One of the most practical developments in methods of teaching historical geology during the last two decades is the wide use of palaeogeographic maps. As an in
During the years of 1869-1870 von Richthofen~1 first studied the geologyof Kwangtung province.His journey was,however,only confined to atraverse route along th
Our knowledge in the past few years concerning the generalgeology of the Western Hills has been greatly improved.A detailedreport with geological maps is now b