Phololuminescence Studies of Modern & Pleistocene Lacustrineand Near-shore Marine Sediments from Spitsbergen: A Potential New Geochronometer for Arctic Waterlain Sedime

现代光致发光研究

• 批准号: 9121944
• 负责人: Steven Forman
• 金额: $ 13.27万
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-07-15 至 1996-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9121944&HistoricalAwards=false
• 关键词: Phololuminescence; Studies; Modern; & Pleistocene

There is a clear need for the development of a dating technique that can provide reliable chronologic control for sediments deposited in polar marine and lacustrine environments during the late and middle Quaternary. This award supports a series of fundamental investigations to ascertain the utility of the emerging photoluminescence (PL) technique to date waterlain sediments. The energy selective analysis of PL potentially could supply a widely applicable and accurate geochronometer. Specifically, these experiments will test the accuracy and precision of the PL technique to date lacustrine and near-shore marine sediments from Spitsbergen, Svalbard. The sediments chosen for study are either modern or radiocarbon dated sediments from exposures or cores that were deposited during the last ca. 12 thousand years. These sediments are from a variety of aqueous sedimentary environments and the proposed research should provide coherent results to evaluate the promises and limitations of the PL technique. This project represents one element of the PALE (Paleoclimates form Arctic Lakes and Estuaries) activity.

显然需要发展一种测年技术，为第四纪晚期和中期极地海洋和湖泊环境中沉积的沉积物提供可靠的年代控制。该奖项支持一系列基础研究，以确定新兴的光致发光（PL）技术对水沉积物年代的实用性。PL的能量选择分析有可能提供一种广泛应用和精确的地球时计。具体来说，这些实验将测试PL技术对斯瓦尔巴群岛斯匹次卑尔根湖和近岸海洋沉积物进行测年的准确性和精密度。选择用于研究的沉积物要么是现代的，要么是放射性碳定年的沉积物，这些沉积物来自于过去大约1.2万年沉积的暴露物或岩心。这些沉积物来自各种含水沉积环境，拟议的研究应该提供一致的结果来评估PL技术的前景和局限性。该项目代表了PALE（来自北极湖泊和河口的古气候）活动的一个元素。