Anak Krakatau

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  • Anak Krakatau is a volcanic island in Indonesia.
  • It formed in 1927 after the Krakatoa volcano eruption.
  • Indonesia lies on the Pacific ring of fire.
  • This makes Indonesia vulnerable to earthquakes.
  • Indonesia also houses 127 active volcanoes and one of these volcanoes is the Anak Krakatau.
  • Why in news? Eruption in Anak Krakatau cased a tsunami in Indonesia.

Aravalli Range

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  • It is a range of mountains running in North West direction between Delhi and Palanpur in Gujarat.
  • It constitutes a vital corridor between Asola Bhatti Sanctuary in Delhi and Sariska Tiger Reserve in Rajasthan.
  • The 700km long range and its thick forest cover protects National Captial Region and fertile plains of India from effects of Desert.

Lonar lake

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  • Lonar lake is the only known meteorite crater in basaltic rock and is world famous.
  • This lake, which lies in a basalt impact structure, is both saline and alkaline in nature.
  • The lake is a haven for a wide range of plant and animal life.
  • Resident and migratory birds such as black-winged stilts, brahminy ducks, grebes, shelducks (European migrants), shovellers, teals, herons, red-wattled lapwings, rollers or blue jays, baya weavers, parakeet hoopoes, larks, tailorbirds, magpies, robins and swallows are found on the lake.
  • Among reptiles, the monitor lizard is reported to be prominent.
  • The lake is also home to thousands of peafowls, chinkara and gazelles.
  • The area of 3.83Sq.km was declared as Lonar Wildlife Sanctuary by the government on 20 November 2015.
  • Lonar crater became a geo-heritage site in 1979.
  • It is relatively young geologically, at just 50,000 years old.
  • A meteorite estimated to weigh two-million-tonnes slammed into the Earth, creating a 1.83-km diameter crater where the lake formed.

Ring of Fire

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  • Pacific Ring of Fire is a geologically and volcanically active region that stretches from one side of the Pacific to the other.
  • In a 40,000 km (25,000 mi) horseshoe shape, it is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and/or plate movements.
  • It has 452 volcanoes (more than 75% of the world’s active and dormant volcanoes). 
  • The Ring of Fire is sometimes called the circum-Pacific belt.
  • About 90%of the world’s earthquakes and 81% of the world’s largest earthquakes occur along the Ring of Fire.
  • The next most seismically active region (5–6% of earthquakes and 17% of the world’s largest earthquakes) is the Alpide belt, which extends from Java to the northern Atlantic Ocean via the Himalayas and southern Europe.

 

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Chilika Lake

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  • It is Asia’s largest brackish water lagoon.
  • It is the largest coastal lagoon in India and the second largest coastal lagoon in the world
  • It lies in Odisha state on the eastern coast of India, at the mouth of the Daya River flowing into the Bay of Bengal.
  • Because of its rich bio-diversity and socio-economic importance, Chilika was designated as a Ramsar site in 1981 to afford better protection.
  • It was first waterbody in Indian to be designated as wetland of international importance under the Ramsar Convention.
  • It is the largest wintering ground for migratory birds on the Indian sub- continent.
  • It was put under Montreux Record (record for such sites where there has been or likely to be adverse ecological change due to manmade activities), but was later removed from it due to conservation efforts.
  • Rambha sector in the Chilika Lake is the ideal sector for dolphins to play, flock and mate because of the stillness of the water in the bay area.
  • Chilika, known for its exquisite natural beauty, attracts many tourists because of its dolphin population.

 

 
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