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胶莱盆地属于晚中生代断陷盆地，东北缘广泛出露中生界的粗碎屑岩系。在对其进行详细的野外宏观描述、室内微观鉴定及样品含金量测试的基础上，研究了粗碎屑岩段的沉积物组成、沉积类型和微观特征，建立了该岩段在不同地区的垂向沉积层序及典型展序组合类型。不同的水动力条件是造成砾岩层内部结构复杂性变化的主要原因。通过与国内外有关资料的对比分析，指出研究区粗碎屑岩段形成于干旱、近源快速堆积的陆上冲积扇环境，且探讨了其含金性。
Jiaolai Basin is a Late Mesozoic rift basin, northeast margin of the Mesozoic widely exposed coarse clastic rock series. Based on the detailed field description, indoor micro-identification and gold content testing, the sedimentary composition, sedimentary types and microscopic features of the coarse clastic rock sections are studied. The vertical sections of the rock sections in different areas Sedimentary sequence and typical sequence combination type. Different hydrodynamic conditions are the main reasons for the complexity of the internal structure of conglomerate. Through the comparison with the relevant data at home and abroad, it is pointed out that the coarse clastic rocks in the study area formed in the alluvial fan environment of rapid accumulation of arid and near-source and discussed the gold content.