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GS Paper: GS1-12.Distribution of key Natural Resources (world, South Asia and Indian subcontinent)

  • Places in news: Darvaza Gas Crater

    Turkmenistan President has ordered experts to find a way to extinguish a fire in a huge natural gas crater, the Darvaza gas crater also known as the ‘Gateway to Hell’.

    Darvaza Gas Crater

    • Located in the Karakum desert, 260 kilometres away from Turkmenistan’s capital, Ashgabat, the crater has been burning for the last 50 years.
    • The crater is 69 metres wide and 30 metres deep.
    • While the details of the origin of the crater are contested but it has been said that the crater was created in 1971 during a Soviet drilling operation.
    • In 1971, Soviet geologists were drilling for oil in the Karakum desert when they hit a pocket of natural gas by mistake, which caused the earth to collapse and ended up forming three huge sinkholes.

    Why is it flamed?

    • This pocket of natural gas contained methane, hence to stop that methane from leaking into the atmosphere, the scientists lit it with fire, assuming the gas present in the pit would burn out within a few weeks.
    • The scientists seemed to have misjudged the amount of gas present in the pit, because the crater has been on fire for five decades now.

    A popular tourist attraction

    • The crater has become a significant tourist attraction in Turkmenistan.
    • In 2018, the country’s president officially renamed it as the “Shining of Karakum”.

    Why did Turkmenistan order to extinguish it?

    • Calling it a human-made crater, it has negative effects on both environment and the health of the people living nearby.
    • It also ends up losing valuable natural resources for which could fetch significant profits.

    How harmful are methane leaks?

    • Methane is the primary contributor to the formation of ground-level ozone, a hazardous air pollutant and greenhouse gas, exposure to which causes 1 million premature deaths every year.
    • Methane is also a powerful greenhouse gas. Over a 20-year period, it is 80 times more potent at warming than carbon dioxide.

    Back2Basics: TAPI Gas Pipeline

    • The Turkmenistan–Afghanistan–Pakistan–India (TAPI) Pipeline is a natural gas pipeline being developed with the participation of the Asian Development Bank.
    • It will be a 1,814km trans-country natural gas pipeline running across four countries.
    • It will transport natural gas from the Galkynysh Gas Field in Turkmenistan through Afghanistan into Pakistan and then to India.
    • The plan for the TAPI project was originally conceived in the 1990s to generate revenue from Turkmenistan’s gas reserves by exporting natural gas via Afghanistan to Pakistan and India.
    • Construction on the project started in Turkmenistan on 13 December 2015, work on the Afghan section began in February 2018, and work on the Pakistani section was planned to commence in December 2018.
    • Presently, the construction work has been stalled due to terror activities of Taliban in Afghanistan since few years.

     

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  • Places in news: Carmichael Mine in Australia

    The Adani Group will begin exporting high quality, low sulphur coal from its Carmichael mine in Australia as early as this week, tapping a new multi-decade source to meet energy needs.

    Carmichael Mine

    • The Carmichael mine is located in the North Galilee Basin, more than 300 kilometers from the Queensland coastline and approximately 160 km north-west of Clermont in regional Queensland.
    • The Carmichael project, proposed in 2010, had provoked a sustained campaign by climate activists in Australia and other places globally, forcing banks and insurers not to work with the Adani group.
    • The conglomerate run by India’s second-richest man Gautam Adani has planned an initial production of 10 million tonnes a year from the mines in the Galilee Basin.
    • The Coal mined here has low sulfur content and high calorific value.

     

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  • [pib] Hybodont Shark fossils found in Jaisalmer

    In a rare discovery, teeth of new species of Hybodont shark of Jurassic age have been reported for the first time from Jaisalmer by a team of officers from the Geological Survey of India (GSI).

    Hybodont Shark

    • Hybodonts, an extinct group of sharks, was a dominant group of fishes in both marine and fluvial environments during the Triassic and early Jurassic time.
    • However, hybodont sharks started to decline in marine environments from the Middle Jurassic onwards until they formed a relatively minor component of open-marine shark assemblages.
    • They finally became extinct at the end of the Cretaceous time 65 million years ago.

    Significance of the fossil

    • The newly discovered crushing teeth from Jaisalmer represents a new species named by the research team as Strophodusjaisalmerensis.
    • These sharks have been reported for the first time from the Jurassic rocks (approximately, between 160 and 168 million years old) of the Jaisalmer region of Rajasthan.
    • The genus Strophodus has been identified for the first time from the Indian subcontinent and is only the third such record from Asia, the other two being from Japan and Thailand.
    • It opens a new window for further research in the domain of vertebrate fossils.

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    Back2Basics: Geological time-scale

  • [pib] Gold Reserves in India

    The Minister of Mines and Coal has provided useful information regarding gold reserves in India.

    Gold Reserves in India

    • As per National Mineral Inventory data, the total reserves/resources of gold ore (primary) in the country have been estimated at 501.83 million tonnes as of 2015.
    • Out of these, 17.22 million tonnes were placed under the reserves category and the remaining 484.61 million tonnes were under the remaining resources category.
    • In India, the largest resources of gold ore (primary) are located in Bihar (44%) followed by Rajasthan (25%), Karnataka (21%), West Bengal (3%), Andhra Pradesh (3% ), Jharkhand (2 %).
    • The remaining 2% resources of ore are located in Chhattisgarh, Madhya Pradesh, Kerala, Maharashtra, and Tamil Nadu.

    Who takes up their mapping?

    • Geological Survey of India (GSI) is actively engaged in geological mapping followed by mineral exploration (survey) for various mineral commodities including gold.
    • GSI aims to identify potential mineral-rich zones and establish resources.
    • Every year, as per the approved annual Field Season Program, GSI takes up mineral exploration projects in various parts of the country for augmenting mineral resources.
    • Recently, GoI has amended the MEMC Rules to allow auction of composite license at G4 level for deep-seated minerals including Gold.

    Answer this PYQ in the comment box:

    Consider the following statements:

    1. In India, State Governments do not have the power to auction non -coal mines.
    2. Andhra Pradesh and Jharkhand do not have goldmines.
    3. Rajasthan has iron ore mines.

    Which of the statements given above is/are correct?

    (a) 1 and 2 only

    (b) 2 only

    (c) 1 and 3 only

    (d) 3 only

  • Lithium deposits in Karnataka

    Alongside a move to tap into the global lithium value chain, India has initiated a concerted domestic exploration in Karnataka’s Mandya district.

    Lithium reserves in Karnataka

    • Preliminary surveys by the Atomic Minerals Directorate for Exploration and Research (AMD), an arm of the Department of Atomic Energy has carried out the exploration.
    • AMD is carrying out surface and sub-surface exploration for lithium in potential geological domains of the country.
    • Their research has shown the presence of 1,600 tonnes of lithium resources in the igneous rocks of the Marlagalla-Allapatna region of Karnataka’s Mandya district.

    Must read:

    Global producers of lithium

    • Australia and Chile have swapped positions as the world’s leading lithium-producing country over the past decade. In 2019, the world’s Top 5 lithium producers were:
    1. Australia – 52.9% of global production
    2. Chile – 21.5%
    3. China – 9.7%
    4. Argentina – 8.3%
    5. Zimbabwe – 2.1%
    • The U.S. ranked 7th with 1.2% of the world’s lithium production.

    In 2019, the world’s Top 5 lithium reserves by country were:

    1. Chile – 55.5% of the world’s total

    2. Australia – 18.1%

    3. Argentina – 11.0%

    4. China – 6.5%

    5. U.S. – 4.1%

    Why is the exploration significant?

    • India currently imports all its lithium needs.
    • The find in Mandya is extremely small in quantitative terms, but it marks some initial success in the attempt to domestically mine the silver-white metal by way of hard-rock extraction of the ore.
    • The domestic exploration push comes at a time when India has stepped up its economic offensive against China, a major source of lithium-ion energy storage products being imported into the country.
    • The Marlagalla-Allapatna area is seen as among the most promising geological domains for potential exploration for lithium and other rare metals.

    What lies ahead?

    • India is seen as a late mover in attempts to enter the lithium value chain, coming at a time when EVs are predicted to be a sector ripe for disruption.
    • 2021 is likely to be an inflexion point for battery technology – with several potential improvements to the li-ion technology, and alternatives to this tried-and-tested formulation in advanced stages of commercialization.

    Back2Basic: Li-Ion battery

    • Whittingham developed the first functional lithium-ion battery in 1976, Goodenough brought in a major improvement in 1980, while Yoshino made the first practical-use lithium-ion battery in 1985.
    • Commercially manufactured lithium-ion batteries, based on what Yoshino had developed, made their first appearance in 1991.

    Its’ working

    • Batteries convert chemical energy into electricity.
    • A battery comprises two electrodes, a positive cathode and a negative anode, which is separated by a liquid chemical, called an electrolyte, which is capable of carrying charged particles.
    • The two electrodes are connected through an electrical circuit.
    • When the circuit is on, electrons travel from the negative anode towards the positive cathode, thus generating an electric current, while positively charged ions move through the electrolyte.

  • In news: Galapagos Islands

    Chinese ships are frequently entering Ecuador’s waters for commercial fishing near the Galapagos Islands.

    Try this question from CSP 2018:

    Q.Which one of the following can one comes across if one travels through the Strait of Malacca?

    (a) Bali

    (b) Brunei

    (c) Java

    (d) Singapore

    The Galapagos Islands

    • Renowned worldwide for its unique species, the islands host a wide array of aquatic wildlife, including marine iguanas, fur seals, and waved albatrosses.
    • The giant tortoises found here – ‘Galápagos’ in old Spanish– give the islands its name.
    • Ecuador made a part of the Galapagos a wildlife sanctuary in 1935, and the sanctuary became the Galapagos National Park in 1959.
    • In 1978, the islands became UNESCO’s first World Heritage Site.
    • It was here that the British naturalist Charles Darwin made key observations in 1835 that shaped his theory of evolution. Darwin described the islands as a “world in itself”.