Hafnium and iron isotopes in early Archean komatiites record a plume-driven convection cycle in the Hadean Earth
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- 作者：Oliver Nebela ; oliver.nebel@anu.edu.au" class="auth_mail ; Ian H. Campbella ; Paolo A. Sossia ; Martin J. Van Kranendonkb ; c
- 关键词：Hadean ; convection ; komatiites ; hafnium isotopes ; iron isotopes ; cold drips
- 刊名：Earth and Planetary Science Letters
- 出版年：1 July 2014
- 年：2014
- 卷：397
- 期：Complete
- 页码：111-120
- 全文大小：1580 K
文摘
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Hf–Fe isotopes identify a refractory mantle component in Archean Pilbara komatiites.
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This mantle component is termed the Early Refractory Reservoir (ERR).
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Melting in Hadean mantle plume created a high Lu/Hf and light Fe isotope reservoir.
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The ERR appears complementary in Hf isotopes to Hadean Narryer terrane zircons.
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Parts of the ERR cycled via cold drips and hot plumes in the Hadean mantle.