Abstract:

 The lineaments, besides ring structures, are another important structural style, which present linear extension on lunar surface. There are a great variety of lineaments and their origins are diverse. The lineaments which are of great significance to study the tectonic evolution of the moon, could reflect whole lunar or regional tectonic characteristics and their stress state, and in a certain extent the geological information inside the moon, which is important in the research on the tectonic evolution of the moon. In this paper, taking Mare Tranquillitatis as the research region, 284 ridges and 71 rills are identified on the basis of Chang’E II CCD images and DEM data. Then the ridges and the rills can be classified and statistical analysis be conducted. The evolution processes are analyzed by using slope map and contour map combining the distribution of the lineaments on mare region. The result shows that the ridges and rills are mostly distributed in a lower elevation area in the west; the time of the rill formation in Mare Tranquillitatis is nearly the same as the formation of the basin and the filling of basalts, and the time of the ridge formation is almost equivalent with the formation of the impact craters; the formation model of the ridges that one end of Mare Tranquillitatis extends to a crater belongs to the dike model of volcanic process.

Key words: Mare Tranquillitatis, ridges, rilles, quantitative extraction, tectonic evolution, Chang’E II