平邑盆地古近纪官庄群沉积建造与膏岩富集规律  

Sedimentary Foundation and Plaster Rock Concentration Rules of Paleogene Guanzhuang Group in Pingyi Basin

作　　者：陈华国[1] 赵艳杰[1] 甘延景[1] 安仰生[1] 

机构地区：[1]山东省鲁南地质工程勘察院,山东兖州272100

出　　处：《山东国土资源》2008年第5期30-32,36,共4页Shandong Land and Resources

摘　　要：平邑盆地是蒙山断裂多期次活动的产物,盆地内沉积了厚约1700多米的新生代古近纪官庄群杂色—红色碎屑岩建造。将官庄群沉积建造、剖面类型,结合含膏岩系的沉积特点,可以划分为3个不同级别的沉积韵律,它们分别反映出含膏岩系在时间和空间上的变化趋势。蒙山断裂及盆地内次级断裂的阶段性活动,使盆地表现为升降运动,下降时成矿物质聚集、保存,相对稳定期是膏岩形成的有利期。Pingyi basin is the product of multi - phase activities of Mengshan fault. The thickness of varicolored - red fragementals in Cenezoic Paleogene Guanzhuang group is 1700m. According to sedimentary foundation, profile types and sedimentary characteristics of gypsum - bearing strata, 3 degree of sedimentary rules can be divided, which respectively reflects variation trend of gypsum - bearing rocks in time and space. The initial activities of Mengshan fault and sub -fault made the basins show as elevation and subsidence, and ore -forming materials were formed and reserved when the was subsidence＆ A relatively stable period was the favorable period for ore -forming.

关 键 词：沉积建造 沉积韵律 石膏矿床 富集规律 平邑盆地 

分 类 号：P611.22[天文地球—矿床学] P619.261[天文地球—地质学]