Nature, Volume 427Sir Norman Lockyer Macmillan Journals Limited, 2004 - Electronic journals |
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Page 208
... core - mantle interaction as surmised from the tungsten isotope 182 W. Formation of the Earth's core ( left ) results in separation of tungsten into the core along with iron , whereas its parent hafnium ( 182Hf ) remains in the mantle ...
... core - mantle interaction as surmised from the tungsten isotope 182 W. Formation of the Earth's core ( left ) results in separation of tungsten into the core along with iron , whereas its parent hafnium ( 182Hf ) remains in the mantle ...
Page 235
... core contributions3 - 5 . If correct , this puts major constraints on the origins of such plumes and core evolution : ( 1 ) providing geochemical evidence for mantle plumes originating at the core - mantle boundary , and ( 2 ) requiring ...
... core contributions3 - 5 . If correct , this puts major constraints on the origins of such plumes and core evolution : ( 1 ) providing geochemical evidence for mantle plumes originating at the core - mantle boundary , and ( 2 ) requiring ...
Page 236
... core contribution ( Fig . 2 ) . W is siderophile during core formation and incompatible during mantle melting . Thus , the depleted mantle has low Wabundances as a result of both of these processes . The W content of the core is ...
... core contribution ( Fig . 2 ) . W is siderophile during core formation and incompatible during mantle melting . Thus , the depleted mantle has low Wabundances as a result of both of these processes . The W content of the core is ...
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