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Basis for interpretation regarding the ages of the Serenitatis, Imbrium and Orientale eventsOne of the most important objectives of lunar study is to relate the lunar sample data to important lunar events. This paper utilizes as the basis of interpretation consideration of the following: (1) photogeologic data, (2) the choice of a cratering model, (3) estimates of temperature of impact ejecta and shock-induced heating, (4) petrologic data of lunar breccias and their thermal and shock history, and (5) meaningful age measurements. Both the author's interpretations and alternative views are discussed. The age of the Serenitatis event is not yet known. The interpreted age of the Imbrium event is between 3.90 and 3.84 Ga. The age of the Orientale event is 3.84 Ga.
Document ID
19770046332
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Chao, E. C. T.
Date Acquired
August 8, 2013
Publication Date
March 31, 1977
Subject Category
Lunar And Planetary Exploration
Accession Number
77A29184
Funding Number(s)
CONTRACT_GRANT: NASA ORDER W-13130
Distribution Limits
Public
Copyright
Other

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