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. 2021 May 12;11:10149. doi: 10.1038/s41598-021-89497-6

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© The Author(s) 2021

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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(A) Physiographic regions of the conterminous United States²²; within each region, the boundaries of different provinces are highlighted by color shades. (B) Selected geological domains and tectonic lineaments. Transparent pink areas bounded by black dashed lines indicate sedimentary basins relevant to the discussion, i.e. Denver (Db), Greater Green River (GRb), Michigan (Mb), Powder River (PRb), San Juan (SJb), and Williston basin (Wb). The attenuation maps are presented with two different color scales: one for the period range 3–6 s, the other for periods $\geq 9 s$ .