Testing imaging confocal microscopy, laser scanning confocal microscopy, and focus variation microscopy for microscale measurement of edge cross-sections and calculation of edge curvature on stone tools: Preliminary results
Testing imaging confocal microscopy, laser scanning confocal microscopy, and focus variation microscopy for microscale measurement of edge cross-sections and calculation of edge curvature on stone tools: Preliminary results
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DOI：
10.1016/j.jasrep.2019.02.010
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发表时间：
2019-04-01
影响因子：
1.6
通讯作者：
Gleason, Matthew A.
中科院分区：
文献类型：
--
作者：
Stemp, W. James;Macdonald, Danielle A.;Gleason, Matthew A.
从工程和材料科学中采用的微米和纳米技术的应用，在研究石材工具表面方面证明是有价值的。用于表面表征的测量系统已经与允许石材工具表面的数学表征的参数相结合。在这个项目中，Seniolis S neox成像共聚焦显微镜（ICM）/焦点变化显微镜（FVM）和奥林巴斯LEXT OLS 4100激光扫描共聚焦显微镜（LSCM）被用来从数学上记录由玄武岩，燧石，黑曜石和石英制成的五个切割石器的边缘横截面。基于边缘截面的表面文档，测试了一种用于计算多尺度边缘曲率的新算法。结果表明，共焦系统遇到困难，记录边缘横截面。然而，焦点变化显微镜可以在数学上记录由玄武岩和燧石制成的石器的边缘横截面，从而允许在多个测量尺度上计算边缘曲率。微尺度文件的边缘横截面和边缘曲率的计算将有助于理解工具边缘，边缘锋利度，边缘磨损和微磨损之间的关系。这三种测量系统（ICM，LSCM，FVM）之间的比较提供了必要的信息，为进一步的方法开发在边缘横截面测量和潜在的生成更强大的边缘分析协议。
The application of micro- and nanotechnology, adopted from engineering and materials sciences, is proving valuable in studying stone tool surfaces. Measurement systems for surface characterization have been coupled with parameters that allow for the mathematical characterization of stone tool surfaces. For this project, a Sensofar S neox imaging confocal microscope (ICM)/focus variation microscope (FVM) and an Olympus LEXT OLS4100 laser scanning confocal microscope (LSCM) are used to mathematically document the edge cross-sections on five chipped stone tools made from basalt, chert, obsidian, and quartz. Based on the surface documentation of edge cross-sections, a new algorithm for the calculation of edge curvature at multiple scales is tested. Results indicate the confocal systems experience difficulty documenting edge cross-sections. However, focus variation microscopy can mathematically document edge cross-sections on stone tools made from basalt and chert, thus permitting the calculation of edge curvature over multiple scales of measurement. Microscale documentation of edge cross-sections and calculation of edge curvature will be helpful in understanding the relationships between tool edges, edge sharpness, edge attrition, and microwear. Comparisons between these three measurement systems (ICM, LSCM, FVM) provide information necessary for further method development in edge cross-section measurement and the potential to generate more robust edge analysis protocols.