Details

Autor(en) / Beteiligte

• O'Neil, Jonathan
• Carlson, Richard W
• Francis, Don
• Stevenson, Ross K

Titel

Response to Comment on “Neodymium-142 Evidence for Hadean Mafic Crust”

Ist Teil von

• Science (American Association for the Advancement of Science), 2009-07, Vol.325 (5938), p.267-267

Ort / Verlag

Washington: The American Association for the Advancement of Science

Erscheinungsjahr

2009

Quelle

Science Online科学在线

Beschreibungen/Notizen

• Andreasen and Sharma raise concerns about the neodymium-142 data and age that we reported for rocks from the Nuvvuagittuq greenstone belt in Quebec, Canada. We agree that the issue of accurate mass fractionation correction is important, but stand by our discussion of this issue in our original report and our conclusion that the variation in 142Nd/144Nd ratios reflects the decay of 146Sm caused by Sm-Nd fractionation within 300 million years of Earth's formation. [PUBLICATION ABSTRACT]