Made using USGS data, with Natural Earth and Esri base-maps (both released under CC0 or licensed for screen-capture output by Esri-licence owners using Esri products, as per https://downloads2.esri.com/arcgisonline/docs/tou_summary.pdf). Created with QGIS and ArcGIS Online.
https://doi.org/10.3133%2Fofr97470L
USGS