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Inference on terrestrial genesis from molybdenum isotope systematics
Author(s) -
Dauphas Nicolas,
Marty Bernard,
Reisberg Laurie
Publication year - 2002
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2001gl014237
Subject(s) - enstatite , chondrite , geology , isotope , meteorite , molybdenum , astrobiology , geochemistry , crust , mantle (geology) , achondrite , chemistry , physics , inorganic chemistry , quantum mechanics
It has been suggested that a genetic relationship exists between the Earth and enstatite chondrites. The discovery of non mass dependent molybdenum isotope anomalies (Mo‐w) at a macroscopic scale raises the possibility of using this element as a tracer of genetic relationships. We have determined the molybdenum isotopic compositions of enstatite chondrites (EH and EL) and terrestrial lavas presumably derived from the deep mantle (Loihi seamount, Hawaii). The molybdenum isotopic compositions are identical, suggesting a common source reservoir. The conclusion is that although distinct, the Earth shares similarities with enstatite chondrites from a chemical and isotopic point of view because both formed in the inner regions of the solar system.