Geography
India: Location and Physiography
The Peninsular Plateau
Peninsular plateau for CGPSC: Central Highlands, Deccan plateau, Western and Eastern Ghats, Meghalaya plateau, peaks, and Chhattisgarh's place on it.
Prerequisites
- India: Location and Extent — the Tropic of Cancer and the Standard Meridian both cross the plateau.
- Chhattisgarh: Physiographic Divisions — the state’s pats, plain and Bastar plateau, which this page places in the national frame.
The Hook: Chhattisgarh Sits on India’s Oldest Ground
Connect
Stand at Amarkantak on the Maikal hills and you can watch the Narmada set off west and the Son set off north. Drive south to Bailadila and the hills are made of iron ore. Head north to Korba and the ground holds coal. All three lie on the Peninsular plateau (प्रायद्वीपीय पठार), the oldest and most stable landmass of India.
Why is the plateau tilted so that most big rivers flow east, why are the Western Ghats a wall but the Eastern Ghats a broken chain, and where exactly does Chhattisgarh fit? This page answers those questions.
Why it matters: Prelims asks about ranges, peaks, hills-to-state matching and the Ghats. Mains GS-III links the plateau to minerals, black soil, rivers and the Western Ghats ecology debate. For a Chhattisgarh aspirant it is also the base of the whole state’s geography.
Basic Features
- Oldest landmass: a part of the ancient Gondwana (गोंडवाना) land, made mostly of very old igneous and metamorphic rocks (Archaean gneiss and schist).
- Shape: a rough triangle, bounded by the Aravalli, Kaimur and Rajmahal hills in the north, the Western Ghats in the west and the Eastern Ghats in the east.
- Area: about 16 lakh km²; general elevation about 600–900 m.
- Stable block: it has not been folded since ancient times. It is a tableland of broad, shallow valleys and rounded hills, with some faulting and rift valleys.
- General slope: from west to east. So the big rivers (Mahanadi, Godavari, Krishna, Kaveri) flow east into the Bay of Bengal and build deltas.
- Exceptions: the Narmada and Tapi flow west through rift valleys and form estuaries.
Divisions of the Plateau
The Narmada divides it into two main parts. A third, detached part lies in the north-east.
graph TD
P["Peninsular Plateau"] --> C["Central Highlands
north of the Narmada"]
P --> D["Deccan Plateau
south of the Narmada"]
P --> N["North-eastern Plateau
Meghalaya, Karbi Anglong"]
C --> C1["Aravalli, Malwa, Bundelkhand,
Baghelkhand, Chotanagpur"]
D --> D1["Satpura-Mahadeo-Maikal,
Western Ghats, Eastern Ghats"]1. Central Highlands (north of the Narmada)
| Unit | Detail |
|---|---|
| Aravalli | One of the oldest fold mountains in the world, now a worn-down range in Rajasthan, Haryana and Delhi; highest point Guru Shikhar (1,722 m), Mount Abu |
| Malwa plateau | Madhya Pradesh; black soil; drained by the Chambal (with its ravines), Betwa and Mahi |
| Vindhya range | North of the Narmada; continues east as the Kaimur hills |
| Bundelkhand and Baghelkhand | Uplands of UP–MP; Baghelkhand extends into northern Chhattisgarh (Koriya region) |
| Chotanagpur plateau | Mainly Jharkhand; Parasnath (1,365 m); the Damodar valley (coal, a rift valley); extends into the Jashpur–Samri pats of Chhattisgarh |
2. Deccan Plateau (south of the Narmada)
| Unit | Detail |
|---|---|
| Satpura range | Between the Narmada and Tapi; Dhupgarh (1,350 m) near Pachmarhi on the Mahadeo hills |
| Maikal range | Eastern end of the Satpura system; Amarkantak (source of the Narmada and Son); its western flank is in Kabirdham, Chhattisgarh |
| Deccan Traps | Basalt from great fissure eruptions around the end of the Cretaceous; mainly Maharashtra; weathers into black (regur) soil |
| Western Ghats (Sahyadri, सह्याद्रि) | Continuous, high, steep on the sea side |
| Eastern Ghats | Discontinuous, lower, cut by east-flowing rivers |
| Dandakaranya (Bastar plateau) | South-eastern Deccan, Chhattisgarh–Odisha–Andhra; Godavari and Indravati basin |
| Telangana and Karnataka plateaus | Granite and gneiss country with tanks for irrigation |
3. North-eastern Plateau
- The Meghalaya plateau (Garo, Khasi and Jaintia hills) and Karbi Anglong (Assam).
- Separated from the Chotanagpur plateau by the Malda gap (Garo–Rajmahal gap), a down-faulted area filled with river sediments.
- Very heavy rainfall on the southern face (Mawsynram, Cherrapunji); rich in coal, iron ore, limestone and uranium.
Western Ghats vs Eastern Ghats
| Point | Western Ghats | Eastern Ghats |
|---|---|---|
| Continuity | Continuous; crossed only through passes (Thal Ghat, Bhor Ghat, Pal Ghat) | Discontinuous; broken by the Mahanadi, Godavari, Krishna, Kaveri |
| Height | Higher: about 900–1,600 m, rising southward | Lower: about 600 m on average |
| Rainfall | Heavy on the western (windward) slope | Less; more from the north-east monsoon in Tamil Nadu |
| Rivers | Source of most peninsular rivers (Godavari, Krishna, Kaveri) | Few major rivers rise here |
| Highest peak | Anamudi (2,695 m), Anaimalai hills, Kerala, the highest in peninsular India | Jindhagada / Arma Konda (about 1,680–1,690 m), Andhra Pradesh; NCERT names Mahendragiri (1,501 m), Odisha |
| Status | UNESCO World Heritage Site (2012); a biodiversity hotspot | Includes Javadi, Shevaroy and Nallamala hills |
The Nilgiri knot
The Western and Eastern Ghats meet in the Nilgiri hills. Doddabetta (2,637 m) is the highest peak of the Nilgiris. South of the Palghat gap, the Anaimalai, Palani and Cardamom hills continue the Western Ghats.
Chhattisgarh on the Plateau
| Chhattisgarh unit | Part of the Peninsular plateau |
|---|---|
| Koriya and Surajpur uplands | Eastern edge of the Baghelkhand plateau |
| Jashpur, Mainpat, Samri pat (Gaurlata, about 1,225 m) | Extension of the Chotanagpur plateau |
| Maikal range (Kabirdham) | Eastern Satpura–Maikal system |
| Chhattisgarh plain (Mahanadi basin) | A basin within the plateau, floored by younger sedimentary rocks |
| Bastar plateau | Dandakaranya, south-eastern Deccan |
Resources from the plateau: Gondwana coal (Korba, Hasdeo–Arand, Mand–Raigarh), Dharwar iron ore (Bailadila, Dalli–Rajhara), limestone for cement, and bauxite on the pats. See Minerals, Energy and Industry of Chhattisgarh.
Significance (for Mains)
- Mineral store: most of India’s coal, iron ore, manganese, bauxite and mica (Chotanagpur, Odisha, Chhattisgarh, Karnataka).
- Black soil: Deccan Trap regur supports cotton, soybean and pulses.
- Rivers and hydropower: steep western edge (Koyna); waterfalls such as Jog and Chitrakote.
- Forests and tribes: home of central India’s forests and major tribal communities (Gond, Baiga, Santhal, Bhil).
- Western Ghats ecology: the Gadgil (2011) and Kasturirangan (2013) reports on Ecologically Sensitive Areas; landslides in Kerala (Wayanad, July 2024) renewed that debate.
Memory Tricks
Peninsular peaks by height: 'A Dog Guards Kalsubai's Mango Plantation Daily'
Anamudi 2,695 > Doddabetta 2,637 > Guru Shikhar 1,722 > Kalsubai 1,646 (northern Sahyadri, Maharashtra) > Mahendragiri 1,501 > Parasnath 1,365 > Dhupgarh 1,350.
Rule of thumb: “South is highest” — Anamudi and Doddabetta beat everything north of them.
West vs East Ghats: 'West is a Wall, East is Eroded'
Western Ghats: continuous wall, higher, wetter. Eastern Ghats: eroded, broken by east-flowing rivers.
Don’t Confuse
| This | vs | That |
|---|---|---|
| Anamudi — highest in peninsular India (Kerala) | vs | Doddabetta — highest in the Nilgiris (Tamil Nadu) |
| Guru Shikhar — Aravalli (Rajasthan) | vs | Dhupgarh — Satpura (Pachmarhi, MP) |
| Narmada, Tapi — west, rift valleys, estuaries | vs | Mahanadi, Godavari, Krishna, Kaveri — east, deltas |
| Garo–Khasi–Jaintia — Meghalaya plateau (Peninsular) | vs | Patkai–Naga–Mizo — Purvanchal (Himalayan) |
| Gaurlata — highest in Chhattisgarh (Chotanagpur extension) | vs | Amarkantak — Maikal, source of the Narmada and Son (MP) |
Common Mistakes
MCQ traps
- “The Aravalli are young fold mountains.” False. They are among the oldest fold mountains in the world; the Himalaya are young.
- “The Eastern Ghats are higher and more continuous than the Western Ghats.” False on both counts.
- “The Meghalaya plateau is part of the Himalaya.” False. It is a detached part of the Peninsular plateau.
- “Doddabetta is the highest peak of South India.” False. Anamudi is.
- “The Narmada flows through a delta into the Arabian Sea.” False. It flows through a rift valley and forms an estuary.
Practice
All questions below are original practice questions written in CGPSC style. They are not previous-year questions.
Level 1: Foundation
- The highest peak of peninsular India is ______.
- The Western and Eastern Ghats meet in the ______ hills.
- The gap that separates the Meghalaya plateau from the Chotanagpur plateau is the ______.
Answers
- Anamudi (2,695 m), Kerala.
- Nilgiri.
- Malda gap (Garo–Rajmahal gap).
Level 2: Prelims MCQs
Q1. Consider the following statements:
- The Western Ghats are more continuous and higher than the Eastern Ghats.
- The general slope of the Peninsular plateau is from east to west.
- The Garo, Khasi and Jaintia hills are part of the Peninsular plateau.
Which of the statements given above is/are correct?
- (a) 1 only
- (b) 1 and 2 only
- (c) 2 and 3 only
- (d) 1 and 3 only
Answer and explanation
(d) 1 and 3 only. The Western Ghats are a continuous, higher wall. The general slope is from west to east, which is why most peninsular rivers flow into the Bay of Bengal, so statement 2 is wrong. The Meghalaya hills are a detached part of the plateau.
Q2. Match List I (Peak) with List II (Range / hills):
| List I | List II |
|---|---|
| A. Guru Shikhar | 1. Satpura (Mahadeo hills) |
| B. Dhupgarh | 2. Nilgiri |
| C. Doddabetta | 3. Aravalli |
| D. Anamudi | 4. Anaimalai |
- (a) A-3, B-2, C-1, D-4
- (b) A-3, B-1, C-2, D-4
- (c) A-1, B-3, C-2, D-4
- (d) A-3, B-1, C-4, D-2
Answer and explanation
(b) A-3, B-1, C-2, D-4. Guru Shikhar is on Mount Abu in the Aravalli. Dhupgarh is near Pachmarhi in the Mahadeo hills of the Satpura. Doddabetta is the highest point of the Nilgiris. Anamudi is in the Anaimalai hills of Kerala.
Q3. Which of the following rivers flow westward through rift valleys?
- Narmada 2. Tapi 3. Godavari 4. Mahanadi
- (a) 1 and 2 only
- (b) 1 and 3 only
- (c) 2 and 4 only
- (d) 1, 2 and 3 only
Answer and explanation
(a) 1 and 2 only. The Narmada (between the Vindhya and Satpura) and the Tapi flow west through rift valleys and form estuaries. The Godavari and Mahanadi flow east and build deltas. The Mahanadi rises at Sihawa in Chhattisgarh.
Q4. The Jashpur–Samri pat region of Chhattisgarh, with the state’s highest peak Gaurlata, is an extension of which plateau?
- (a) Malwa
- (b) Chotanagpur
- (c) Meghalaya
- (d) Telangana
Answer and explanation
(b) Chotanagpur. The north-eastern pats of Chhattisgarh continue the Chotanagpur plateau of Jharkhand. Koriya’s uplands belong to Baghelkhand, and Bastar is part of the Dandakaranya region of the Deccan.
Level 3: Mains Answer Writing
Q1. (60 words) Distinguish between the Western Ghats and the Eastern Ghats.
Model answer outline
- Western Ghats: continuous, higher (900–1,600 m), crossed through passes, heavy orographic rain, source of major peninsular rivers, Anamudi 2,695 m, UNESCO site.
- Eastern Ghats: discontinuous, lower (about 600 m), cut by the Mahanadi, Godavari, Krishna and Kaveri, less rain, Jindhagada/Arma Konda about 1,690 m (NCERT: Mahendragiri).
- Both meet in the Nilgiris.
Q2. (150–200 words) “The Peninsular plateau is the storehouse of India’s mineral and forest wealth.” Discuss with special reference to Chhattisgarh.
Model answer outline
- Intro: Oldest, stable Gondwana block of Archaean igneous and metamorphic rocks, about 16 lakh km², tilted west to east.
- Body:
- Minerals: Dharwar iron and manganese; Gondwana coal (Damodar, Mahanadi, Godavari valleys); bauxite on laterite caps; mica.
- Soils: Deccan Trap black soil (cotton); red and laterite soils elsewhere.
- Forests and tribes: central Indian forests; Gond, Baiga, Santhal, Bhil communities.
- Rivers and power: east-flowing rivers, waterfalls, dams.
- Chhattisgarh angle: Korba and Hasdeo–Arand coal, Bailadila and Dalli–Rajhara iron ore, cement limestone; about two-fifths of the state under forest; the Chotanagpur, Baghelkhand, Maikal and Dandakaranya units all meet here.
- Issues: mining versus forests and tribal rights (Hasdeo debate), displacement, pollution.
- Conclusion: Plateau wealth needs development with environmental and Fifth Schedule safeguards.
Quick Revision Table
| Fact | Detail |
|---|---|
| Origin | Gondwana; oldest, stable block |
| Area / height | About 16 lakh km²; 600–900 m |
| Slope | West to east; Narmada and Tapi are the westward exceptions |
| Central Highlands | Aravalli, Malwa, Vindhya–Kaimur, Bundelkhand, Baghelkhand, Chotanagpur |
| Deccan | Satpura–Mahadeo–Maikal, Deccan Traps, Western and Eastern Ghats, Dandakaranya |
| North-east | Meghalaya (Garo, Khasi, Jaintia), Karbi Anglong; Malda gap |
| Peaks | Anamudi 2,695; Doddabetta 2,637; Guru Shikhar 1,722; Parasnath 1,365; Dhupgarh 1,350 |
| Eastern Ghats top | Jindhagada / Arma Konda about 1,690 m (NCERT: Mahendragiri 1,501 m) |
| Chhattisgarh | Baghelkhand, Chotanagpur, Maikal, Mahanadi basin, Dandakaranya |
Key Takeaways
Key Takeaways
- The plateau is India’s oldest, most stable block, tilted west to east.
- The Narmada splits it into the Central Highlands and the Deccan; Meghalaya is a detached part.
- Western Ghats: continuous and high. Eastern Ghats: broken and low. They meet in the Nilgiris.
- Anamudi is the highest peak south of the Himalaya.
- Chhattisgarh lies wholly on the plateau, which explains its coal, iron ore and forests.
What’s Next
- Coastal Plains and Islands — the edges of the peninsula
- Mineral and Energy Resources of India — what the plateau holds
- Drainage System of India — peninsular rivers
- Chhattisgarh: Physiographic Divisions
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