Age of graben systems on the moonThe study focuses on the time of formation of the graben. An attempt is made to determine whether the graben are restricted to geologic units of certain ages, and whether and at what time graben formation ceased. It is shown that (1) most preserved graben formed considerably later than the impacts that formed the basins; (2) graben are faults that are reactivated along older basin concentric and radial structures and lunar grid directions; (3) graben formation ceased about 3.6 + or - 0.2 b.y. ago; and (4) graben formation reflects a tensile stress fields that obtained during part of early lunar history. Other features of graben systems on the moon are also identified.
Document ID
19790055278
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Lucchitta, B. K. (Geological Survey Flagstaff, AZ, United States)
Watkins, J. A. (U.S. Geological Survey Flagstaff, Ariz., United States)