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. 2021 Mar 19;12:1754. doi: 10.1038/s41467-021-21762-8

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© The Author(s) 2021

Open Access This 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 5 — a A filtered Bouguer gravity anomaly map of Mars overlaid on top of the Mars Orbiter Laser Altimeter (MOLA) elevation map shaded relief. A bandpass filter with a lower and upper limit of 10 and 90 was used to filter out gravity signatures associated with spherical harmonic degree less than 10 and higher than 90. The circles show impact craters on Mars with a diameter between 200 and 900 km. Impact craters with associated Bouguer anomaly are shown in black while white circles show impact craters with no prominent Bouguer anomaly. Note that the colormap is scaled such that smaller Bouguer anomalies (<50 mGal) are not displayed for clarity. The triangles show all identified volcanic structures on Mars. b Bouguer gravity anomaly map of Eridania and the surrounding region. The location of Eridania basins and nearby impact basins are annotated in the figure.