The composition, structure, and formation features of the exogenous anomalous geochemical fields (AGCFs) identified through stream sediments (SSs) are considered here within the Pestrinsk silver-bearing system and the Goltsovy silver-polymetallic deposit. The research was performed in the southern part of the Balygychan-Sugoy trough (northeastern Russia). The exogenous AGCFs of the main indicator elements of ores, formed in cryolithogenesis zone conditions, were studied. We used the results of multi-scale areal geochemical surveys of SSs. A survey of SSs at 1:200,000 scale was found to be effective at the stage of regional forecasting. Indeed, it is characterized by simplicity and the possibility of obtaining information operatively regarding the metallogeny of the area. It was found that at the local forecast stage, when prospecting for mineralization, the most effective was a survey of SSs at 1:50,000 scale. The AGCFs identified during this survey were distinguished by a richer component composition, higher contrast, and closer relationship with ores. During the lithochemical sampling of the watercourse heads, where alluvial sediments were found to be almost completely absent, a positive result was obtained by the bryolithochemical method, which is based on moss sampling together with a fine fraction of alluvium held by a moss cushion. The method enabled the sampling of watercourse heads and thus yielded information about the presence or absence of anomalous concentration fields of ore elements.

中文翻译：

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佩斯特林斯克含银系统的河流沉积物（俄罗斯东北部）

在佩斯特林斯克含银系统和Goltsovy银多金属矿床中考虑了通过河流沉积物（SS）识别的外源异常地球化学场（AGCF）的组成，结构和形成特征。该研究是在Balygychan-Sugoy槽（俄罗斯东北部）的南部进行的。研究了在岩溶作用区条件下形成的矿石主要指示元素的外源AGCF。我们使用了SS的多尺度区域地球化学调查的结果。在区域预测阶段，以1：200,000的比例对SS进行调查是有效的。实际上，它的特点是简单易行，并且有可能获得有关该地区成矿作用的信息。发现在当地预报阶段，在探矿时，最有效的方法是按1：50,000比例对SS进行调查。在这次调查中确定的AGCF的特征是成分更丰富，对比度更高，与矿石的关系更紧密。在发现几乎完全没有冲积物的河道水头的石化采样过程中，通过冰石化方法获得了积极的结果，该方法基于苔藓采样以及由苔藓垫子保持的细小冲积层。该方法可以对河道水头进行采样，从而获得有关矿石元素存在或不存在异常浓度场的信息。对比度更高，与矿石的关系更紧密。在发现几乎完全没有冲积物的河道水头的石化采样过程中，通过冰石化方法获得了积极的结果，该方法基于苔藓采样以及由苔藓垫子保持的细小冲积层。该方法可以对河道水头进行采样，从而获得有关矿石元素存在或不存在异常浓度场的信息。对比度更高，与矿石的关系更紧密。在发现几乎完全没有冲积物的河道水头的石化采样过程中，通过冰石化方法获得了积极的结果，该方法基于苔藓采样以及由苔藓垫子保持的细小冲积层。该方法可以对河道水头进行采样，从而获得有关矿石元素存在或不存在异常浓度场的信息。