U-Pb Isotopic Data and Ages of Detrital Zircon Grains and Graptolite Fossil Data from Selected Rocks from the Western Alaska Range, Livengood area, and Seward Peninsula, Alaska

This data set contains two data sets. One data set is of U-Pb isotopic data and associated ages of detrital zircon grains from 16 sedimentary and metasedimentary rocks from the western Alaska Range, Livengood area and Seward Peninsula, Alaska. Two samples were collected from the York Mountains area of the Seward Peninsula of western Alaska. Three samples were collected from the Livengood quadrangle of central Alaska. Eleven samples were collected from the western Alaska Range of south-central Alaska. Detrital zircon grains from each of the sixteen samples were separated and analyzed by Apatite to Zircon, Inc. (A2Z) and Geosep Services (GSS) laboratories between 2011 and 2014, using laser-ablation-inductively-coupled-plasma-mass spectrometry (LA-ICP-MS) techniques.
The second data set contains fossil identifications and age assignments from a select sedimentary rock from the western Alaska Range of south-central Alaska. Fossils were identified by visual inspection.
All samples were collected as part of geological mapping research conducted between 1984 and 2014 and funded by the Mineral Resources Program of the U.S. Geological Survey.

本数据集包含两套子数据。第一套数据为取自阿拉斯加州阿拉斯加山脉西部、利文古德地区与苏厄德半岛的16件沉积岩及变质沉积岩样品的碎屑锆石铀-铅（U-Pb）同位素数据及其伴生年龄。其中，从阿拉斯加西部苏厄德半岛的约克山脉地区采集了2件样品；从阿拉斯加中部的利文古德图幅采集了3件样品；从阿拉斯加中南部的阿拉斯加山脉西部采集了11件样品。2011年至2014年间，磷灰石至锆石公司（Apatite to Zircon, Inc., A2Z）与Geosep服务公司（Geosep Services, GSS）两家实验室采用激光剥蚀-电感耦合等离子体质谱法（LA-ICP-MS）技术，对这16件样品中的碎屑锆石颗粒完成了分选与分析。
第二套数据包含取自阿拉斯加中南部阿拉斯加山脉西部的一件选定沉积岩的化石鉴定结果与年代归属，所有化石均通过目视检查完成鉴定。
所有样品均为1984年至2014年间开展的地质填图研究的采集样本，该研究由美国地质调查局（U.S. Geological Survey）矿产资源计划资助。