为探讨兰坪盆地内白秧坪银铜多金属矿集区水-岩反应的可能性，对矿集区的热液矿物、蚀变岩石和原岩的碳、氧同位素组成进行了分析。分析结果显示，热液成矿阶段形成的方解石、菱铁矿、菱锶矿的δ13CPDB值为-8.3‰～+2.7‰，相对变化较小；而δ18OSMOW值为-2.5‰～+24.3‰，变化较大，且出现了自然界中少见的极低值(±0‰)。水岩交换模拟反应显示，在成矿早阶段，成矿流体的δ13C和δ18O值分别为-7‰和+7‰，与岩浆水组成特征相似，它是一种具有深源CO2的热卤水。在此流体中，可溶性碳以HCO3-为主，方解石等热液矿物的形成温度为300～160℃，水岩交换比值较小(0～0.4)。在成矿晚阶段，成矿流体的δ13C和δ18O值分别为-2.5‰和-12.5‰，可溶性碳以 H2CO3 为主，方解石等形成温度为250～150℃，水岩交换比值稍大(0.2～0.6)，显示出晚阶段成矿流体具有大气降水的特征。 δ13C值的增加，很可能与降温作用和灰岩的溶解或去碳酸盐化作用有关。

对新疆西南天山萨瓦亚尔顿金矿床成矿主阶段的石英样品进行了40Ar-39Ar快中子活化测定,谱线特征为马鞍型,其坪年龄为210.59Ma±0.99Ma,最小视年龄为208.07Ma±1.22Ma,等时线年龄为207.14Ma±1.92Ma,三者均十分接近,说明所测石英样品的年龄真实可靠。坪年龄代表了含金石英脉的形成时代--相当于印支晚期。结合西南天山大区域内金、铜及其他矿种的成矿部分集中在印支期这一现象,认为西南天山在印支期一定存在着某种缺其不可的成矿作用的关键因素,在区域内统一制约着矿床的形成。

The Sawaya'erdun gold deposit in the western segment of the South Tianshan, Xinjiang, China, is a large, low-grade orogenic gold deposit. An abundance of index fossils in the ore-hosting strata, including brachiopoda, corals and Schwagerina, show that the fossil age of the country rocks ranges from Late Carboniferous to Early Permian. Whole rock Rb–Sr and Sm–Nd isochron ages, ranging from 292.43±0.38 to 304.7±11.6 Ma, are concordant with a Late Carboniferous age. Gold mineralization is strictly controlled by a fault zone. Ore minerals are dominated by sulfides, with gold inhomogeneously distributed within them; gangue minerals are quartz, siderite or calcite. Data suggest that the ore-forming fluid was derived predominantly from an active meteoric groundwater system. Ore-forming temperatures are estimated to have been within the range 110 to 220 °C. New 40Ar/39Ar isotope age determinations of auriferous quartz are in excellent agreement with Rb–Sr ages obtained from fluid inclusions in quartz. They suggest gold mineralization at 206 to 213 Ma (Late Indosinian). Such an age is consistent with the age of formation given for other gold deposits in the region, such as Bulong and Dashankou. Combined with K–Ar geochronological data and observed geological features, it is concluded that the Indosinian metallogentic epoch represents a previously unrecognized, major period of gold metallogeny in the southwestern Chinese Tianshan. In some ways, the Sawaya'erdun gold deposit can be compared with the Muruntau gold deposit in Uzbekistan with respect to geological setting, host lithology, mineralization style, mineral assemblages, geochemical association and metallogenic processes involved. Despite this, the Sawaya'erdun gold deposit possesses a number of characteristics typical of only low-temperature metallogenesis.

西秦岭降扎地区寒武系中的层控金矿床，产于由碳质硅岩和碳质板岩组成的硅岩建造中。研究表明，无论是围岩还是金矿石，均普遍含有较高的硒，达到工业综合利用的要求，在局部地段甚至可以圈出独立的硒矿体。在金矿石中，硒主要呈独立矿物和以类质同象形式存在于硫化物中，且硒与金呈密切的正相关关系。尤为重要的是，在金矿石中常常见到自然金与一些硒矿物紧密共生，说明 Au, Se可能以Au-S-Se或Au-Se络合物形式进行迁移。由于沸腾的成矿流体与下渗的富氧冷水混合而发生氧化还原作用，导致了Au 和Se的共同富集成矿。

西秦岭南亚带层控金-硒矿床的赋矿地层为太阳顶群，为一套主要由炭质硅岩和炭质板岩组成的硅岩建造。对于太阳顶群的时代 ,至今仍众说纷纭，莫衷一是 ，大多数人认为属晚寒武世 —奥陶纪，也有认为属晚震旦 —早寒武世。作者通过对古杯类化石的鉴定以及 Rb-Sr、 Sm-Nd同位素等时线年龄测定后认为 ，赋矿的太阳顶群时代应属早寒武世 ,而非晚寒武世 —奥陶纪，更不可能为晚震旦世。对金-硒矿床中2个成矿阶段石英样品进行40Ar/39Ar 快中子活化测定后获得马鞍型谱线特征。其中坪年龄(71. 45± 0.55)～(80.05± 0.65)Ma、最小视年龄(70.24 ±1.93)～(78.59 ±2.85)Ma 和等时线年龄(69.45± 0.38)～(81.61 ± 0.55)Ma均十分接近 ,说明所测2件石英样品的40Ar/39Ar 年龄真实可靠，表明太阳顶群中层控金-硒矿床的成矿时间主要发生于燕山运动晚期。