A STUDY OF INTRUSIVE CONTACT STRUCTURES

This paper gives the major conclusions of intrusive contact structures achieved by authors by applying the theory and methods of geomechanics:(1) the intrusive contact structures themselves form a system which,falling into three basic types,results from the combined action of the emplacement of intrusives and regional tectonic stress;(2) multi-phase activity of ore-controlling structures is related to hydrofracturing;(3) the outer contact structures generally are referred to essentially as thermodynamic metamorphic origin.