Abstract 25 samples had been divided from the estuary of Huanghe, the abandoned Huanghe River, and the Changjiang River into multiple grain sizes in intervals of 0.5 Φ for heavy mineral analysis, which is a multiple-window grain size strategy. Each sample was divided into 6–9 subsamples for a total of 191 subsamples. The results show that the characteristics of the heavy minerals and the relative contents of all sediments are different in the different grain-size fractions. The multiple heavy mineral indexes of the sediments of the Huanghe River and Changjiang River estuaries are different according to the multi-grain analysis. The amphibole group content (37.7%) in the Huanghe River is lower, whereas stable minerals (14.4%) and Fe-metallic minerals (23.8%) are higher than that in the Changjiang River. The Changjiang River is marked by a high content of amphibole (54.9%). However, its stable minerals (6.5%) and Fe-metallic minerals (14.1%) are lower than in the Huanghe River, garnets (1.7%) are lower than sphene (3.0%) in the Changjiang River. In this study, the multigrain contents of major detrital heavy minerals in silty sediments in the Huanghe River estuary and the Changjiang River estuary were compared, and the intervals of the mineral contrast values do not overlap. The ratio of the epidote group to the stable minerals is around 0.86–1.70 in the Huanghe River and 1.80–4.45 in the Changjiang River; the ratio of garnet to sphene is around 1.23–2.59 in the Huanghe River and 0.33–0.99 in the Changjiang River. The above characteristics can be used for identification of the origin of the sediments of the two rivers. The multiple-window grain size strategy better reflects the overall characteristics of the sample, providing a more reliable end-member indicator for the differentiation of Huanghe and Changjiang River sediments.

中文翻译：

---

基于多窗口粒度策略的黄河与长江沉积物重矿物特征对比分析

摘要 将黄河河口、废弃黄河、长江25个样品以0.5Φ为间隔分成多个粒度进行重矿物分析，这是一种多窗口粒度策略。每个样本分为 6-9 个子样本，共 191 个子样本。结果表明，重矿物的特征和所有沉积物的相对含量在不同粒度级分中是不同的。黄河和长江口沉积物的多重重矿物指标根据多粒分析不同。黄河角闪石族含量（37.7%）较低，稳定矿物（14.4%）和铁金属矿物（23.8%）高于长江。长江以闪石含量高（54.9%）为标志。但其稳定矿物（6.5%）和铁金属矿物（14.1%）均低于黄河，石榴石（1.7%）低于长江中的钆（3.0%）。本研究比较了黄河口与长江口粉质沉积物中主要碎屑重矿物杂粒含量，矿物对比值区间不重叠。绿帘石族与稳定矿物的比例在黄河约为0.86-1.70，在长江约为1.80-4.45；黄河石榴石与钬的比例约为1.23-2.59，长江为0.33-0.99。上述特征可用于鉴别两条河流沉积物的来源。