Ls. Tarasov et al., TRACE-ELEMENT DISTRIBUTION IN LUNAR ROCKS OF VARIOUS TITANIUM CONTENTBY SR-XFA DATA, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 359(1-2), 1995, pp. 312-316
The distribution of trace elements (Rb, Sr, Y, Zr, Nb) in various type
s of lunar mare basalts has been investigated by SR-XFA. The new data
of Apollo 11, Apollo 12, and Apollo 15 and also our earlier published
data of other mare basalts have been discussed. Geochemical groups and
trends for rocks of various titanium content were distinguished on th
e basis of diagrams of Zr vs. Sr and of Y vs. Zr. The problem regardin
g the magmatic sources of various types of lunar basalts has been cons
idered.