Lake Titicaca: Toward a Detailed Record of Late Quaternary Climate in Subtropical South America

杜克大学的标题：的的喀喀湖：南美洲亚热带第四纪气候的详细记录该奖项支持一项试点研究，该研究有两个操作目标：(1)对秘鲁/玻利维亚的的的的喀喀湖进行高分辨率调查；(2)从大而深的湖泊盆地中恢复几个短（3米）的活塞岩芯。这些岩心预计跨越整个全新世和最新更新世。对岩心的分析将仅限于初步调查，包括利用放射性碳测年、沉积学、整体化学、稳定同位素地球化学以及硅藻和花粉的组成来确定堆积速率。这项研究将确定长岩芯的最佳位置，并开始解决有关全新世和最新更新世期间亚热带南美洲气候记录的许多重要问题。的的喀喀湖是南美洲最重要的气候档案之一。这些岩心的恢复和初步分析将提供独特的、校准良好的古气候记录，具有广泛的意义。

Abstract ATM-9527418 Baker, Paul A. Duke University Title: Lake Titicaca: Toward a Detailed Record of the Quaternary Climate in Subtropical South America This award supports a pilot study that has two operational objectives: (1.) to undertake a high-resolution survey of Lake Titicaca, Peru/Bolivia and (2.) to recover several short (3 meters) piston cores from the large, deep basin of the lake. These cores are expected to span the entire Holocene and latest Pleistocene. Analysis of the cores will be limited to a preliminary survey, including determination of accumulation rates using radiocarbon dating, sedimentology, bulk chemistry, stable isotopic geochemistry, and composition of diatoms and pollen. This study will determine the best sites for location of the long cores and begin to address the many important questions about the climatic record of subtropical South America during the Holocene and latest Pleistocene. Lake Titicaca is one of the most important climatic archives in South America. The recovery and preliminary analysis of the proposed cores will provide unique, well-calibrated paleoclimatic records of wide-spread significance.