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'description' => '<p style="margin-right:0cm"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Issue</strong></span></span></p>
<p style="margin-right:0cm"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">Scientists have now studied a meteorite that has been holding clues on the composition of Earth’s mantle.</span></span></p>
<p style="margin-right:0cm"> </p>
<p style="margin-right:0cm"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Background</strong></span></span></p>
<p style="margin-right:0cm"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The crust, mantle and core form important components of the Earth. The composition and structure of crust is known but very little about other two are available.</span></span></p>
<p style="margin-right:0cm"> </p>
<p style="margin-right:0cm"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Details</strong></span></span></p>
<ul>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The meteorite not only offers glimpses into Earth’s mantle composition but also the formation of the Earth itself.</span></span></p>
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<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The research team from IIT-Kharagpur were able to study a shock meteorite. The shock meteorite has undergone various high-temperature and high-pressure conditions.</span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">These changes may have taken place due to an impact event. They were able to conclude that composition of Earth’s mantle and meteorite was same.</span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The meteorite was found near Assam in 2015 and belongs to the asteroid belt located between Jupiter and Mars.</span></span></p>
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<p style="margin-right:0cm"> </p>
<p style="margin-right:0cm"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Observations</strong></span></span></p>
<ul>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The material of the meteorite is composed of Olivine. It is a mineral that is usually found in dark coloured igneous rocks.</span></span></p>
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<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The compound has high crystallisation temperature among major rock forming minerals. It is also found to exist in Earth’s mantle.</span></span></p>
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<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The researchers used electron microscope for high resolution imaging and scanning of the meteorite. </span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">They were able to perform several complex analyses to determine the chemical reaction that takes place in the Earth’s mantle.</span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The Earth’s interior’s properties were controlled through reactions when Olivine breaks up into Magnesiowustite and Bridgmanite.</span></span></p>
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<p style="margin-right:0cm"> </p>
<p style="margin-right:0cm"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>The mantle</strong></span></span></p>
<ul>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The mantle is the second layer of the Earth after the core. It starts from 660 km and spans till 2,700 km under the Earth’s surface.</span></span></p>
</li>
<li>
<p><span style="font-size:11.0pt"><span style="font-family:"Calibri","sans-serif"">It is very difficult to study composition of materials at such depths. Volcanic activities and magma provides the only opportunity for such studies.</span></span></p>
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'title' => 'Meteorite study provides clues on mantle of Earth',
'description' => '<p style="margin-right:0cm"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Issue</strong></span></span></p>
<p style="margin-right:0cm"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">Scientists have now studied a meteorite that has been holding clues on the composition of Earth’s mantle.</span></span></p>
<p style="margin-right:0cm"> </p>
<p style="margin-right:0cm"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Background</strong></span></span></p>
<p style="margin-right:0cm"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The crust, mantle and core form important components of the Earth. The composition and structure of crust is known but very little about other two are available.</span></span></p>
<p style="margin-right:0cm"> </p>
<p style="margin-right:0cm"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Details</strong></span></span></p>
<ul>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The meteorite not only offers glimpses into Earth’s mantle composition but also the formation of the Earth itself.</span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The research team from IIT-Kharagpur were able to study a shock meteorite. The shock meteorite has undergone various high-temperature and high-pressure conditions.</span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">These changes may have taken place due to an impact event. They were able to conclude that composition of Earth’s mantle and meteorite was same.</span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The meteorite was found near Assam in 2015 and belongs to the asteroid belt located between Jupiter and Mars.</span></span></p>
</li>
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<p style="margin-right:0cm"> </p>
<p style="margin-right:0cm"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Observations</strong></span></span></p>
<ul>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The material of the meteorite is composed of Olivine. It is a mineral that is usually found in dark coloured igneous rocks.</span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The compound has high crystallisation temperature among major rock forming minerals. It is also found to exist in Earth’s mantle.</span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The researchers used electron microscope for high resolution imaging and scanning of the meteorite. </span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">They were able to perform several complex analyses to determine the chemical reaction that takes place in the Earth’s mantle.</span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The Earth’s interior’s properties were controlled through reactions when Olivine breaks up into Magnesiowustite and Bridgmanite.</span></span></p>
</li>
</ul>
<p style="margin-right:0cm"> </p>
<p style="margin-right:0cm"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>The mantle</strong></span></span></p>
<ul>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The mantle is the second layer of the Earth after the core. It starts from 660 km and spans till 2,700 km under the Earth’s surface.</span></span></p>
</li>
<li>
<p><span style="font-size:11.0pt"><span style="font-family:"Calibri","sans-serif"">It is very difficult to study composition of materials at such depths. Volcanic activities and magma provides the only opportunity for such studies.</span></span></p>
</li>
</ul>
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