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geological model for boulder 1 at station 2, south massif, valley of taurus-littrowA possible geological model for the origin and history of the materials that make up Boulder 1 is proposed on the basis of firm and probable regional, local, and boulder geological constraints. These constraints are described in detail, unresolved questions are considered, and a model is presented which appears to satisfy all the firm constraints and most of the probable constraints. According to this model, the crystallization of plagioclase and other ANT-suite phases now present in the boulder as clasts and matrix materials took place during the melted-shell stage of lunar history; the original rocks were greatly modified during the cratered-highland stage; and the events that determined the major characteristics of the boulder occurred during the large-basin stage.
Document ID
19760036847
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Schmitt, H. H.
(NASA Office of Energy Programs Washington, D.C., United States)
Date Acquired
August 8, 2013
Publication Date
December 1, 1975
Publication Information
Publication: The Moon
Volume: 14
Subject Category
LUNAR AND PLANETARY EXPLORATION
Distribution Limits
Public
Copyright
Other