#seismicvelocitymodel - Veganism Social

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Greg Cocks @GregCocks@techhub.social

How Did The Great Lakes Form? Scientists Think They Figured It Out
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https://www.earth.com/news/how-did-the-great-lakes-form-surprising-new-clues-have-emerged/#google_vignette <-- shared technical link
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https://doi.org/10.1029/2024GL110777 <-- shared paper
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#geology #mapping #structuralgeology #USA #Canada #GreatLakes #NorthAmerica #CapeVerde #hotspot #tectonics #magma #Superior #Michigan #Huron #Erie #Ontario #freshwater #lake #mantle #formation #pangaea #supercontinent #remotesensing #geophysics #continent #kimberlites #seismicvelocitymodel #model #modeling #plume #lithosphere #glacial #glacier #anisotropy

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Map of northeastern America with tectonic features and seismic stations. The green rectangle marks the study region, and black triangles are the TA stations used in this study. Yellow diamonds are kimberlite locations. Red triangles represent the New England seamounts (NES), Cretaceous plutons in the White Mountains (WM) in New Hampshire and Monteregian Hills (MH) in Quebec, and Eocene volcanoes in northwestern Virginia. Blue curves indicate the Appalachian front and the Grenville front. The white dashed line shows the GM hotspot track. The Midcontinent Rift (MCR) and the Ottawa-Bonnechere Graben (OBG) are outlined in orange. The inset shows the current locations of the GM and CV hotspots in the Atlantic Ocean.

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Maps of Vsv, radial anisotropy, and azimuthal anisotropy at selected depths. (a–c) Maps of shear wave velocity superimposed by azimuthal anisotropy (black bars). (d–f) Maps of radial anisotropy superimposed by azimuthal anisotropy. The bar length is proportional to the strength of azimuthal anisotropy; the bar orientation is the fast propagation direction of the S wave. White diamonds are the kimberlite locations. Red lines mark the locations of the vertical profiles AA’ and BB’ shown in Figure 3. The dashed white circle marks the area of circular azimuthal anisotropy. A1–A4 mark positive radial anisotropy regions.

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satellite image - Great Lakes

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