Font Size: a A A

The Tentative Study Of Lunar Tectonic Features And Remote Sensing Images Interpretation

Posted on:2009-08-29Degree:DoctorType:Dissertation
Country:ChinaCandidate:Z Y YueFull Text:PDF
GTID:1100360242484058Subject:Institute of Geochemistry
Abstract/Summary:PDF Full Text Request
Based on the most recent study, the Moon is the result of one big collision between the original Earth and another planet approximately to the Mars in size. Throuth the accretion, the remains of the planet and the splashed materials formed the Moon gradually. Relative to the Earth, the Moon has a small quality and volume and the resulted small inner energy. So the geologic activity has almost ceased about 3.1 b.y. except some impacts from exotic aerolite. And it is just the small energy inside the Moon makes it not able to evolve completely and the Moon has the inhomogeneity from the early period. As a result, there is no planty of tectonic appearances on the Moon excepy three important kinds of structures: circular tectonic, linear tectonic and lunar terrain.Circular tectonics are the annular appearances on remote sensing images displayed through architecture and color, which are the most striking features of lunar images. There are two causes for them on lunar surface, one is from the intruded rock and named lunar fornix, and the other is the crater from aerolith. By rebound of impact, the central peaks of craters often exposed olivine from the deep lunar crust, which can be the window to study it. Linear tectonic refers to those structures extend as linear on lunar surface, which can reflect the global or territorial stress condition. For example, lunar grid structures are formed through the tital between the Earth and the Moon; lunar ridges and rima are probably the result of tectonic and magmatic, and the fractures on the floor of craters reflected the stress conditions when the rebound happened after the impact.The southeastern of Oceanus Procellarum is very widely spanned in geologic history. There are plentiful circular structures in this area. In addition, as the mostly affected area by tital force between the Earth and the Moon (sub-Earth), the linear structures is very plentiful and regular, so it is the ideal area in studying lunar tectonic. The study area is located at the joint of FHT and PKT and the SPAT is in the vicinity so the rock types are very plentiful. We distinguished 23 linear structures from region stress combining the Clementine images of the study area, including Echelon Fractures, crater chins, regional faults and starir slope. The direction features are described and the reasons are simply sumerized. In the end, we made the geologic map of rock types in different times combing lunar geologic history.
Keywords/Search Tags:Circular tectonics, Linear tectonic, Clementine, Lunar Prospector
PDF Full Text Request
Related items