Revealing the Cape Verde Hotspot Track Across the Great Lakes
Abstract Detecting old hotspot tracks in a stable continent remains challenging because of the lack of volcano chains on the surface and the fade of thermal anomalies with time. The northeastern American continent moved over the Cape Verde and the Great Meteor hotspots during 300–100 Ma. However, on...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2025-01-01
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| Series: | Geophysical Research Letters |
| Online Access: | https://doi.org/10.1029/2024GL110777 |
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| _version_ | 1832593485932265472 |
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| author | Zhongmin Tao Aibing Li Jonny Wu Karen M. Fischer |
| author_facet | Zhongmin Tao Aibing Li Jonny Wu Karen M. Fischer |
| author_sort | Zhongmin Tao |
| collection | DOAJ |
| description | Abstract Detecting old hotspot tracks in a stable continent remains challenging because of the lack of volcano chains on the surface and the fade of thermal anomalies with time. The northeastern American continent moved over the Cape Verde and the Great Meteor hotspots during 300–100 Ma. However, only the latter was confirmed by kimberlites and seismic velocity models. Our new 3D anisotropic model in northeastern America reveals strong positive radial anisotropy anomalies in the eastern Great Lakes, central Pennsylvania, and northwestern Virginia. These anomalies follow the Cape Verde hotspot track, providing the first geophysical evidence for the hotspot. A circular pattern of azimuthal anisotropy is also observed in the eastern Great Lakes and may be related to the Cape Verde plume activity. The plume was under the Great Lakes during 300–200 Ma and probably caused lithosphere thinning and low topography needed for forming the Lakes during the glacial era. |
| format | Article |
| id | doaj-art-8df57fec2e3045e69c99aa695a3e5755 |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-8df57fec2e3045e69c99aa695a3e57552025-01-20T13:05:57ZengWileyGeophysical Research Letters0094-82761944-80072025-01-01521n/an/a10.1029/2024GL110777Revealing the Cape Verde Hotspot Track Across the Great LakesZhongmin Tao0Aibing Li1Jonny Wu2Karen M. Fischer3Department of Earth and Atmospheric Sciences University of Houston Houston TX USADepartment of Earth and Atmospheric Sciences University of Houston Houston TX USADepartment of Earth and Atmospheric Sciences University of Houston Houston TX USADepartment of Earth, Environmental, and Planetary Sciences Brown University Providence RI USAAbstract Detecting old hotspot tracks in a stable continent remains challenging because of the lack of volcano chains on the surface and the fade of thermal anomalies with time. The northeastern American continent moved over the Cape Verde and the Great Meteor hotspots during 300–100 Ma. However, only the latter was confirmed by kimberlites and seismic velocity models. Our new 3D anisotropic model in northeastern America reveals strong positive radial anisotropy anomalies in the eastern Great Lakes, central Pennsylvania, and northwestern Virginia. These anomalies follow the Cape Verde hotspot track, providing the first geophysical evidence for the hotspot. A circular pattern of azimuthal anisotropy is also observed in the eastern Great Lakes and may be related to the Cape Verde plume activity. The plume was under the Great Lakes during 300–200 Ma and probably caused lithosphere thinning and low topography needed for forming the Lakes during the glacial era.https://doi.org/10.1029/2024GL110777 |
| spellingShingle | Zhongmin Tao Aibing Li Jonny Wu Karen M. Fischer Revealing the Cape Verde Hotspot Track Across the Great Lakes Geophysical Research Letters |
| title | Revealing the Cape Verde Hotspot Track Across the Great Lakes |
| title_full | Revealing the Cape Verde Hotspot Track Across the Great Lakes |
| title_fullStr | Revealing the Cape Verde Hotspot Track Across the Great Lakes |
| title_full_unstemmed | Revealing the Cape Verde Hotspot Track Across the Great Lakes |
| title_short | Revealing the Cape Verde Hotspot Track Across the Great Lakes |
| title_sort | revealing the cape verde hotspot track across the great lakes |
| url | https://doi.org/10.1029/2024GL110777 |
| work_keys_str_mv | AT zhongmintao revealingthecapeverdehotspottrackacrossthegreatlakes AT aibingli revealingthecapeverdehotspottrackacrossthegreatlakes AT jonnywu revealingthecapeverdehotspottrackacrossthegreatlakes AT karenmfischer revealingthecapeverdehotspottrackacrossthegreatlakes |