The 25-km Discontinuity: Implications for Lunar History
- 12 October 1973
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 182 (4108) , 158-161
- https://doi.org/10.1126/science.182.4108.158
Abstract
The lunar velocity profile and laboratory data on terrestrial and lunar rocks are constraints on models of lunar history. They show that shock-induced microcracks are absent from the rocks present in the moon today at depths of 25 to 60 kilometers. All possible causes of this observation are examined, and the most likely explanations are that either the rocks at depths of 25 to 60 kilometers formed after the major impacts ceased or the microcracks have annealed at temperatures of about 600°C over geologically long times.Keywords
This publication has 12 references indexed in Scilit:
- Lunar thermal history revisitedEarth, Moon, and Planets, 1972
- Thermal evolution of the moonEarth, Moon, and Planets, 1972
- The Geologic Evolution of the MoonThe Journal of Geology, 1972
- RbSr ages of igneous rocks from the Apollo 14 mission and the age of the Fra Mauro formationEarth and Planetary Science Letters, 1971
- Granites: Relation of Properties in situ to Laboratory MeasurementsScience, 1968
- Some new measurements of linear compressibility of rocksJournal of Geophysical Research, 1965
- Velocity of shear waves in rocks to 10 kilobars, 1Journal of Geophysical Research, 1964
- Velocity of compressional waves in various minerals at pressures to 10 kilobarsJournal of Geophysical Research, 1964
- The velocity of compressional waves in rocks to 10 kilobars: 1.Journal of Geophysical Research, 1960
- Measurement of mercury vapor pressure by means of the Knudsen pressure gaugeJournal of the Franklin Institute, 1923