Summer Lake Pliocene Tephra Dataset

This dataset describes a fault-uplifted 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 sediment stratigraphy, sample information, tephra layer thicknesses, tephra grain size data, volcanic glass geochemistry, SEM imagery, method information, and suggested tephra correlations.

Most of this information is contained in a series of spreadsheets that follow tephra community recommended best practices. 

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 DOI: 10.5281/zenodo.3866266 for more information.

Summer Lake Collection3b.xlsx (location information, sample information, stratigraphy)

Summer Lake Sample_Processing2.xlsx (sample preparation)

Summer Lake Physical_analysis2.xlsx (maximum grain size data, pumice class density)

Summer Lake Physical_Microanalysis3.xlsx (polarizing microscope images, SEM-EDS images, sample mount images)

Summer Lake Geochemical_Analysis 3.xlsx (EPMA method details)

Glass geochemistry by EPMA may be found in the following file:

Summer Lake Glass DATA.xlsx

SEM and other images may be found in the following file:

Summer Lake EPMA Images.zip

Additional geological field data and field photographs may be found in the StraboSpot repository.