A Sketch of Structural Geology
Chinese scientists in the field of structural geology, or geotectonics, can be grouped into two main schools by their theoretical approach to the subject. One is called the geodynamical school, geologists of which, headed by Li Ssu-kuang, analyse geological structures and explain geotectonic phenomena from the point of view of geodynamics. The other is known as the geohistorical school, represented by Huang Chi-ching, Chang Wen-yu, Chang Po-sheng, Ch’en Kuo-ta and others, who are guided mainly by the concept of geohistorical development. The latter embraces three major groups which tend to establish themselves as independent schools. One group is represented by Huang Chi-ching with his “polycyclic theory;” another is led by Ch’en Kuo-ta who supports the “geotrough theory;” the third group is somewhere between the first two groups (and in some questions between the two schools). The two schools, and the groups within the second school, differ in their theoretical explanation of geotectonics, and as a result give different tectonic division of the country, though chiefly in the category of minor features. The theoretical approaches of these schools and groups do not matter greatly to the subject of this work, and the author will outline them very briefly.