摘要：

豫西地区中元古界蓟县系分布较广泛，剖面完整，是华北地台蓟县系出露最好的地区之一。在研究和分析121个露头剖面的岩性、沉积构造及组合特征等各种定性及定量资料的基础上，采用冯增昭教授倡导的单因素分析多因素综合作图法， 编制出豫西地区中元古代蓟县纪早期、中期和晚期的各类单因素图件和沉积相图。这种定量的沉积相研究方法在豫西地区还是首次应用。在蓟县纪早期，豫西地区主要是无障壁海岸相和浅海相，其中在卢氏—栾川地区主要为障壁海岸相。蓟县纪中期的沉积相与早期相似，但在卢氏—栾川地区由障壁海岸相演变为碳酸盐岩局限台地相。蓟县纪晚期的沉积相格局发生了较大变化，嵩山—箕山地区由古陆演变为河口湾相，确山地区为障壁海岸相，卢氏—栾川地区的碳酸盐岩局限台地相和其他地区的滨海相变化不大。从蓟县纪早期到蓟县纪晚期是一个海域范围逐渐扩大的海侵过程。

Abstract:

The Mesoproterozoic Jixianian  is widely distributed and its complete section was developed in western Henan Province，one of the best areas in the North China Platform where the stratum of the Mesoproterozoic Jixianian  is distributed. Based on all kinds of qualitative and quantitative data of the features and associations of sedimentary rocks and sedimentary structures of 121 outcrops，the maps of single factors and sedimentary facies of the Early, Middle and Late  Jixianian of Mesoproterozoic in western Henan Province have been compiled, using the single factor analysis and multifactor comprehensive mapping method proposed by professor Feng Zengzhao. It is the first time to apply this quantitative method in western Henan ProvinceIn the Early Jixianian,  western Henan Province was characterized by the deposition of beach facies and neritic facies， and in Lushi—Luanchuan areas barrier beach facies was dominantThe facies of the Middle Jixianian were  similar to those of the Early Jixianian， but the Lushi—Luanchuan area was characterized by a restricted  carbonate platform.  The pattern of facies of the Late Jixianian had changed. Songshan—Jishan area changed from an old land to a branching bay. Queshan area received deposition of barrier beach facies. There was no significant change in Lushi—Luanchuan area where restricted carbonate platform was developed. In  other areas, beach facies and neritic facies were deposited. The transgression continued from the Early Jixianian to the Middle Jixianian.