The Apollo 17 drill core - Chemical systematics of grain size fractionsData for 35 major, minor, and trace elements in 40 bulk and size fractions of core 70005-70003 (140-250 cm) are presented. The core is heterogeneous with depth. Moreover, the 1000 to 90 micron coarse fractions are nearly identical but quite different from the less than 20 micron fine fraction. The bulk soil chemistry is governed by the coarse fractions, because of their greater weight proportion in the sample. The 1000-90 micron fraction contains more ilmenite basalt and less orange glass components than the 90-20 micron fraction. The less than 20 micron fraction is consistently enriched in highland material at all depths in the drill core.
Document ID
19800039454
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Laul, J. C. (Battelle Pacific Northwest Labs. Richland, WA, United States)
Lepel, E. A. (Battelle Pacific Northwest Laboratories Richland, Wash., United States)
Vaniman, D. T. (Battelle Pacific Northwest Labs. Richland, WA, United States)
Papike, J. J. (New York, State University Stony Brook, N.Y., United States)