Coupled 142Nd-143Nd Isotopic Evidence for Hadean Mantle Dynamics

The oldest rocks - 3.85 billion years old - from southwest Greenland have coupled neodymium-142 excesses (from decay of now-extinct samarium-146; half-life, 103 million years) and neodymium-143 excesses (from decay of samarium-147; half-life, 106 billion

Bibliographic Details
Published in:Science
Main Authors: Bennett, Victoria, Brandon, Alan D, Nutman, Allen P
Format: Article in Journal/Newspaper
Language:unknown
Published: American Association for the Advancement of Science
Subjects:
Keywords: isotope
neodymium
neodymium 142
neodymium 143
samarium
unclassified drug
chondrite
Hadean
heterogeneity
mantle chemistry
silicate
temporal variation
article
astronomy
Australia
dynamics
geochemistry
Greenland
half life time
m
Online Access:http://hdl.handle.net/1885/26972
https://doi.org/10.1126/science.1145928
https://openresearch-repository.anu.edu.au/bitstream/1885/26972/5/V.Bennett_et_al_Science_2007.pdf.jpg
https://openresearch-repository.anu.edu.au/bitstream/1885/26972/7/01_Bennett_Coupled_142Nd-143Nd_Isotopic_2007.pdf.jpg
Description
Summary:The oldest rocks - 3.85 billion years old - from southwest Greenland have coupled neodymium-142 excesses (from decay of now-extinct samarium-146; half-life, 103 million years) and neodymium-143 excesses (from decay of samarium-147; half-life, 106 billion

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