The Lomonosov Crater Impact Event: A Possible Mega-Tsunami Source on Mars
©2019. American Geophysical Union. All Rights Reserved. Recent research suggests that major meteorite impact events into a Late Hesperian/Early Amazonian ocean likely produced a mega-tsunami that would have resurfaced coastal areas in northwestern Arabia Terra. The orientations of the associated lob...
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| Format: | Journal Article |
| Language: | English |
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AMER GEOPHYSICAL UNION
2019
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| Subjects: | |
| Online Access: | http://purl.org/au-research/grants/arc/FT170100024 http://hdl.handle.net/20.500.11937/76439 |
| _version_ | 1848763687431569408 |
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| author | Costard, F. Séjourné, A. Lagain, Anthony Ormö, J. Rodriguez, J.A.P. Clifford, S. Bouley, S. Kelfoun, K. Lavigne, F. |
| author_facet | Costard, F. Séjourné, A. Lagain, Anthony Ormö, J. Rodriguez, J.A.P. Clifford, S. Bouley, S. Kelfoun, K. Lavigne, F. |
| author_sort | Costard, F. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | ©2019. American Geophysical Union. All Rights Reserved. Recent research suggests that major meteorite impact events into a Late Hesperian/Early Amazonian ocean likely produced a mega-tsunami that would have resurfaced coastal areas in northwestern Arabia Terra. The orientations of the associated lobate deposits, a conspicuous type of landforms called Thumbprint Terrain, suggests that if an impact event triggered the mega-tsunami, the most likely location of the source crater is within the northern plains regions situated north of Arabia Terra. This study focuses on the identification of impact craters that impacted into the ocean and are likely to have produced the tsunami. We selected 10 complex impact craters, based on their diameters, location, and geomorphic characteristics. Of those, the Late Hesperian ~120-km-diameter Lomonosov crater exhibits a unique topographic plan view asymmetry (compared to other similar-sized and similar-aged craters in the northern plains such as Micoud, Korolev, and Milankovic). We attribute its broad and shallow rim, in part, to an impact into a shallow ocean as well as its subsequent erosion from the collapsing transient water cavity. The likely marine formation of the Lomonosov crater, and the apparent agreement in its age with that of the Thumbprint Terrain unit (~3 Ga), strongly suggests that it was the source crater of the tsunami. These results have implications for the stability of a late northern ocean on Mars. |
| first_indexed | 2025-11-14T11:07:25Z |
| format | Journal Article |
| id | curtin-20.500.11937-76439 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:07:25Z |
| publishDate | 2019 |
| publisher | AMER GEOPHYSICAL UNION |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-764392022-11-23T03:58:39Z The Lomonosov Crater Impact Event: A Possible Mega-Tsunami Source on Mars Costard, F. Séjourné, A. Lagain, Anthony Ormö, J. Rodriguez, J.A.P. Clifford, S. Bouley, S. Kelfoun, K. Lavigne, F. Science & Technology Physical Sciences Geochemistry & Geophysics tsunami Mars Lomonosov crater northern ocean CRETACEOUS-TERTIARY BOUNDARY CHESAPEAKE BAY IMPACT NORTHERN LOWLANDS TARGET CRATERS LOCKNE CLIMATE OCEANS MORPHOLOGY EVOLUTION SHORELINE ©2019. American Geophysical Union. All Rights Reserved. Recent research suggests that major meteorite impact events into a Late Hesperian/Early Amazonian ocean likely produced a mega-tsunami that would have resurfaced coastal areas in northwestern Arabia Terra. The orientations of the associated lobate deposits, a conspicuous type of landforms called Thumbprint Terrain, suggests that if an impact event triggered the mega-tsunami, the most likely location of the source crater is within the northern plains regions situated north of Arabia Terra. This study focuses on the identification of impact craters that impacted into the ocean and are likely to have produced the tsunami. We selected 10 complex impact craters, based on their diameters, location, and geomorphic characteristics. Of those, the Late Hesperian ~120-km-diameter Lomonosov crater exhibits a unique topographic plan view asymmetry (compared to other similar-sized and similar-aged craters in the northern plains such as Micoud, Korolev, and Milankovic). We attribute its broad and shallow rim, in part, to an impact into a shallow ocean as well as its subsequent erosion from the collapsing transient water cavity. The likely marine formation of the Lomonosov crater, and the apparent agreement in its age with that of the Thumbprint Terrain unit (~3 Ga), strongly suggests that it was the source crater of the tsunami. These results have implications for the stability of a late northern ocean on Mars. 2019 Journal Article http://hdl.handle.net/20.500.11937/76439 10.1029/2019JE006008 English http://purl.org/au-research/grants/arc/FT170100024 AMER GEOPHYSICAL UNION fulltext |
| spellingShingle | Science & Technology Physical Sciences Geochemistry & Geophysics tsunami Mars Lomonosov crater northern ocean CRETACEOUS-TERTIARY BOUNDARY CHESAPEAKE BAY IMPACT NORTHERN LOWLANDS TARGET CRATERS LOCKNE CLIMATE OCEANS MORPHOLOGY EVOLUTION SHORELINE Costard, F. Séjourné, A. Lagain, Anthony Ormö, J. Rodriguez, J.A.P. Clifford, S. Bouley, S. Kelfoun, K. Lavigne, F. The Lomonosov Crater Impact Event: A Possible Mega-Tsunami Source on Mars |
| title | The Lomonosov Crater Impact Event: A Possible Mega-Tsunami Source on Mars |
| title_full | The Lomonosov Crater Impact Event: A Possible Mega-Tsunami Source on Mars |
| title_fullStr | The Lomonosov Crater Impact Event: A Possible Mega-Tsunami Source on Mars |
| title_full_unstemmed | The Lomonosov Crater Impact Event: A Possible Mega-Tsunami Source on Mars |
| title_short | The Lomonosov Crater Impact Event: A Possible Mega-Tsunami Source on Mars |
| title_sort | lomonosov crater impact event: a possible mega-tsunami source on mars |
| topic | Science & Technology Physical Sciences Geochemistry & Geophysics tsunami Mars Lomonosov crater northern ocean CRETACEOUS-TERTIARY BOUNDARY CHESAPEAKE BAY IMPACT NORTHERN LOWLANDS TARGET CRATERS LOCKNE CLIMATE OCEANS MORPHOLOGY EVOLUTION SHORELINE |
| url | http://purl.org/au-research/grants/arc/FT170100024 http://hdl.handle.net/20.500.11937/76439 |