摘要
20162307 Li Meng(Department of Geology,Northwest University,Xi’an 710069,China);Zhao Hongge New Understandings of the Genesis of Spheroidal Weathering in Shear Joint Zones(Journal of Geology,ISSN1674-3636,CN32-1796/P,39(4),2015,p.592-598,6illus.,28refs.)Key words:weathering,Helan Mountains,