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Dispersion of gold in stream sediments in the Sungai Kuli region, Sabah, Malaysia

机译:马来西亚沙巴双溪古里地区河流沉积物中金的扩散

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摘要

The distribution of Au in a Au-rich tributary of the Sungai Kuamut, Sabah, Malaysia, was studied initially by the authors in 1999 prior to disturbance of the tropical rain forest by logging. That study found: (i) a strong but extremely erratic Au anomaly with median values of 230 to 690 ppb in the fine and medium sand sized fractions from both cobble and gravel sites; and (ii) Au values typically <15 ppb in the –53 µm fraction. It was suggested that increased input of fine sediment into the stream after logging might substantially dilute and modify the Au anomaly. Logging of the drainage basin in 2000–2001 provided an opportunity to test this possibility.
机译:作者 于1999年首先研究了马来西亚沙巴州Sungai Kuamut的富金支流中Au的分布,然后受到热带雨林的干扰。 记录。该研究发现:(i)强烈但极不稳定的 Au异常,卵石和砾石中的细颗粒 和中等粒度的部分中值介于230至690 ppb之间sup> 站点; (ii)在–53 µm分数中,Au值通常<15 ppb。有人提出,在测井后增加 细颗粒沉积物到河流中可能会大大 稀释和改变金的异常。在2000–2001年对流域 进行的测井为检验这种可能性提供了机会。

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