Abstract:

The Xiaoyingzi terrene is a typical complex massif，which is characterized by the various lithologic combination．It formed during the intruding of multiperiods magma．It is composed by two independent units and one sequences．The magmatic activity begins from the early Jurassic Epoch and end in the late Jurassic  Epoch．The structural environment had transferred form compression to expand，and had obvious character of passive emplacement．The emplacement mechanism was dyke emplacement in the expand mode1．

Key words: Structural environment, Emplacement mechanism, Xiaoyingzi terene, Hebei