Fission Track Data and Ages of Apatite and U-Pb Isotopic Data and Ages of Igneous and Detrital Zircon from Selected Rocks from the Lake Clark and Lake Iliamna Region of South-Central Alaska

This data set contains fission track data and associated ages of apatite from igneous and sedimentary rocks, U-Pb isotopic data and associated ages of zircon from a subset of the igneous rock samples, and U-Pb isotopic data and associated ages of detrital zircon from a subset of the sedimentary rock samples. All samples were collected from the region surrounding Lake Clark and Lake Iliamna in southwestern Alaska. All samples were collected as part of geological mapping and research conducted in 2008 and funded by the U.S. Geological Survey Mineral Resources External Research Program. Apatite and zircon grains were separated and analyzed by Apatite to Zircon, Inc. (A2Z). All analyses were conducted in 2009 using standard fission track dating techniques and laser-ablation-inductively-coupled-plasma-mass spectrometry (LA-ICP-MS) techniques.

本数据集涵盖火成岩与沉积岩样品中磷灰石的裂变径迹数据及其对应年龄、部分火成岩样品中锆石的铀-铅（U-Pb）同位素数据及其对应年龄，以及部分沉积岩样品中碎屑锆石的铀-铅同位素数据及其对应年龄。所有样品采集自阿拉斯加州西南部克拉克湖（Lake Clark）与伊利亚姆纳湖（Lake Iliamna）周边区域。所有样品采集工作均为2008年开展的地质填图与相关研究的一部分，资助方为美国地质调查局（U.S. Geological Survey）矿产资源外部研究计划。磷灰石与锆石颗粒均由磷灰石至锆石公司（Apatite to Zircon, Inc.，简称A2Z）完成分离与分析工作。所有分析工作均于2009年开展，采用标准裂变径迹定年技术与激光剥蚀-电感耦合等离子体质谱（LA-ICP-MS）技术。