Abstract We present a high-resolution peat paleodust record (peat accumulation rate (PAR), mineralogy and elemental content) spanning the last 8300 years from Draftinge Mosse (400 ha), southern Sweden (57°06′27.6”N 13°42′54.1″E). Five periods of increased mineral deposition were recorded, the first event occurred between ~6280 and ~5570 cal BP, during the fen to bog transition. This is followed by four atmospheric mineral dust events (DEs) which are recorded in the ombrotrophic section of the sequence: ~2200 BP; ~1385–1150 BP; ~830–590 BP, and from ~420 BP to the present. Statistical analysis and elemental ratios indicated that both the mineralogy and grain size shifted when the system transitioned from fen into bog. This suggests a transition from mainly fluvial transport in the fen to aeolian in the bog, highlighting the importance of identifying peatland stages and their impact on peat paleodust studies. Following all four DEs, increases in the PAR were observed, suggesting a coupling to dust deposition. Comparison of DEs and PAR with a paleodust record from Store Mosse, a 20 times larger bog located ca 18 km away (Kylander et al. 2016), showed that both PAR and dust deposition are largely represented by single-core reconstructions, indicating that they are caused by a common forcing mechanism. However, higher PAR and dust deposition rates were observed in the more moderately sized Draftinge Mosse compared to the extensive Store Mosse, suggesting that the size of the bog is important to consider in peat paleodust studies. Furthermore, the smaller bog responded more rapidly to hydrological changes, indicating that the size of the bog affects the buffering capacity. Authigenic carbonates, here observed during episodes of rapid peat growth, coincide with changes in REE ratios, indicating that authigenic peat processes potentially cause REE fractionation.

中文翻译：

---

古尘沉积和泥炭堆积率——沼泽大小很重要

摘要 我们展示了过去 8300 年的高分辨率泥炭古尘记录（泥炭积累率 (PAR)、矿物学和元素含量），从瑞典南部的 Draftinge Mosse（400 公顷）（57°06′27.6”N 13°42′ 54.1“E）。记录了矿物沉积增加的五个时期，第一次事件发生在约 6280 和约 5570 cal BP 之间，在沼泽过渡期间。接下来是四个大气矿物尘埃事件 (DE)，它们记录在序列的 ombrotrophic 部分：~2200 BP；~1385–1150 BP；~830–590 BP，从 ~420 BP 到现在。统计分析和元素比表明，当系统从沼泽过渡到沼泽时，矿物学和晶粒尺寸都发生了变化。这表明从沼泽中的主要河流运输过渡到沼泽中的风成，强调确定泥炭地阶段的重要性及其对泥炭古尘研究的影响。在所有四个 DE 之后，观察到 PAR 的增加，表明与灰尘沉积的耦合。DEs 和 PAR 与 Store Mosse 的古尘记录的比较，Store Mosse 是一个 20 倍大的沼泽，位于约 18 公里外（Kylander 等人，2016 年），表明 PAR 和尘埃沉积主要由单核重建表示，表明它们是由共同的强制机制引起的。然而，与广泛的 Store Mosse 相比，在中等大小的 Draftinge Mosse 中观察到更高的 PAR 和灰尘沉积率，这表明沼泽的大小在泥炭古尘研究中很重要。此外，较小的沼泽对水文变化的反应更快，表明沼泽的大小会影响缓冲能力。在泥炭快速生长期间观察到的自生碳酸盐与 REE 比率的变化一致，表明自生泥炭过程可能导致 REE 分馏。