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本文在详细分析沉积韵律、沉积构造、成分及粒度的基础上，论证了四川省若尔盖县阿西乡牙相一带上三叠统卡车组一套浊积岩沉积。通过对牙相浊积岩序列的２３个采自各浊积旋回各层段的系列样品的金分析，发现这一浊积岩序列具有：以泥质粉砂岩、泥质岩为主的鲍玛序列的Ｄ—Ｅ段与其上旋回的以含砾砂岩、粗砂岩为特征的Ａ段含金量呈线性关系，表明这两段之间元Ａｕ元素发生了循环，进一步揭示了浊积岩具有金的可迁移性这一矿源层的重要特征。另外，砂质单元金含量比细粒的粉砂岩和泥岩要高，从浊积岩序列的底部旋回至上部回金的含量降低并由不稳定到稳定等规律。这预示了西秦岭三叠纪海盆中陆源金的重要性。
Based on the detailed analysis of sedimentary rhythm, sedimentary structure, composition and grain size, a set of turbidite sediments of the Triassic Trucks in the area of the tooth belt of Ass’xi County, Zoige County, Sichuan Province are demonstrated. The gold analysis of a series of 23 samples taken from each turbidite cycle of the turbidite sequence shows that this turbidite sequence has the following characteristics: muddy siltstone and argillaceous The D-E segment of the sequence is linearly related to the gold content of the A segment characterized by gravelly sandstone and coarse sandstone above it, indicating that the Au element circulates between these two segments, further revealing that the turbidite has gold Migration is an important feature of the source layer. In addition, the gold content of sandy units is higher than that of siltstone and mudstone of fine-grained sediments, and the content of gold from the bottom of turbidite sequence to the upper part decreases and is unstable and stable. This indicates the importance of terrigenous gold in the Triassic sea basin of the Western Qinling.