The competition between thermal contraction and differentiation in the stress history of the moon

Details The competition between thermal contraction and differentiation in the stress history of the moon The competition between thermal contraction and differentiation in the stress history of the moon

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....9412133k&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, Sept. 10, 1989, p. 12133-12144.

Physics

21

Lunar Evolution, Lunar Geology, Planetary Temperature, Basalt, Boundary Value Problems, Lunar Core, Lunar Surface, Thermal Expansion, Thermal Stresses, Moon, Thermal Effects, Contraction, Differentiation, Stress, History, Density, Mineralogy, Models, Radius, Parameters, Temperature, Volume, Composition, Calculations, Maria, Basalt, Freezing, Origin, Formation

Scientific paper

The stress history of the moon is discussed, taking into consideration the effects of thermal contraction and differentiation. The amount of expansion caused by extracting basalt from undifferentiated lunar material is estimated taking account of the uncertainty in the knowledge of the appropriate compositions, and the resulting estimate of the expansion is used to compare the relative importance of the thermal and differentiation effects in the moon's volumetric history. The results of calculations show that differentiation is likely to be of major importance and, thus, thermal expansion is not the sole possible contributor to evolutionary changes in the lunar radius.

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