Peninsular Mountains of India: Ranges, Features, and Map

The Peninsular Mountains of India are among the oldest landforms in the world, formed during the Paleozoic Era as a result of the breakup of Gondwana Land. Unlike the young and fold-type Himalayas, these mountains are mostly block mountains made up of hard igneous and metamorphic rocks, which makes them stable and less prone to geological changes. Major ranges include the Aravalli, Vindhya, Satpura, Western Ghats, and Eastern Ghats, each with distinct features and geographical importance. These mountains play a crucial role in shaping India’s drainage system, influencing the monsoon climate, and supporting rich biodiversity, especially in the Western Ghats region.

Peninsular Mountains

The Peninsular Mountain Ranges in Central and Southern India are ancient formations from the Paleozoic Era, dating back 250 to 540 million years. This contrasts with the geologically younger Himalayas. Their age difference contributes to distinct characteristics in their formation, rock composition, and overall structure.

Origin and Characteristics of Indian Mountain Ranges

While the Himalayas are widely known, they have a relatively recent origin, forming during the Cenozoic Period approximately 40-50 million years ago. Conversely, the Peninsular Mountain Ranges are significantly older, having formed during the Paleozoic Era, roughly 250 to 540 million years ago. This vast difference in formation periods leads to notable distinctions in their geological characteristics.

Comparative Structure: Himalayan Mountains vs. Peninsular Mountains

Comparative Structure: Himalayan Mountains vs. Peninsular Mountains

The Himalayan Mountains and Peninsular Mountains differ significantly in their origin, structure, and geological features. Understanding these differences helps in better grasping India’s physical geography and landform evolution.

• Age:

• Himalayas are young mountains (around 40–50 million years old).

• Peninsular Mountains are very old (250–540 million years old).

• Type of Mountains:

• Himalayas are fold mountains.

• Peninsular Mountains are mostly block mountains.

• Formation:

• Himalayas formed due to the collision of tectonic plates.

• Peninsular Mountains formed from the breakup of Gondwana Land.

• Rock Structure:

• Himalayas mainly consist of sedimentary rocks.

• Peninsular Mountains are made of igneous and metamorphic rocks.

• Geological Activity:

• Himalayas are still rising and active.

• Peninsular Mountains are stable and inactive.

• Relief Features:

• Himalayas have high, rugged peaks and deep valleys.

• Peninsular Mountains are lower with rounded hills due to erosion.

• Stability:

• Himalayas are less stable and prone to earthquakes.

• Peninsular Mountains are highly stable and rigid. 

Major Peninsular Mountain Ranges

The Peninsular Mountains are broadly categorized into the Aravalli Range, Vindhya Range, Satpura Range, Western Ghats, and Eastern Ghats.

Aravalli Range

• Alignment & Extent: Aligned in a northeast-southwest direction, extending approximately 800 km from Delhi to Palanpur in Gujarat.

• Geological Age: Its evolution began in the Archaean Era, about 4500 million years ago, making it one of the world's oldest fold mountains.

• Average Height: 400-600 meters.

• Visibility: The Aravalli Range is distinctly visible in Rajasthan but less so in Haryana and Delhi. Its northern end is considered the Delhi Ridge.

• Key Locations:

• Mount Abu: Located in the Aravallis of Rajasthan, separated from the Banas Valley.

• Highest Peak: Guru Shikhar (located in Mount Abu).

• Passes: Piply Ghat, Divair, and Desuri passes aid transportation across the range.

Vindhya Range

• Alignment & Extent: Runs in an east-west direction, almost parallel to the Narmada Valley, from Jobat (Gujarat) to Sasaram (Bihar).

• Average Height: Approximately 300-650 meters.

• Significance: Acts as a crucial watershed between the Ganga River System and the Peninsular River System.

• Rivers Originating: Major rivers such as Chambal, Betwa, and Ken originate here.

• Highest Peak: Sadbhavna Shikhar (also known as Goodwill Peak), with a height of 752 meters.

Satpura Range

• Etymology: The name "Satpura" means "seven mountains" (Sat = 7, Pura = mountains), referring to a series of seven mountains.

• Alignment & Extent: Stretches for approximately 900 km in an east-west direction, located south of the Vindhyas and roughly parallel to the Narmada and Tapi rivers.

• Geological Features: Parts of the Satpura range are folded and are also known as structural uplifts or horsts.

• Highest Peak: Dhupgarh, located in the Mahadeo Hills near Pachmarhi.

• Important Peak: Amarkantak, from where several important Peninsular rivers originate.

Western Ghats

• Alternative Name: Known as Sahyadris in Maharashtra and Goa.

• Extent: Forms the western edge of the Deccan Plateau, stretching approximately 1600 km from the Tapi Valley in the north to Kanyakumari in the south.

• States Covered: Passes through Gujarat, Maharashtra, Goa, Karnataka, Kerala, and Tamil Nadu, separating the Deccan Plateau from the narrow coastal plains.

• Significance:

• Included in the UNESCO World Heritage Site list.

• Recognized as one of the world's 36 biodiversity hotspots due to its rich biodiversity.

• Plays a significant role in influencing the Indian monsoon mechanism.

• Northern Section:

• Peaks: Kalsubai (near Igatpuri), Salher (near Nashik), Mahabaleshwar, and Harishchandragarh.

• Passes: Thal Ghat and Bhor Ghat connect the Konkan plains to the Deccan Plateau.

• Middle Section:

• Predominantly dense forest areas.

• Peaks: Babudan Mala, Kudremukh, and Pushpagiri.

• Meeting Point: The Middle Western Ghats converge with the Eastern Ghats in the Nilgiri Mountains. The Nilgiris are at the trijunction of Karnataka, Kerala, and Tamil Nadu.

• Important Peaks (Nilgiris): Doddabetta and Mukurthi.

• Southern Section:

• Separated from the main Sahyadri range by the Palghat (Palakkad) Gap.

• Palghat Gap: A rift valley connecting the plains of Tamil Nadu to the coastal plains of Kerala.

• Highest Peak: Anai Mudi, also known as the "Everest of South India".

Eastern Ghats

• Location: Runs almost parallel to India's eastern coast.

• Extent: Stretches from the Mahanadi River in Odisha to the Vaigai River in Tamil Nadu.

• Discontinuity: The Eastern Ghats lack physiographic continuity as numerous east-flowing Peninsular rivers divide the range.

• Northern Parts (between Mahanadi and Godavari):

• Ranges: Includes the Maliya and Madhur Kundal Ranges.

• Highest Peak of Maliya Range: Mahendragiri.

• Highest Peak of the entire Eastern Ghats: Jindhagada Peak (located in the Araku Valley).

• Southern Parts:

• Prominent Peaks: Armakonda, Gali Konda, and Sinkarametta.

• Between Godavari and Krishna Rivers: The Eastern Ghats lose distinct hill character; Gondwana formations dominate.

• Andhra Pradesh:

• Hills between Cuddapah and Kurnool districts are known as the Nallamala Range.

• The southern part is called the Palkonda Range.

• Further South: Hill heights decrease. Only the Javadi Hills, Shevaroy Hills, and Kalrayan Hills remain distinct, exceeding 1000 meters.

• Merging Point: The Eastern Ghats eventually merge with the Western Ghats in the Nilgiri Hills.

Peninsular Mountains of India Map

The map of the Peninsular Mountains of India shows the major mountain ranges spread across central and southern India. The Aravalli Range lies in the northwest, while the Vindhya and Satpura ranges run across central India, forming important watersheds. Along the western edge, the Western Ghats (Sahyadris) stretch parallel to the Arabian Sea, and on the eastern side, the Eastern Ghats run discontinuously along the Bay of Bengal coast. These ranges together form the backbone of the Peninsular Plateau and play a key role in India’s climate, drainage system, and biodiversity.