区域矿床成矿谱系的概念、内涵及其应用

Metallogenic pedigree of regional mineral deposits:Concept,connotation and application

谱系学是一种方法论,原义是指分析关于家族世系、血统关系和重要人物事迹的方法,它有助于辨明人物的身份、认识事物的特征和理解事物的起源及其演变过程。研究者将其应用到自然科学领域,提出了区域矿床成矿谱系(简称“区域成矿谱系”)的概念,揭示出一定区域内地质历史发展过程中成矿作用的演化轨迹及其时空结构。地质历史跟人类历史一样是连续演化的,尽管有时缺失记录,但每一个特定空间范围内,成矿作用也是必然在发生的,只是其成矿的效果带有极大的偶然性,究竟形成的是什么矿种、什么类型、多大规模的矿床等,都取决于该空间范围内不同历史时期的成矿作用及其发育程度。区域成矿谱系相当于成矿作用的“家谱”,即以图谱的方式记录一定时空范围内的成矿作用及其演化轨迹。此概念是在区域成矿规律研究的基础上结合矿床的成矿系列理论新进展而提出来的,不仅充实了矿床的成矿系列理论,并且更形象地表达了矿床成矿系列的时间顺序和空间定位规律,有助于阐述区域成矿作用与地质构造环境之间的关系及其发生、发展的过程。由区域成矿谱系进一步提出“全位成矿,缺位找矿”的理念,至今已经20年了,其已在实践中得到了检验和发展,并在指导找矿的过程中发挥了积极作用。

Genealogy is a kind of methodology,originally refers to the technology of recording about family lineage,blood relations and deeds of important peoples.It helps to identify the identity of people,understand the characteristics and origin of things and their evolution.By applying the genealogy to the natural science field,the concept of metallogenic pedigree of regional mineral deposits(regional metallogenic pedigree for short) has been put forward,which is used to reveal the evolution and spatial-temporal structure of mineralization in the process of geological tectonic environment evolution in a region.Geological history,like human history,is continuous,though sometimes the historical record is missing.Therefore,the mineralization is also inevitable in every specific region,but the effect of mineralization is very accidental.What kind of mineral,what type and scale of deposit are formed depends on the mineralization and its development degree in different historical periods within the region.The regional metallogenic pedigree is equivalent to the“genealogy”of mineralization,that is,it records the mineralization and its evolution trajectory in a certain spatial-temporal range by pattern of atlas.The regional metallogenic pedigree is put forward based on the study of regional metallogenic regularity and the new development of metallogenic series theory,not only enriches the theory of metallogenic series theory,but also better expresses the time sequence and spatial orientation regularity of metallogenic series for mineral deposits and expounds the relationship between regional mineralization and metallogenic geological environment as well as their occurrence,development and evolution process.On the basis of the regional metallogenic pedigree,the concept of“Ore-formation in all-positions and ore-prospecting in ore-vacant-positions”was further put forward,which has been tested and developed in practice for 20 years,and played an active role in guiding the process of prospecting.