根据甘肃公婆泉铜矿田内４条典型地层剖面，确立了甘肃公婆泉群中－上志留统浅海相火山喷发沉积岩系的标准层和层序，并将其划分为１４个韵律和５个旋回。火山喷发旋回由早→晚，火山岩岩性由安山质凝灰岩、安山岩→英安岩、钠流纹岩→石英粗面岩→安山岩，火山岩中铁族元素的丰度由高→低→最低（在石英粗面岩中）→高，形成一个较完整的演化周期。中晚期火山岩所表现出的岩性（出现碱性岩－石英粗面岩）和铁族元素丰度（出现最低值）的突变与区域北西走向断裂的深切活动有关，为铜、银等金属成矿提供主要的地球化学条件。铜、银等成矿元素主要富集在火山喷发旋回中期的英安岩中，表明火山活动中期是主要的成矿期，英安岩可作为重要的找矿标志。此外，早中期火山旋回主要发育于矿田的中西部，而晚期旋回则主要分布在矿田的东部，并且火山喷发的强度和频率增高，表明晚期火山活动中心已明显向东部迁移，因此矿田的东部仍有较大的找矿潜力 According to four typical stratigraphic profiles of Gongpoquan copper mine in Gansu Province, the standard stratigraphy and sequence of the middle-upper Silurian volcanic eruption in Gongpo Quanqun Group were established and divided into 14 rhythms and 5 cycles . Volcanic eruption cycles from early → late volcanic rocks consist of andesitic tuff, andesite → dacite, sodium rhyolite → quartz mafic → andesite, and the abundances of the iron elements in the volcanic rocks range from high → low → lowest Quartz mafic rocks) → high, forming a more complete evolutionary cycle. The abrupt changes of lithology (alkaline rocks - quartz trachyte) and iron isotope abundances (lowest values) in middle and late volcanic rocks are related to the deep activity of the NW trending faults in the Middle and Late Periods and are composed of metals such as copper and silver The mine provides the main geochemical conditions. The ore-forming elements such as copper and silver are mainly enriched in the mid-volcanic eruption volcanic eclogites, indicating that the mid-term volcanic activity is the major mineralization period, and dacite can be used as an important prospecting indicator. In addition, early-mid-term volcanic cycles were mainly developed in the central and western parts of the ore field, while late cycles were mainly distributed in the eastern part of the ore field. The intensity and frequency of volcanic eruptions increased, indicating that late volcanic activity centers have migrated to the east obviously. The eastern part still has a larger prospecting potential