U-Th-Pb systematics on lunar rocks and inferences about lunar evolution and the age of the moon.
Abstract
The investigation reported continues a study conducted by Tera et al. (1974). An attempt is made to summarize all of the data currently available in the literature on terra materials and to discuss the implications of the upper intersection with the concordia curve. Data on total rocks and some plagioclase separates are presented in a graph. The data appear to give further support to a model of a terminal lunar cataclysm associated with intense global bombardment at about 3.9 aeons.
- Publication:
-
Lunar and Planetary Science Conference Proceedings
- Pub Date:
- 1974
- Bibcode:
- 1974LPSC....5.1571T
- Keywords:
-
- Lead Isotopes;
- Lunar Evolution;
- Lunar Rocks;
- Thorium Isotopes;
- Uranium Isotopes;
- Astronomical Models;
- Basalt;
- Chemical Composition;
- Data Reduction;
- Radioactive Age Determination;
- Radiogenic Materials;
- Lunar and Planetary Exploration