Recovery and Preliminary Analysis of Laminated Lacustrine Sediments from Laguna Paron, Cordillera Blanca, Peru

该奖项支持一项用于探索研究（SGER）的小额赠款，以检查秘鲁拉古纳帕隆层状沉积物的暴露情况。这一沉积物剖面可能提供了一个独特的机会来开发安第斯山脉中部的高分辨率古气候记录，这将补充该地区的冰芯记录。沉积物沉积于前冰期三角洲环境。木材的初步放射性碳年代测定表明，这些沉积物是在小冰期沉积的。预计沉积物将记录冰川融化和径流，而冰芯主要记录冰川堆积，因此串联记录将提供完整的古气候季节信号。由于1985年人为降低的湖泊水位正在再次上升，这些暴露物现在有消失的危险。湖面最初的下降导致三角洲的下降，这些部分首次暴露在地面上。

This award supports a Small Grant for Exploratory Research (SGER) to examine exposures of laminated sediments in Laguna Paron, Peru. This sediment section may provide a unique opportunity to develop a high-resolution paleoclimate record from the central Andes that will compliment the ice-core record from the region. The sediments were deposited in a proglacial delta environment. Initial radiocarbon dates of wood indicate the sediments were deposited during the Little Ice Age. It is anticipated that the sediments will record glacial melt and runoff, whereas the ice cores primarily record glacial accumulation, thus the records in tandem will give a complete seasonal signal of paleoclimate. The exposures are now at risk of being lost because the lake level, which was artificially lowered in 1985, is being raised again. The initial lowering of the lake level produced downcutting in the delta and the first subaerial exposure of these sections.