Roadmap for Answer Writing 1. Introduction Define non-metallic minerals: Non-metallic minerals are minerals that do not contain metal elements in their composition and are generally not used to extract metals. Instead, these minerals are used for their physical or chemical properties in ...
Model Answer Volcanic Landforms Volcanic landforms are geographical features created by volcanic activity, classified into extrusive and intrusive types based on whether magma cools inside or outside the Earth's crust. Intrusive Volcanic Landforms Intrusive landforms are formed when magma cools andRead more
Model Answer
Volcanic Landforms
Volcanic landforms are geographical features created by volcanic activity, classified into extrusive and intrusive types based on whether magma cools inside or outside the Earth’s crust.
Intrusive Volcanic Landforms
Intrusive landforms are formed when magma cools and solidifies beneath the Earth’s surface. These include various features:
- Batholiths: Large magmatic bodies that cool deep within the crust, often forming large domes. They appear on the surface after denudation. An example is the granitic batholiths found in the Sierra Nevada.
- Laccoliths: Dome-shaped bodies formed at deeper levels, resembling volcanic domes. These can be seen in the Karnataka Plateau.
- Lopoliths: Saucer-shaped intrusions formed when lava moves horizontally along weak planes. They are concave upward.
- Phacoliths: Wavy, intrusive rock masses found at the base of synclines or top of anticlines.
- Sills and Dykes: Horizontal and vertical sheets of intrusive rocks, respectively. Sills are horizontal, while dykes are vertical or steeply inclined rock formations. A notable example is the Deccan Traps in Western Maharashtra.
These intrusive landforms are primarily found in areas like the Deccan Plateau.
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Model Answer Non-Metallic Minerals: Uses and Distribution in India Non-metallic minerals do not contain metals and are categorized into fuel and non-fuel minerals. Key examples include coal, petroleum, natural gas, mica, limestone, and marble. Uses of Non-Metallic Minerals: Coal is primarily used foRead more
Model Answer
Non-Metallic Minerals: Uses and Distribution in India
Non-metallic minerals do not contain metals and are categorized into fuel and non-fuel minerals. Key examples include coal, petroleum, natural gas, mica, limestone, and marble.
Uses of Non-Metallic Minerals:
Distribution Across India: