Seismic transect across the Lomonosov and Mendeleev Ridges: Constraints on the geological evolution of the Amerasia Basin, Arctic Ocean
We report on seismic and petrological data that provide new constraints on the geological evolution of the Amerasia Basin. A seismic reflection transect across the Makarov Basin, located between the Mendeleev and Lomonosov Ridges, shows a complete undisturbed sedimentary section of Mesozoic/Cenozoic...
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Veröffentlicht in: | Geophysical research letters 2013-10, Vol.40 (19), p.5047-5051 |
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description | We report on seismic and petrological data that provide new constraints on the geological evolution of the Amerasia Basin. A seismic reflection transect across the Makarov Basin, located between the Mendeleev and Lomonosov Ridges, shows a complete undisturbed sedimentary section of Mesozoic/Cenozoic age. In contrast to the Mendeleev Ridge, the margin of the Lomonosov Ridge is wide and shows horst and graben structures. We suggest that the Mendeleev Ridge is most likely volcanic in origin and support this finding with a 40Ar/39Ar isotopic age for a tholeiitic basalt sampled from the central Alpha/Mendeleev Ridge. Seismic reflection data for the Makarov Basin show no evidence of compressional features, consistent with the Lomonosov Ridge moving as a microplate in the Cenozoic. We propose that the Amerasia Basin moved as a single tectonic plate during the opening of the Eurasia Basin.
Key Points
Upper age constraints for the formation of the Mendeleev Ridge
Lomonosov Ridge and Mendeleev Ridge are not conjugate margins
Amerasia Basin moved as a single plate for most of Cenozoic |
doi_str_mv | 10.1002/grl.50975 |
format | Article |
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Key Points
Upper age constraints for the formation of the Mendeleev Ridge
Lomonosov Ridge and Mendeleev Ridge are not conjugate margins
Amerasia Basin moved as a single plate for most of Cenozoic</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1002/grl.50975</identifier><language>eng</language><publisher>Washington: Blackwell Publishing Ltd</publisher><subject>Arctic ; Basalt ; Basins ; Cenozoic ; Evolution ; Makarov Basin ; Mesozoic ; Oceanography ; Ridges ; seismic ; Seismology</subject><ispartof>Geophysical research letters, 2013-10, Vol.40 (19), p.5047-5051</ispartof><rights>2013. American Geophysical Union. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3705-3ba96815bcc58ef338bf87f40d0d485a8a8820a8d00e157ba79b72a2c326fb423</citedby><cites>FETCH-LOGICAL-c3705-3ba96815bcc58ef338bf87f40d0d485a8a8820a8d00e157ba79b72a2c326fb423</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fgrl.50975$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fgrl.50975$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,778,782,1414,1430,11497,27907,27908,45557,45558,46392,46451,46816,46875</link.rule.ids></links><search><creatorcontrib>Jokat, Wilfried</creatorcontrib><creatorcontrib>Ickrath, Michele</creatorcontrib><creatorcontrib>O'Connor, John</creatorcontrib><title>Seismic transect across the Lomonosov and Mendeleev Ridges: Constraints on the geological evolution of the Amerasia Basin, Arctic Ocean</title><title>Geophysical research letters</title><addtitle>Geophys. Res. Lett</addtitle><description>We report on seismic and petrological data that provide new constraints on the geological evolution of the Amerasia Basin. A seismic reflection transect across the Makarov Basin, located between the Mendeleev and Lomonosov Ridges, shows a complete undisturbed sedimentary section of Mesozoic/Cenozoic age. In contrast to the Mendeleev Ridge, the margin of the Lomonosov Ridge is wide and shows horst and graben structures. We suggest that the Mendeleev Ridge is most likely volcanic in origin and support this finding with a 40Ar/39Ar isotopic age for a tholeiitic basalt sampled from the central Alpha/Mendeleev Ridge. Seismic reflection data for the Makarov Basin show no evidence of compressional features, consistent with the Lomonosov Ridge moving as a microplate in the Cenozoic. We propose that the Amerasia Basin moved as a single tectonic plate during the opening of the Eurasia Basin.
Key Points
Upper age constraints for the formation of the Mendeleev Ridge
Lomonosov Ridge and Mendeleev Ridge are not conjugate margins
Amerasia Basin moved as a single plate for most of Cenozoic</description><subject>Arctic</subject><subject>Basalt</subject><subject>Basins</subject><subject>Cenozoic</subject><subject>Evolution</subject><subject>Makarov Basin</subject><subject>Mesozoic</subject><subject>Oceanography</subject><subject>Ridges</subject><subject>seismic</subject><subject>Seismology</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNp1kMFOGzEQhq2qSKTAgTewxKlSF8br3bW3tzSCtFIgUkLVo-X1zqaGjQ32JpQn4LVrEtobl5mR5vtmpJ-QUwbnDCC_WIX-vIRalB_IiNVFkUkA8ZGMAOo056I6JJ9ivAMADpyNyMsSbVxbQ4egXUQzUG2Cj5EOv5HO_No7H_2WatfSa3Qt9ohburDtCuNXOvEuJs-6IVLvdsoKfe9X1uie4tb3m8Gmhe92u_Eag45W02-pui90HMyQPs8NandMDjrdRzx560fk59Xl7eR7NptPf0zGs8xwAWXGG11XkpWNMaXEjnPZdFJ0BbTQFrLUUkuZg5YtALJSNFrUjch1bnhedU2R8yNytr_7EPzjBuOg7vwmuPRSsarIoWAcXqnPe2qXRcBOPQS71uFZMVCvOauUs9rlnNiLPftke3x-H1TTxeyfke0NGwf889_Q4V5Vgify181UiVsO5aJYqgX_CzhZjzk</recordid><startdate>20131016</startdate><enddate>20131016</enddate><creator>Jokat, Wilfried</creator><creator>Ickrath, Michele</creator><creator>O'Connor, John</creator><general>Blackwell Publishing Ltd</general><general>John Wiley & Sons, Inc</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>7TN</scope><scope>8FD</scope><scope>F1W</scope><scope>FR3</scope><scope>H8D</scope><scope>H96</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>L7M</scope></search><sort><creationdate>20131016</creationdate><title>Seismic transect across the Lomonosov and Mendeleev Ridges: Constraints on the geological evolution of the Amerasia Basin, Arctic Ocean</title><author>Jokat, Wilfried ; Ickrath, Michele ; O'Connor, John</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3705-3ba96815bcc58ef338bf87f40d0d485a8a8820a8d00e157ba79b72a2c326fb423</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Arctic</topic><topic>Basalt</topic><topic>Basins</topic><topic>Cenozoic</topic><topic>Evolution</topic><topic>Makarov Basin</topic><topic>Mesozoic</topic><topic>Oceanography</topic><topic>Ridges</topic><topic>seismic</topic><topic>Seismology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Jokat, Wilfried</creatorcontrib><creatorcontrib>Ickrath, Michele</creatorcontrib><creatorcontrib>O'Connor, John</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Technology Research Database</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Jokat, Wilfried</au><au>Ickrath, Michele</au><au>O'Connor, John</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Seismic transect across the Lomonosov and Mendeleev Ridges: Constraints on the geological evolution of the Amerasia Basin, Arctic Ocean</atitle><jtitle>Geophysical research letters</jtitle><addtitle>Geophys. Res. Lett</addtitle><date>2013-10-16</date><risdate>2013</risdate><volume>40</volume><issue>19</issue><spage>5047</spage><epage>5051</epage><pages>5047-5051</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><abstract>We report on seismic and petrological data that provide new constraints on the geological evolution of the Amerasia Basin. A seismic reflection transect across the Makarov Basin, located between the Mendeleev and Lomonosov Ridges, shows a complete undisturbed sedimentary section of Mesozoic/Cenozoic age. In contrast to the Mendeleev Ridge, the margin of the Lomonosov Ridge is wide and shows horst and graben structures. We suggest that the Mendeleev Ridge is most likely volcanic in origin and support this finding with a 40Ar/39Ar isotopic age for a tholeiitic basalt sampled from the central Alpha/Mendeleev Ridge. Seismic reflection data for the Makarov Basin show no evidence of compressional features, consistent with the Lomonosov Ridge moving as a microplate in the Cenozoic. We propose that the Amerasia Basin moved as a single tectonic plate during the opening of the Eurasia Basin.
Key Points
Upper age constraints for the formation of the Mendeleev Ridge
Lomonosov Ridge and Mendeleev Ridge are not conjugate margins
Amerasia Basin moved as a single plate for most of Cenozoic</abstract><cop>Washington</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1002/grl.50975</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record> |
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source | Wiley Online Library Journals Frontfile Complete; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Wiley Free Content; Wiley-Blackwell AGU Digital Library |
subjects | Arctic Basalt Basins Cenozoic Evolution Makarov Basin Mesozoic Oceanography Ridges seismic Seismology |
title | Seismic transect across the Lomonosov and Mendeleev Ridges: Constraints on the geological evolution of the Amerasia Basin, Arctic Ocean |
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