结构可控的地质解释——侵入岩专题地质填图构想
发布时间：2018-10-05 17:54
【摘要】：火成岩及其组合的性质不仅受岩浆系统本身性质的约束,也受到成岩环境的控制。因此,火成岩分布区的地质填图应当立足于结构可控的地质解释。基于这种认识,建议侵入岩专题填图按照岩浆系统的几何尺度及其与动力系统的关系划分填图单位。一级岩浆系统受控于全球动力学系统,具有最大的几何尺度;二级岩浆系统与区域地质历史有关,是全球动力系统与岩石圈系统相互作用的产物;三级岩浆系统受控于局部动力系统,与全球动力系统没有直接联系;四级岩浆系统受控于岩浆动力系统与围岩动力系统的相互作用,通常与岩浆产量和通道条件紧密联系在一起;五级岩浆系统受控于具体的岩浆过程,通常是侵入岩区的最小填图单位。但是,岩浆系统具有可无限细分的特点,填图过程中可根据具体情况进一步划分更次级的岩浆系统。对于几何尺度小于地质图表述能力的岩浆系统,建议制作局部放大的专题地质图件,以展示特定岩浆系统的地质特征。
[Abstract]:The properties of igneous rocks and their assemblages are not only restricted by the magmatic system itself, but also controlled by diagenetic environments. Therefore, the geological mapping of igneous rock distribution area should be based on the structure controlled geological interpretation. Based on this understanding, it is suggested that the topographic mapping of intrusive rocks should be divided into mapping units according to the geometric scale of magmatic system and its relationship with dynamic system. The primary magmatic system is controlled by the global dynamic system and has the largest geometric scale, and the secondary magmatic system is related to the regional geological history and is the product of the interaction between the global dynamic system and the lithosphere system. The tertiary magmatic system is controlled by the local dynamic system and has no direct connection with the global dynamic system; the fourth grade magmatic system is controlled by the interaction between the magmatic dynamic system and the surrounding rock dynamic system, The fifth grade magma system is controlled by the specific magma process and is usually the smallest mapping unit in the intrusive rock area. However, the magmatic system is infinitely subdivided, and the more secondary magmatic system can be further divided according to the specific conditions in the mapping process. For magmatic systems whose geometric scale is smaller than that of geological maps, it is suggested to make locally enlarged thematic geological maps to show the geological characteristics of specific magmatic systems.
【作者单位】： 中国地质大学地质过程与矿产资源国家重点实验室;
【基金】：中国地质调查局项目《中基性侵入岩中大比例尺专题地质填图试点》(编号:12120115069701)
【分类号】：P588.12;P623
[Abstract]:The properties of igneous rocks and their assemblages are not only restricted by the magmatic system itself, but also controlled by diagenetic environments. Therefore, the geological mapping of igneous rock distribution area should be based on the structure controlled geological interpretation. Based on this understanding, it is suggested that the topographic mapping of intrusive rocks should be divided into mapping units according to the geometric scale of magmatic system and its relationship with dynamic system. The primary magmatic system is controlled by the global dynamic system and has the largest geometric scale, and the secondary magmatic system is related to the regional geological history and is the product of the interaction between the global dynamic system and the lithosphere system. The tertiary magmatic system is controlled by the local dynamic system and has no direct connection with the global dynamic system; the fourth grade magmatic system is controlled by the interaction between the magmatic dynamic system and the surrounding rock dynamic system, The fifth grade magma system is controlled by the specific magma process and is usually the smallest mapping unit in the intrusive rock area. However, the magmatic system is infinitely subdivided, and the more secondary magmatic system can be further divided according to the specific conditions in the mapping process. For magmatic systems whose geometric scale is smaller than that of geological maps, it is suggested to make locally enlarged thematic geological maps to show the geological characteristics of specific magmatic systems.
【作者单位】： 中国地质大学地质过程与矿产资源国家重点实验室;
【基金】：中国地质调查局项目《中基性侵入岩中大比例尺专题地质填图试点》(编号:12120115069701)
【分类号】：P588.12;P623
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