Pre-4.2 AE mare-basalt volcanism in the lunar highlands

Details Pre-4.2 AE mare-basalt volcanism in the lunar highlands Pre-4.2 AE mare-basalt volcanism in the lunar highlands

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983e%26psl..66...33t&link_type=abstract

Earth and Planetary Science Letters (ISSN 0012-821X), vol. 66, Dec. 1983, p. 33-47. NASA-supported research.

Computer Science

53

Basalt, Chronology, Lunar Geology, Lunar Maria, Lunar Surface, Volcanology, Geochemistry, Mineralogy, Olivine, Petrography, Trace Elements

Scientific paper

The discovery of a 4.23 AE, low-Ti composition mare basalt from the Fra Mauro Formation has challenged the hypothesis that the plutonism of the lunar highlands and the mare-type volcanism are two separate problems in both space and time. Attention is presently given to data indicating that non-KREEPy, mare-type volcanism began at least as early as 4.2 AE in the Fra Mauro region, and probably across much of the lunar surface. Massive bombardment during the 'terminal cataclism', and the subsequent veneer of younger mare basalts has obliterated most of the evidence for these ancient volcanic events, which may be related to such basin-forming events as the impact-triggered igneous activity that made Procellarum.

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