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研究磁海地区铁矿床时,笔者在辉绿岩的接触带发现,磁海铁矿床矿带顶板的变质岩,既不同于一般所称的“热接触变质岩”,也不同于“区域变质岩”,而是在辉绿岩动力场和热力场综合作用下,形成了特殊的热动力构造带。这种由岩体侵入活动所形成的热动力构造带。对一些产于接触带的矿床可能具有一定的普遍意义。现将其叙述如下,仅供同志们参考。一、热动力构造带及时代磁海矿区热动力构造带呈近东西向展布,东西长约1000米,南北宽约150—300米,延深超过500米。
When studying the iron ore deposits in the magnetic sea area, the authors found in the contact zone of diabase that the metamorphic rocks on the top of the magnetite-iron ore belt are different from the so-called “thermal contact metamorphic rocks” and “ Metamorphic rocks. ”Instead, a special thermodynamic tectonic belt has been formed under the combined effect of diabase’s dynamic and thermal fields. This kind of thermal dynamic tectonic belt formed by intrusion of rock mass. It may be of some universal significance for some deposits to be produced in the contact zone. Now it is described below, for comrades reference only. First, the thermal power structure zone and the era of magnetic sea mine thermal power structure belt was nearly east-west distribution, east-west length of about 1,000 meters, north-south width of 150-300 meters, more than 500 meters deep.