Publikationsdatum:
2019-06-27
Beschreibung:
Ten per cent of the 50 to 150-micron size fraction of Luna 20 soil is glass. A random suite of 270 of these glasses has been analyzed by electron microprobe techniques. The major glass type forms a strong cluster around a mean value corresponding to Highland basalt (anorthositic gabbro) with 70% normative feldspar. Minor glass groups have the compositions of mare basalts and of low-K Fra Mauro type basalts. The glass data indicate that Highland basalt is the major rock type in the highlands north of Mare Fecunditatis.
Schlagwort(e):
CHEMISTRY
Materialart:
Earth and Planetary Science Letters; 17; Dec. 197
Format:
text
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