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Heart of Earth Has Its Own Inner Core: Study

by Bidita Debnath on February 10, 2015 at 11:07 PM
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Heart of Earth Has Its Own Inner Core: Study

A new study has revealed that heart of Earth has its own "inner core."

With the help of novel application of earthquake-reading technology, a research team at the University of Illinois and colleagues at Nanjing University in China have found that the Earth's inner core has an inner core of its own, which has surprising properties that could reveal information about our planet.

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The team found a distinct inner-inner core, about half the diameter of the whole inner core. The iron crystals in the outer layer of the inner core are aligned directionally, north-south. However, in the inner-inner core, the iron crystals point roughly east-west.

Not only are the iron crystals in the inner-inner core aligned differently, they behave differently from their counterparts in the outer-inner core. This means that the inner-inner core could be made of a different type of crystal, or a different phase.

The study is published in the journal Nature Geoscience.

Source: ANI
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