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Imbrian-Age Highland Volcanism on the Moon: The Gruithuisen and Mairan Domes

James W. Head III and Thomas B. McCord
Science
New Series, Vol. 199, No. 4336 (Mar. 31, 1978), pp. 1433-1436
Stable URL: http://www.jstor.org/stable/1745970
Page Count: 4
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Imbrian-Age Highland Volcanism on the Moon: The Gruithuisen and Mairan Domes
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Abstract

The Gruithuisen and Mairan domes on the moon represent morphologically and spectrally distinct nonmare extrusive volcanic features of Imbrian age. The composition, morphology, and age relationships of the domes indicate that nonmare extrusive volcanism in the northern Procellarum region of the moon continued until about 3.3 × 10$^{9}$ to 3.6 × 10$^{9}$ years ago and was partially contemporaneous with the emplacement of the main sequence of mare deposits.

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