Introduction:
Kankar is a type of sedimentary rock that is commonly found in riverbeds, streambeds, and other water bodies. It is also known as shingle or coarse gravel. Kankar is made up of small, rounded stones that are held together by a natural cementing material, such as calcium carbonate.

Formation:
Kankar is formed by the accumulation of sediment over time. The sediment is made up of small pieces of rock, mineral fragments, and organic matter that have been eroded from the surrounding land. The sediment is transported by water and deposited in a riverbed or streambed. Over time, the sediment becomes compacted and cemented together to form kankar.

Properties:
Kankar is a hard and durable rock that is resistant to weathering and erosion. It is typically composed of limestone or dolomite, which gives it a high calcium content. Kankar is also porous and allows water to pass through it easily.

Uses:
Kankar has been used for a variety of purposes throughout history. In ancient times, it was used to construct buildings and monuments. In modern times, it is used for road construction, landscaping, and as a decorative material. Kankar is also used as a filter medium in water treatment plants.

Conclusion:
In conclusion, kankar is a type of sedimentary rock that is commonly found in riverbeds and streambeds. It is formed by the accumulation of sediment over time and is composed of small, rounded stones held together by a natural cementing material. Kankar is hard and durable, and it has been used for a variety of purposes throughout history.

कंकर - पत्थर