This report focuses on the morphometric and elemental analysis of glass beads collected from an adobe structure (CA-SCR-217H-T) at Mission Santa Cruz, which operated between 1791 and the 1830s in the colonial province of Alta (upper) California. Previous chemical research established a chronological framework for opacified beads collected from sites in Canada, the Great Lakes region, and the southeastern United States. Testing the viability of this chronological framework for California, we analyzed 100 white glass beads using a conventional typology and laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS)—the first application of LA-ICP-MS to a California mission. We present the results of the LA-ICP-MS study and then briefly comment on the potential for LA-ICP-MS to refine chronologies associated with colonial missions and other postcontact sites.

本报告重点介绍了从圣克鲁斯任务的Adobe结构（CA-SCR-217H-T）收集的玻璃珠的形态学和元素分析，该组织在1791年至1830年代在加利福尼亚州阿尔塔（上）的殖民省开展业务。先前的化学研究为从加拿大，大湖区和美国东南部的站点收集的不透明珠粒建立了时间顺序框架。为了测试这种按时间顺序排列的框架在加利福尼亚州的可行性，我们使用常规类型学和激光烧蚀-电感耦合等离子体质谱法（LA-ICP-MS）分析了100个白色玻璃珠，这是LA-ICP-MS在加利福尼亚州的首次应用使命。