The genesis of granites one of the most controversial issues in the geosciences.Some ideas of the genetic types of granites are gradually accepted by scholars.The well known classification which divides granites into the I type and s type and that which divides granites into the magnetite series and ilmenite series consider mainly the source materials forming the granites.The genetic classifications of granites related to the“geosyucline platfrorm”tectonics has advanced an important step towards the cla...