Summer Lake Pliocene Tephra Dataset

<p>This dataset describes a fault-uplifted&nbsp;sequence of 11 tephra layers preserved in ~3 Ma, fossiliferous lacustrine sediments and 3 tephra in adjacent late Pleistocene lacustrine sediments and Holocene dune sand at Summer Lake, Oregon, USA. It includes tephra and host&nbsp;sediment stratigraphy, sample information, tephra layer thicknesses, tephra grain size data, volcanic glass geochemistry, SEM imagery, method information,&nbsp;and suggested tephra correlations.</p> <p>Most of this information is contained in a series of spreadsheets that follow <a href="https://zenodo.org/record/4075613#.X5mcdi9h1aU">tephra community recommended best practices</a>.&nbsp;</p> <p>The listed files below follow the naming convention and format of Abbott et al. (2020) version 2.0, and they serve as worked examples of that format. See&nbsp;DOI:&nbsp;<a href="https://doi.org/10.5281/zenodo.3866266">10.5281/zenodo.3866266</a>&nbsp;for more information.</p> <ul> <li>Summer Lake Collection3b.xlsx (location information, sample information, stratigraphy)</li> <li>Summer Lake Sample_Processing2.xlsx (sample preparation)</li> <li>Summer Lake Physical_analysis2.xlsx (maximum grain size data, pumice class density)</li> <li>Summer Lake Physical_Microanalysis3.xlsx (polarizing microscope images, SEM-EDS images, sample mount images)</li> <li>Summer Lake Geochemical_Analysis 3.xlsx (EPMA method details)</li> </ul> <p>Glass geochemistry by EPMA may be found in the following file:</p> <ul> <li>Summer Lake Glass DATA.xlsx</li> </ul> <p>SEM and other images may be found in the following file:</p> <ul> <li>Summer Lake EPMA Images.zip</li> </ul> <p>Additional geological field data and field photographs may be found in the <a href="https://strabospot.org">StraboSpot repository</a>.</p>