摘要
岩石的磁化率是各向异性的,作者对这一问题曾有专著论述。本文介绍了这一方法在苏南若干构造上的应用问题。所作岩石磁性组构初步结果反映了构造分布和相对动向的某些特点,证明该方法在岩石组构研究方面的重要性和适用性。
The magnetic fabric of rock is a new-developed field in the aspect of petrofabric in the last decade.It studies the degree of ordering within the inner of rocks through anisotropic property of magnetic susceptibility.In Jiangsu province,it has been used to study the overthrust structure of Donling,Yixing,the thrust fracture in Zhuji coal deposit,Liyang and epizonal metamorphic rock system and its structures in Gaoqiao,Picheng. The practical application indicates that the magnetic fabric of rocks can play a much more impotant role that the consequent petrofabric.Firstly,the three primary magnetic susceptib- ilities and primary magnetic directions measured in weak magnetic field are very constant. They reflect the real physical properties of rocks.Secondly,they can correlated with other geological or physical parameters through a certain coordinate conversion.Thirdly,It can offer multiple values on each directions to be sellected to correlated with related geological inform- ation.It describes the characters of inner vectors of material allocation.The parameters such as foliation,lineation,anisotropy and totall magnetic susceptibility,can reflects the degree of different structure development by comparing them in different rocks.Finally,the characteris- tics of petrofabric is quantified.
出处
《江苏地质》
1990年第3期33-36,共4页
Jiangsu Geology
