引用本文：王丽瑛,黄凡,朵兴芳,屠立鹏.2020.天津矿产资源特征及其成矿规律[J].地质学报,94(1):50-64. WANG Liying,HUANG Fan,DUO Xingfang,TU Lipeng.2020.Characteristics and metallogenic regularity of mineral resources in Tianjin[J].Acta Geologica Sinica,94(1):50-64.
Abstract:Despite its small size Tianjin hosts a variety of mineral resources and complex metallogenic deposits. This paper summarizes the distribution characteristics and spatial- temporal evolution regularity of mineral resources discovered in this region. The metallogenic processes extending over a prolonged geological time interval can be divided into five periods i.e. Archean, Proterozoic, Paleozoic, Mesozoic and Cenozoic. The Proterozoic is the main metallogenic period in Tianjin. Tianjin can be divided into 2 Ⅲ- level and 4 Ⅳ- level tectonic units. Metallic and non- metallic mineral resources are mainly distributed in the Jitang rift valley in the northern Ⅳ- level tectonic units of Tianjin, while the oil and gas, geothermal minerals and groundwater are mainly located within the Huanghua depression in southern Tianjin. Based on the spatial and temporal distribution of mineral resources and their tectonic setting, Tianjin can be divided into 2 Ⅲ- level and 6 Ⅳ- level metallogenic belts. On this basis, 11 metallogenic series and 22 subseries are identified, regional metallogenic lineages are established, and the evolutionary trends of different mineralization, metallogenic units and metallogenic series are discussed and summarized. It is believed that sedimentation is the most important mineralization process in Tianjin. The metallogenic series shows the evolutionary trend from Mesoproterozoic metals and non- metals to late Paleozoic- Mesozoic coal, and finally to Cenozoic oil and natural gas. Over time the metallogenic series have developed diversified characteristics in different metallogenic units.