Discovery of a nanodiamond-rich layer in the Greenland ice sheet

KURBATOV, Andrei V.; MAYEWSKI, Paul A.; STEFFENSEN, Jorgen P.; WEST, Allen; KENNETT, Douglas J.; KENNETT, James P.; BUNCH, Ted E.; HANDLEY, Mike; INTRONE, Douglas S.; QUE HEE, Shane S.; MERCER, Christopher; SELLERS, Marilee; Feng SHEN; SNEED, Sharon B.; WEAVER, James C.; WITTKE, James H.; STAFFORD Jr., Thomas W.; DONOVAN, John J.; Sujing XIE; RAZINK, Joshua J.
October 2010
Journal of Glaciology;2010, Vol. 56 Issue 199, p747
Academic Journal
The article discusses a study on a section of the Greenland ice sheet with abundant nanodiamond (ND) and lonsdaleite in Kangerlussuaq. It mentions the intention of the researchers to collect continuous ice samples from the end of the last glacial episode through the early Holocene. About one-third of the total ND detected in the ND-rich layer are lonsdaleite. One of the hypotheses regarding the origin of the Greenland ND-peak layer is the failure to identify the lonsdaleite and ND conclusively. Dust stratigraphy served as the basis of an inferred last deglacial age for the ND-peak layer, which was the only known depositional layer of free diamonds.


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