Abstract：Haishenmiao granitic pluton is disintegrated from Dengfeng complex rock by 1 ∶50000 digital geological mapping. Original and tectonic environment are studied by using its petrologic feature,petro-graphic features,and geochemical characteristics. The petrography and major elements indicate that Haishenmiao granitic pluton belongs to TTG gneisses,the concentration of Si O2 is greater than 68%,the concentration of Na2 O is 3. 42% ~ 5. 63%,and the concentration of Al2O3 is average 13. 61% < 15%,poor in content of Ca,Mg.The value of δ is 1. 14 ~ 2. 13. Haishenmiao granitic pluton has low ΣREE,with differentiated LREE / HREE patterns. In the initial standardization diagram of the mantle,it has the similar geochemical characteristics of the high Si Cenozoic adakite with high content of Sr,high ratio of Sr / Y,low content of Cr,N,Yb,Y,and it also has the similar relational features among Nb,Y,Rb,Th,La and Yb in the rocks with island arc volcanics.

Keyword：TTG gneiss;trace element;geochemical characteristics;rock distribution characteristics;