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A Lithostratigraphic Analysis of the Meteor Crater Ejecta Blanket: Measurements, Assigned Units, and Unit Thickness

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Publication Date
Start Date
2015-10-01
End Date
2022-04-13

Citation

Gullikson, A.L., Gaither, T.A., Hagerty, J.J., and Villarreal, K.A., 2022, A Lithostratigraphic Analysis of the Meteor Crater Ejecta Blanket: Measurements, Assigned Units, and Unit Thickness: U.S. Geological Survey data release, https://doi.org/10.5066/P9J0PUPY.

Summary

Current models do not sufficiently explain target rock-projectile mixing and ejecta blanket formation for small impact craters (i.e., <2km diameter). For example, due to the size of Meteor Crater and the low-velocity at which materials were excavated from the transient crater, the extent of target rock-projectile mixing is expected to be minor. However, based on drilling notes from Dr. David Roddy and preliminary work done at the USGS, we found lithologic mixing is much more prevalent throughout the ejecta blanket. We have used the USGS Meteor Crater sample collection to investigate the internal stratigraphy and spatial distribution of impact-generated materials in the ejecta blanket to better understand cratering processes involving [...]

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Lithostratigraphic_analysis_measurements.csv 98.89 KB text/csv
Lithostratigraphic_analysis_summary.csv 23.94 KB text/csv
figure1_v3.jpg thumbnail 273.95 KB image/jpeg

Purpose

These data were used in assigning ejecta units to the Meteor Crater ejecta blanket. These data can be used as a reference to the detailed lithic composition and physical characteristics for each drill hole and depth that were analyzed.
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  • USGS Data Release Products

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DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9J0PUPY

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