陨击
1.THE RESEARCH DEVELOPMENTS AND PROBLEMS OF SIX METEORITE EVENTS SINCE CENOZOIC ERA
2.LAST RAPID UPLIFT OF QINGHAI-XIZANG PLATEAU AND THE AUSTRALASIAN EVENT OF METEORITES
3.“Synopsis” The basic purpose of this research is to expound the distribution of mass meteorite-stricken relics.
4.Due to the limitation of research conditions, the data such as size of meteorite-stricken relics were roughly calculated according to related maps.
5.Meteorite strike events have severe, great and long-term impact on strata structure of the earth surface.
6.The study on formation cause of plagioclase is closely related to formation cause of geological structure.
7.Recently, a hidden circular structure located on the Yucatan peninsular, Mexico, with a diameter of about 180km was discovered and is considered to be an impact crater relating to the K-T event.
8.The last-phase and strongest uplift of the Qinghai-Tibet plateau occurred at1-0.8Ma BP,which was related to the Australasian meteorite impact event in the triple junction of the Indian Ocean ridge.
9.The most prominent mark of such impact is, it makes the mass meteorite strike relics—ringed mountains scattered over the earth surface, and plagioclase is the most prevailing strata bedding in such mountains.
