The North-Western Lava Plateau (primarily the Deccan Traps, often referred to as the Maharashtra Plateau) and the Chotanagpur Plateau are two distinct physiographic units of Peninsular India, differing significantly in their geological formation, topography, soil, drainage, and resource endowment.

Here's a distinction of their geographical aspects:

1. Geological Formation:

• North-Western Lava Plateau (Deccan Traps): Formed by massive volcanic eruptions during the late Cretaceous to early Eocene periods (approximately 60-68 million years ago). These eruptions resulted in successive layers of basaltic lava flows, creating a vast igneous province. The term 'trap' refers to the step-like hills formed by the weathering of these horizontal lava flows.
• Chotanagpur Plateau: An ancient plateau, primarily composed of Precambrian crystalline and metamorphic rocks (granites, gneisses, schists). It is a part of the Gondwana landmass and has undergone significant uplift and erosion over geological time, exposing its rich mineral wealth.

2. Location and Extent:

• North-Western Lava Plateau: Primarily covers the state of Maharashtra, extending into parts of Gujarat, Madhya Pradesh, and Karnataka. It forms a significant portion of the western and central Peninsular India.
• Chotanagpur Plateau: Located in the eastern part of Peninsular India, covering much of Jharkhand, northern Chhattisgarh, western West Bengal, and parts of Odisha and Bihar.

3. Topography and Relief:

• North-Western Lava Plateau: Characterized by a relatively flat to gently undulating topography, with step-like escarpments (ghats) on its western edge. The general slope is towards the east. It features broad, open valleys and rounded hills.
• Chotanagpur Plateau: A highly dissected plateau with a rugged topography. It features numerous residual hills (monadnocks), deep river valleys, and scarps. The highest parts are known as 'pats' (e.g., Netarhat Pat). It has an average elevation of about 700 meters, but varies significantly.

4. Soil Type:

• North-Western Lava Plateau: Predominantly covered by black soils, also known as 'Regur' soils. These soils are derived from the weathering of basaltic lava, are rich in clay minerals, highly fertile, and have excellent moisture-retention capacity, making them ideal for cotton cultivation.
• Chotanagpur Plateau: Primarily characterized by red and laterite soils. These soils are formed from the weathering of ancient crystalline rocks, are generally less fertile than black soils, and are often acidic. They are suitable for crops like rice, millets, and pulses with proper management.

5. Drainage System:

• North-Western Lava Plateau: Drained by major east-flowing rivers like the Godavari, Krishna, and their tributaries, which originate in the Western Ghats and flow across the plateau. The Narmada and Tapi rivers flow westwards along rift valleys on its northern edge.
• Chotanagpur Plateau: Drained by several important rivers, including the Damodar, Subarnarekha, Koel, and Barakar. These rivers are often characterized by rapids and waterfalls due to the dissected nature of the plateau, making them suitable for hydroelectric power generation.

6. Mineral Resources:

• North-Western Lava Plateau: Relatively poor in major metallic mineral resources, though it has deposits of bauxite (from lateritization of basalt) and some building stones.
• Chotanagpur Plateau: Extremely rich in mineral resources, often called the 'Ruhr of India.' It is a storehouse of coal (Damodar Valley), iron ore, mica, bauxite, copper, limestone, and other minerals, which have fueled industrial development in the region.

7. Vegetation and Agriculture:

• North-Western Lava Plateau: Agriculture is dominant, with cotton, jowar, bajra, and sugarcane being major crops. Natural vegetation includes dry deciduous forests and thorny scrub.
• Chotanagpur Plateau: Significant forest cover, particularly tropical dry deciduous forests. Agriculture includes rice, maize, pulses, and oilseeds. Mining and related industries are prominent.