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What types of rock make up the Mizo Hills?

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Map highlighting the northeastern Indian state of Mizoram in orange, with its capital Aizawl marked. Surrounding countries including Bangladesh, Myanmar, China, Nepal, Bhutan, Pakistan, Afghanistan, Iran, Sri Lanka, Thailand, and the Maldives are shown in relation to India, with major bodies of water like the Arabian Sea, Bay of Bengal, and Indian Ocean labeled. — Mizoram Mizoram, India.

The Mizo Hills are composed of Cenozoic rocks, which date back between 2.6 and 65 million years. These geological formations consist of sandstone, limestone, and shales.1