atmosphere ........................................................................................................... 48
2.1.1. Structure Of Atmosphere ........................................................................................... 48
2.2. Temperature Distribution On Earth................................................................................... 50
2.2.1. Heat Budget ............................................................................................................... 50
2.2.2. Temperature Inversion ............................................................................................... 53
2.3. Pressure Belts .................................................................................................................... 56
2.3.1. Thermally induced pressure belts .............................................................................. 56
2.3.2. Dynamically Induced Pressure Belts .......................................................................... 57
2.4. Atmospheric Circulation .................................................................................................... 59
2.4.1. Planetary Winds ......................................................................................................... 59
2.4.2. Seasonal Winds .......................................................................................................... 61
2.4.3. Local Winds ................................................................................................................ 63
2.4.4. Atmospheric Tricellular Circulation ............................................................................ 64
2.4.5. Jet Streams ................................................................................................................. 64
2.5. Precipitation ...................................................................................................................... 69
2.6. Air Mass............................................................................................................................. 71
2.6.1. Fronts ......................................................................................................................... 73
2.7. Cyclones ............................................................................................................................ 74
2.7.1. Tropical Cyclones vs Temperate Cyclones .................................................................. 75
2.7.2. Anticyclones ............................................................................................................... 80
2.8. Indian Monsoons .............................................................................................................. 81
2.8.1. ENSO (El Niño–Southern Oscillation) ......................................................................... 83
2.8.2. Indian Ocean Dipole (IOD) and Its Impact.................................................................. 84
3. OCEANOGRAPHY ...................................................................................................................... 88
3.1. Ocean Relief Features ....................................................................................................... 88
3.1.1. Ocean Floor Mapping ................................................................................................. 91
AHMEDABAD | BENGALURU | BHOPAL | CHANDIGARH | DELHI | GUWAHATI | HYDERABAD | JAIPUR | JODHPUR | LUCKNOW | PRAYAGRAJ | PUNE | RANCHI
1 www.visionias.in # 8468022022 ©Vision IAS
, 3.2. Properties of Ocean Water................................................................................................ 92 Student Notes:
3.2.1. Temperature ............................................................................................................... 92
3.2.2 Salinity ......................................................................................................................... 94
3.2.3. Density ....................................................................................................................... 96
3.3. Movement of ocean water................................................................................................ 98
3.3.1. Types of ocean currents ............................................................................................. 99
3.3.2. Deep Ocean Water Circulation ................................................................................. 103
3.4. Sea level changes ............................................................................................................ 105
3.5. Ocean Deposits ............................................................................................................... 106
3.6. Marine Resources............................................................................................................ 107
3.6.1. Distribution of Coral Reefs ....................................................................................... 110
3.6.2. Major Threats to Coral Reefs.................................................................................... 110
3.7. Marine Pollution ............................................................................................................. 111
3.8. Some Additional Topics ................................................................................................... 114
4. PHYSIOGRAPHY OF INDIA....................................................................................................... 117
4.1. The Himalayas ................................................................................................................. 117
4.2. Northern Plains of India .................................................................................................. 120
4.3. Thar Desert...................................................................................................................... 124
4.4. The Peninsular Plateau.................................................................................................... 125
4.4.1. The Western and Eastern Ghats ............................................................................... 126
4.5. Coastal Plains of India ..................................................................................................... 127
4.6. Drainage system of India ................................................................................................. 130
4.6.1. Inland water based transport in India ...................................................................... 132
4.6.2. Interlinkage of Rivers................................................................................................ 134
4.7. Islands of India ................................................................................................................ 136
4.7.1. Andaman and Nicobar group of islands vs Lakshadweep islands ............................ 137
4.8. Natural Vegetation of India ............................................................................................. 137
4.8.1. Types of Vegetation in India ..................................................................................... 138
4.8.2. Mangroves................................................................................................................ 140
4.9. Soils of India .................................................................................................................... 142
4.9.1. Types of soils ............................................................................................................ 142
5. DISTRIBUTION OF KEY NATURAL RESOURCES ........................................................................ 145
5.1. Mineral ............................................................................................................................ 145
5.1.1. Mineral distribution across the world ...................................................................... 146
5.1.2. Mineral Resources in India (Mineral Rich Regions) .................................................. 147
5.1.3. Critical minerals ....................................................................................................... 148
5.2. Water Resources ............................................................................................................. 151
5.2.1. Groundwater and its management in India ............................................................. 152
5.3. Land Resources ............................................................................................................... 153
5.3.1. Land degradation ..................................................................................................... 153
5.4. Energy Resources ............................................................................................................ 155
5.4.1. Coal .............................................................................................................................. 156
5.4.2. Petroleum or Mineral Oil ......................................................................................... 158
5.4.3. Natural Gas............................................................................................................... 159
5.4.4. Solar Energy ............................................................................................................. 161
5.4.5. Wind Energy ............................................................................................................. 163
5.4.6. Nuclear energy ......................................................................................................... 164
5.4.7. Bio-energy in India ................................................................................................... 166
5.4.8. Geothermal energy .................................................................................................. 167
5.4.9. Alternate sources of energy ..................................................................................... 167
5.5. Mining & Exploration ...................................................................................................... 169
5.5.1. Deep sea mining ....................................................................................................... 169
6. INDUSTRIES ............................................................................................................................ 172
AHMEDABAD | BENGALURU | BHOPAL | CHANDIGARH | DELHI | GUWAHATI | HYDERABAD | JAIPUR | JODHPUR | LUCKNOW | PRAYAGRAJ | PUNE | RANCHI
2 www.visionias.in # 8468022022 ©Vision IAS
, 6.1 Industries.......................................................................................................................... 172 Student Notes:
6.1.1. Classification of Industries ....................................................................................... 173
6.2. Location of Industries...................................................................................................... 174
6.2.1. Geographical Factors: ............................................................................................... 174
6.2.2. Non – Geographical Factors: .................................................................................... 175
6.2.3. World Industrial Regions .......................................................................................... 175
6.3. Industrial Regions of India............................................................................................... 175
6.3.1. Industrial Corridors .................................................................................................. 178
6.3.2. Emerging Industrial Clusters in Tier-2 and Tier-3 Cities in India .............................. 181
6.4. Mineral-based Industry ................................................................................................... 181
6.4.1. Iron and Steel Industry ............................................................................................. 181
6.5. Service/Technology Industries ........................................................................................ 184
6.5.1. IT Industry ................................................................................................................ 184
6.5.2. Semiconductor Industries ........................................................................................ 185
6.6. Agro-based Industries ..................................................................................................... 187
6.6.1. Sugar Industry .......................................................................................................... 187
6.6.2. Cotton Industry ........................................................................................................ 190
6.6.3. Jute Industry............................................................................................................. 191
6.6.4. Tea Industry .............................................................................................................. 193
6.6.5. Coffee Industry ......................................................................................................... 194
6.6.6. Rubber Industry ....................................................................................................... 195
6.7. Other Industries .............................................................................................................. 197
6.7.1. Pharmaceutical Industry .......................................................................................... 197
6.7.2. Automobile Industry ................................................................................................ 199
6.7.3. Shipbuilding Industry ............................................................................................... 202
6.7.4. Space Industry .......................................................................................................... 202
6.8. Evolving Global Supply Chains: A Geographical Perspective........................................... 204
6.8.1. Geographical Impacts of Supply Chain Disruptions ................................................. 205
6.8.2. Emerging Geographical Patterns in Supply Chain Strategies ................................... 205
6.8.3. From Just-in-Time to Just-in-Case: Spatial Implications ........................................... 205
6.8.4. Decoupling and De-risking: Reshaping Economic Geography .................................. 206
Copyright © by Vision IAS
All rights are reserved. No part of this document may be reproduced, stored in a retrieval system or
transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise,
without prior permission of Vision IAS.
AHMEDABAD | BENGALURU | BHOPAL | CHANDIGARH | DELHI | GUWAHATI | HYDERABAD | JAIPUR | JODHPUR | LUCKNOW | PRAYAGRAJ | PUNE | RANCHI
3 www.visionias.in # 8468022022 ©Vision IAS
