Light from tungsten on core construction
Article Abstract:
Scientists generally agree on the age of the earth's iron core but not on how or how quickly it was formed. A study by D C Lee and A N Halliday sugests formation took more than 60 million years, the time it took most radioactive Hafnium-182 to decay into tungsten-182. Chronometric analysis reveals that hafnium and tungsten are infused into small solid bodies and some of them differentiate to form metallic cores. The level of 182W/184W is more in undifferentiated meteorites as compared to iron meteorites, indicating that significant amount of 182Hf were present during the iron core formation.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
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Mars' core and magnetism
Article Abstract:
Research describing the core and magnetic fields of Mars is presented. In particular the influence of these on any historical atmospheric and environmental phenomena on Mars is discussed.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2001
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A planetary perspective on the deep Earth
Article Abstract:
The author discusses the various planetary studies and astronomical computations that are conducted to provide a better understanding of the Earth's composition, evolution and structure.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2008
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